diff --git a/README.md b/README.md
index 52dbc784e..df89fcade 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,6 @@ IrisAccess access=IrisToolbelt.createWorld() // If you like builders...
   .name("myWorld") // The world name
   .dimension("terrifyinghands")
   .seed(69133742) // The world seed
-  .headless(true)  // Headless make gen go fast
   .pregen(PregenTask // Define a pregen job to run
   .builder()
     .center(new Position2(0,0)) // REGION coords (1 region = 32x32 chunks)
diff --git a/build.gradle b/build.gradle
index b138ddbbc..c3b4969cd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -25,7 +25,7 @@ plugins {
     id "de.undercouch.download" version "5.0.1"
 }
 
-version '3.2.4-1.19.2-1.20.4'
+version '3.2.6-1.19.2-1.20.4'
 def specialSourceVersion = '1.11.0' //[NMS]
 
 // ADD YOURSELF AS A NEW LINE IF YOU WANT YOUR OWN BUILD TASK GENERATED
diff --git a/core/src/main/java/com/volmit/iris/Iris.java b/core/src/main/java/com/volmit/iris/Iris.java
index dbe796d4f..f916d9501 100644
--- a/core/src/main/java/com/volmit/iris/Iris.java
+++ b/core/src/main/java/com/volmit/iris/Iris.java
@@ -728,6 +728,11 @@ public class Iris extends VolmitPlugin implements Listener {
                 Iris.info("Resolved missing dimension, proceeding with generation.");
             }
         }
+        File packFolder = new File(Bukkit.getWorldContainer(), worldName + "/iris/pack");
+        if (packFolder.exists()) {
+            IrisDimension worldDim = IrisData.get(packFolder).getDimensionLoader().load(id);
+            if (worldDim != null) dim = worldDim;
+        }
 
         Iris.debug("Assuming IrisDimension: " + dim.getName());
 
@@ -747,6 +752,9 @@ public class Iris extends VolmitPlugin implements Listener {
             ff.mkdirs();
             service(StudioSVC.class).installIntoWorld(getSender(), dim.getLoadKey(), w.worldFolder());
         }
+        if (!INMS.get().registerDimension(worldName, dim)) {
+            throw new IllegalStateException("Unable to register dimension " + dim.getName());
+        }
 
         return new BukkitChunkGenerator(w, false, ff, dim.getLoadKey(), false);
     }
diff --git a/core/src/main/java/com/volmit/iris/core/ServerConfigurator.java b/core/src/main/java/com/volmit/iris/core/ServerConfigurator.java
index b4744cc20..f3dafea22 100644
--- a/core/src/main/java/com/volmit/iris/core/ServerConfigurator.java
+++ b/core/src/main/java/com/volmit/iris/core/ServerConfigurator.java
@@ -135,30 +135,6 @@ public class ServerConfigurator {
     public static void installDataPacks(boolean fullInstall) {
         Iris.info("Checking Data Packs...");
         File packs = new File("plugins/Iris/packs");
-        double ultimateMaxHeight = 0;
-        double ultimateMinHeight = 0;
-        if (packs.exists() && packs.isDirectory()) {
-            for (File pack : packs.listFiles()) {
-                IrisData data = IrisData.get(pack);
-                if (pack.isDirectory()) {
-                    File dimensionsFolder = new File(pack, "dimensions");
-                    if (dimensionsFolder.exists() && dimensionsFolder.isDirectory()) {
-                        for (File file : dimensionsFolder.listFiles()) {
-                            if (file.isFile() && file.getName().endsWith(".json")) {
-                                IrisDimension dim = data.getDimensionLoader().load(file.getName().split("\\Q.\\E")[0]);
-                                if (ultimateMaxHeight < dim.getDimensionHeight().getMax()) {
-                                    ultimateMaxHeight = dim.getDimensionHeight().getMax();
-                                }
-                                if (ultimateMinHeight > dim.getDimensionHeight().getMin()) {
-                                    ultimateMinHeight = dim.getDimensionHeight().getMin();
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-        }
-
         if (packs.exists()) {
             for (File i : packs.listFiles()) {
                 if (i.isDirectory()) {
@@ -177,7 +153,7 @@ public class ServerConfigurator {
 
                                 Iris.verbose("  Checking Dimension " + dim.getLoadFile().getPath());
                                 for (File dpack : getDatapacksFolder()) {
-                                    dim.installDataPack(() -> data, dpack, ultimateMaxHeight, ultimateMinHeight);
+                                    dim.installDataPack(() -> data, dpack);
                                 }
                             }
                         }
@@ -228,7 +204,7 @@ public class ServerConfigurator {
             Iris.info( "Hotloading all Datapacks!");
             if (INMS.get().supportsDataPacks()) {
                 for (File folder : getDatapacksFolder()) {
-                    INMS.get().loadDatapack(folder);
+                    INMS.get().loadDatapack(folder, false);
                 }
                 Iris.info("Datapacks Hotloaded!");
                 Iris.info(C.YELLOW + "============================================================================");
diff --git a/core/src/main/java/com/volmit/iris/core/commands/CommandStudio.java b/core/src/main/java/com/volmit/iris/core/commands/CommandStudio.java
index 71e5b89dd..55ef323ab 100644
--- a/core/src/main/java/com/volmit/iris/core/commands/CommandStudio.java
+++ b/core/src/main/java/com/volmit/iris/core/commands/CommandStudio.java
@@ -20,9 +20,11 @@ package com.volmit.iris.core.commands;
 
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.IrisSettings;
+import com.volmit.iris.core.ServerConfigurator;
 import com.volmit.iris.core.gui.NoiseExplorerGUI;
 import com.volmit.iris.core.gui.VisionGUI;
 import com.volmit.iris.core.loader.IrisData;
+import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.core.project.IrisProject;
 import com.volmit.iris.core.service.ConversionSVC;
 import com.volmit.iris.core.service.StudioSVC;
@@ -279,13 +281,23 @@ public class CommandStudio implements DecreeExecutor {
     }
 
     @Decree(description = "Hotload a studio", aliases = {"reload", "h"})
-    public void hotload() {
+    public void hotload(@Param(defaultValue = "false") boolean reloadDataPack) {
         if (!Iris.service(StudioSVC.class).isProjectOpen()) {
             sender().sendMessage(C.RED + "No studio world open!");
             return;
         }
-        Iris.service(StudioSVC.class).getActiveProject().getActiveProvider().getEngine().hotload();
+        var provider = Iris.service(StudioSVC.class).getActiveProject().getActiveProvider();
+        provider.getEngine().hotload();
         sender().sendMessage(C.GREEN + "Hotloaded");
+        if (reloadDataPack) {
+            var world = provider.getTarget().getWorld().realWorld();
+            if (world == null) {
+                sender().sendMessage(C.RED + "Failed to reload datapacks.");
+                return;
+            }
+            boolean success = INMS.get().loadDatapack(new File(world.getWorldFolder(), "datapacks"), true);
+            sender().sendMessage(success ? C.GREEN + "Reloaded datapacks." : C.RED + "Failed to reload datapacks.");
+        }
     }
 
     @Decree(description = "Show loot if a chest were right here", origin = DecreeOrigin.PLAYER, sync = true)
diff --git a/core/src/main/java/com/volmit/iris/core/nms/INMSBinding.java b/core/src/main/java/com/volmit/iris/core/nms/INMSBinding.java
index 53c71a833..48637dc16 100644
--- a/core/src/main/java/com/volmit/iris/core/nms/INMSBinding.java
+++ b/core/src/main/java/com/volmit/iris/core/nms/INMSBinding.java
@@ -19,6 +19,7 @@
 package com.volmit.iris.core.nms;
 
 import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.mantle.Mantle;
@@ -113,7 +114,9 @@ public interface INMSBinding {
     
     Entity spawnEntity(Location location, EntityType type, CreatureSpawnEvent.SpawnReason reason);
 
-    boolean loadDatapack(File datapackFolder);
+    boolean loadDatapack(File datapackFolder, boolean replace);
+
+    boolean registerDimension(String name, IrisDimension dimension);
 
     void injectBukkit();
 }
diff --git a/core/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java b/core/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java
index 77e8e18de..42a5e2507 100644
--- a/core/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java
+++ b/core/src/main/java/com/volmit/iris/core/nms/v1X/NMSBinding1X.java
@@ -23,6 +23,7 @@ import com.volmit.iris.Iris;
 import com.volmit.iris.core.nms.INMSBinding;
 import com.volmit.iris.core.nms.container.BlockPos;
 import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.format.C;
@@ -107,7 +108,12 @@ public class NMSBinding1X implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File datapackFolder) {
+    public boolean loadDatapack(File datapackFolder, boolean replace) {
+        return false;
+    }
+
+    @Override
+    public boolean registerDimension(String name, IrisDimension dimension) {
         return false;
     }
 
diff --git a/core/src/main/java/com/volmit/iris/core/tools/IrisWorldCreator.java b/core/src/main/java/com/volmit/iris/core/tools/IrisWorldCreator.java
index b815d3809..36aa52789 100644
--- a/core/src/main/java/com/volmit/iris/core/tools/IrisWorldCreator.java
+++ b/core/src/main/java/com/volmit/iris/core/tools/IrisWorldCreator.java
@@ -19,6 +19,7 @@
 package com.volmit.iris.core.tools;
 
 import com.volmit.iris.core.loader.IrisData;
+import com.volmit.iris.core.nms.INMS;
 import com.volmit.iris.engine.object.*;
 import com.volmit.iris.engine.platform.BukkitChunkGenerator;
 import org.bukkit.Bukkit;
@@ -84,6 +85,9 @@ public class IrisWorldCreator {
                 ? dim.getLoader().getDataFolder() :
                 new File(w.worldFolder(), "iris/pack"), dimensionName, smartVanillaHeight);
 
+        if (!INMS.get().registerDimension(name, dim)) {
+            throw new IllegalStateException("Unable to register dimension " + dim.getName());
+        }
 
         return new WorldCreator(name)
                 .environment(findEnvironment())
diff --git a/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java b/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java
index aee21600b..fedf5cf0e 100644
--- a/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java
+++ b/core/src/main/java/com/volmit/iris/engine/object/IrisDimension.java
@@ -1,584 +1,447 @@
-/*
- * Iris is a World Generator for Minecraft Bukkit Servers
- * Copyright (c) 2022 Arcane Arts (Volmit Software)
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-package com.volmit.iris.engine.object;
-
-import com.volmit.iris.Iris;
-import com.volmit.iris.core.IrisSettings;
-import com.volmit.iris.core.loader.IrisData;
-import com.volmit.iris.core.loader.IrisRegistrant;
-import com.volmit.iris.engine.data.cache.AtomicCache;
-import com.volmit.iris.engine.framework.Engine;
-import com.volmit.iris.engine.object.annotations.*;
-import com.volmit.iris.util.collection.KList;
-import com.volmit.iris.util.data.DataProvider;
-import com.volmit.iris.util.data.Dimension;
-import com.volmit.iris.util.io.IO;
-import com.volmit.iris.util.json.JSONObject;
-import com.volmit.iris.util.math.Position2;
-import com.volmit.iris.util.math.RNG;
-import com.volmit.iris.util.noise.CNG;
-import com.volmit.iris.util.plugin.VolmitSender;
-import lombok.AllArgsConstructor;
-import lombok.Data;
-import lombok.EqualsAndHashCode;
-import lombok.NoArgsConstructor;
-import lombok.experimental.Accessors;
-import org.bukkit.Material;
-import org.bukkit.World.Environment;
-import org.bukkit.block.data.BlockData;
-
-import java.io.DataInput;
-import java.io.File;
-import java.io.IOException;
-
-@Accessors(chain = true)
-@AllArgsConstructor
-@NoArgsConstructor
-@Desc("Represents a dimension")
-@Data
-@EqualsAndHashCode(callSuper = false)
-public class IrisDimension extends IrisRegistrant {
-    public static final BlockData STONE = Material.STONE.createBlockData();
-    public static final BlockData WATER = Material.WATER.createBlockData();
-    private static final String DP_OVERWORLD_DEFAULT = """
-            {
-              "ambient_light": 0.0,
-              "bed_works": true,
-              "coordinate_scale": 1.0,
-              "effects": "minecraft:overworld",
-              "has_ceiling": false,
-              "has_raids": true,
-              "has_skylight": true,
-              "infiniburn": "#minecraft:infiniburn_overworld",
-              "monster_spawn_block_light_limit": 0,
-              "monster_spawn_light_level": {
-                "type": "minecraft:uniform",
-                "value": {
-                  "max_inclusive": 7,
-                  "min_inclusive": 0
-                }
-              },
-              "natural": true,
-              "piglin_safe": false,
-              "respawn_anchor_works": false,
-              "ultrawarm": false
-            }""";
-
-    private static final String DP_NETHER_DEFAULT = """
-            {
-              "ambient_light": 0.1,
-              "bed_works": false,
-              "coordinate_scale": 8.0,
-              "effects": "minecraft:the_nether",
-              "fixed_time": 18000,
-              "has_ceiling": true,
-              "has_raids": false,
-              "has_skylight": false,
-              "infiniburn": "#minecraft:infiniburn_nether",
-              "monster_spawn_block_light_limit": 15,
-              "monster_spawn_light_level": 7,
-              "natural": false,
-              "piglin_safe": true,
-              "respawn_anchor_works": true,
-              "ultrawarm": true
-            }""";
-
-    private static final String DP_END_DEFAULT = """
-            {
-              "ambient_light": 0.0,
-              "bed_works": false,
-              "coordinate_scale": 1.0,
-              "effects": "minecraft:the_end",
-              "fixed_time": 6000,
-              "has_ceiling": false,
-              "has_raids": true,
-              "has_skylight": false,
-              "infiniburn": "#minecraft:infiniburn_end",
-              "monster_spawn_block_light_limit": 0,
-              "monster_spawn_light_level": {
-                "type": "minecraft:uniform",
-                "value": {
-                  "max_inclusive": 7,
-                  "min_inclusive": 0
-                }
-              },
-              "natural": false,
-              "piglin_safe": false,
-              "respawn_anchor_works": false,
-              "ultrawarm": false
-            }""";
-    private final transient AtomicCache<Position2> parallaxSize = new AtomicCache<>();
-    private final transient AtomicCache<CNG> rockLayerGenerator = new AtomicCache<>();
-    private final transient AtomicCache<CNG> fluidLayerGenerator = new AtomicCache<>();
-    private final transient AtomicCache<CNG> coordFracture = new AtomicCache<>();
-    private final transient AtomicCache<Double> sinr = new AtomicCache<>();
-    private final transient AtomicCache<Double> cosr = new AtomicCache<>();
-    private final transient AtomicCache<Double> rad = new AtomicCache<>();
-    private final transient AtomicCache<Boolean> featuresUsed = new AtomicCache<>();
-    private final transient AtomicCache<KList<Position2>> strongholdsCache = new AtomicCache<>();
-    @MinNumber(2)
-    @Required
-    @Desc("The human readable name of this dimension")
-    private String name = "A Dimension";
-    @MinNumber(1)
-    @MaxNumber(2032)
-    @Desc("Maximum height at which players can be teleported to through gameplay.")
-    private int logicalHeight = 256;
-    @Desc("Maximum height at which players can be teleported to through gameplay.")
-    private int logicalHeightEnd = 256;
-    @Desc("Maximum height at which players can be teleported to through gameplay.")
-    private int logicalHeightNether = 256;
-    @RegistryListResource(IrisJigsawStructure.class)
-    @Desc("If defined, Iris will place the given jigsaw structure where minecraft should place the overworld stronghold.")
-    private String stronghold;
-    @Desc("If set to true, Iris will remove chunks to allow visualizing cross sections of chunks easily")
-    private boolean debugChunkCrossSections = false;
-    @Desc("Vertically split up the biome palettes with 3 air blocks in between to visualize them")
-    private boolean explodeBiomePalettes = false;
-    @Desc("Studio Mode for testing different parts of the world")
-    private StudioMode studioMode = StudioMode.NORMAL;
-    @MinNumber(1)
-    @MaxNumber(16)
-    @Desc("Customize the palette height explosion")
-    private int explodeBiomePaletteSize = 3;
-    @MinNumber(2)
-    @MaxNumber(16)
-    @Desc("Every X/Z % debugCrossSectionsMod == 0 cuts the chunk")
-    private int debugCrossSectionsMod = 3;
-    @Desc("The average distance between strongholds")
-    private int strongholdJumpDistance = 1280;
-    @Desc("Define the maximum strongholds to place")
-    private int maxStrongholds = 14;
-    @Desc("Tree growth override settings")
-    private IrisTreeSettings treeSettings = new IrisTreeSettings();
-    @Desc("Spawn Entities in this dimension over time. Iris will continually replenish these mobs just like vanilla does.")
-    @ArrayType(min = 1, type = String.class)
-    @RegistryListResource(IrisSpawner.class)
-    private KList<String> entitySpawners = new KList<>();
-    @Desc("Reference loot tables in this area")
-    private IrisLootReference loot = new IrisLootReference();
-    @MinNumber(0)
-    @Desc("The version of this dimension. Changing this will stop users from accidentally upgrading (and breaking their worlds).")
-    private int version = 1;
-    @ArrayType(min = 1, type = IrisBlockDrops.class)
-    @Desc("Define custom block drops for this dimension")
-    private KList<IrisBlockDrops> blockDrops = new KList<>();
-    @Desc("Should bedrock be generated or not.")
-    private boolean bedrock = true;
-    @MinNumber(0)
-    @MaxNumber(1)
-    @Desc("The land chance. Up to 1.0 for total land or 0.0 for total sea")
-    private double landChance = 0.625;
-    @Desc("The placement style of regions")
-    private IrisGeneratorStyle regionStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
-    @Desc("The placement style of land/sea")
-    private IrisGeneratorStyle continentalStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
-    @Desc("The placement style of biomes")
-    private IrisGeneratorStyle landBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
-    @Desc("The placement style of biomes")
-    private IrisGeneratorStyle shoreBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
-    @Desc("The placement style of biomes")
-    private IrisGeneratorStyle seaBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
-    @Desc("The placement style of biomes")
-    private IrisGeneratorStyle caveBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
-    @Desc("Instead of filling objects with air, fills them with cobweb so you can see them")
-    private boolean debugSmartBore = false;
-    @Desc("Generate decorations or not")
-    private boolean decorate = true;
-    @Desc("Use post processing or not")
-    private boolean postProcessing = true;
-    @Desc("Add slabs in post processing")
-    private boolean postProcessingSlabs = true;
-    @Desc("Add painted walls in post processing")
-    private boolean postProcessingWalls = true;
-    @Desc("Carving configuration for the dimension")
-    private IrisCarving carving = new IrisCarving();
-    @Desc("Configuration of fluid bodies such as rivers & lakes")
-    private IrisFluidBodies fluidBodies = new IrisFluidBodies();
-    @Desc("forceConvertTo320Height")
-    private Boolean forceConvertTo320Height = false;
-    @Desc("The world environment")
-    private Environment environment = Environment.NORMAL;
-    @RegistryListResource(IrisRegion.class)
-    @Required
-    @ArrayType(min = 1, type = String.class)
-    @Desc("Define all of the regions to include in this dimension. Dimensions -> Regions -> Biomes -> Objects etc")
-    private KList<String> regions = new KList<>();
-    @ArrayType(min = 1, type = IrisJigsawStructurePlacement.class)
-    @Desc("Jigsaw structures")
-    private KList<IrisJigsawStructurePlacement> jigsawStructures = new KList<>();
-    @Required
-    @MinNumber(0)
-    @MaxNumber(1024)
-    @Desc("The fluid height for this dimension")
-    private int fluidHeight = 63;
-    @Desc("Define the min and max Y bounds of this dimension. Please keep in mind that Iris internally generates from 0 to (max - min). \n\nFor example at -64 to 320, Iris is internally generating to 0 to 384, then on outputting chunks, it shifts it down by the min height (64 blocks). The default is -64 to 320. \n\nThe fluid height is placed at (fluid height + min height). So a fluid height of 63 would actually show up in the world at 1.")
-    private IrisRange dimensionHeight = new IrisRange(-64, 320);
-    @Desc("Define the min and max Y bounds of this dimension. Please keep in mind that Iris internally generates from 0 to (max - min). \n\nFor example at -64 to 320, Iris is internally generating to 0 to 384, then on outputting chunks, it shifts it down by the min height (64 blocks). The default is -64 to 320. \n\nThe fluid height is placed at (fluid height + min height). So a fluid height of 63 would actually show up in the world at 1.")
-    private IrisRange dimensionHeightEnd = new IrisRange(-64, 320);
-    @Desc("Define the min and max Y bounds of this dimension. Please keep in mind that Iris internally generates from 0 to (max - min). \n\nFor example at -64 to 320, Iris is internally generating to 0 to 384, then on outputting chunks, it shifts it down by the min height (64 blocks). The default is -64 to 320. \n\nThe fluid height is placed at (fluid height + min height). So a fluid height of 63 would actually show up in the world at 1.")
-    private IrisRange dimensionHeightNether = new IrisRange(-64, 320);
-    @Desc("Enable smart vanilla height")
-    private boolean smartVanillaHeight = false;
-    @RegistryListResource(IrisBiome.class)
-    @Desc("Keep this either undefined or empty. Setting any biome name into this will force iris to only generate the specified biome. Great for testing.")
-    private String focus = "";
-    @RegistryListResource(IrisRegion.class)
-    @Desc("Keep this either undefined or empty. Setting any region name into this will force iris to only generate the specified region. Great for testing.")
-    private String focusRegion = "";
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("Zoom in or out the biome size. Higher = bigger biomes")
-    private double biomeZoom = 5D;
-    @MinNumber(0)
-    @MaxNumber(360)
-    @Desc("You can rotate the input coordinates by an angle. This can make terrain appear more natural (less sharp corners and lines). This literally rotates the entire dimension by an angle. Hint: Try 12 degrees or something not on a 90 or 45 degree angle.")
-    private double dimensionAngleDeg = 0;
-    @Required
-    @Desc("Define the mode of this dimension (required!)")
-    private IrisDimensionMode mode = new IrisDimensionMode();
-    @MinNumber(0)
-    @MaxNumber(8192)
-    @Desc("Coordinate fracturing applies noise to the input coordinates. This creates the 'iris swirls' and wavy features. The distance pushes these waves further into places they shouldnt be. This is a block value multiplier.")
-    private double coordFractureDistance = 20;
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("Coordinate fracturing zoom. Higher = less frequent warping, Lower = more frequent and rapid warping / swirls.")
-    private double coordFractureZoom = 8;
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("This zooms in the land space")
-    private double landZoom = 1;
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("This zooms oceanic biomes")
-    private double seaZoom = 1;
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("Zoom in continents")
-    private double continentZoom = 1;
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("Change the size of regions")
-    private double regionZoom = 1;
-    @Desc("Disable this to stop placing objects, entities, features & updates")
-    private boolean useMantle = true;
-    @Desc("Prevent Leaf decay as if placed in creative mode")
-    private boolean preventLeafDecay = false;
-    @ArrayType(min = 1, type = IrisDepositGenerator.class)
-    @Desc("Define global deposit generators")
-    private KList<IrisDepositGenerator> deposits = new KList<>();
-    @ArrayType(min = 1, type = IrisShapedGeneratorStyle.class)
-    @Desc("Overlay additional noise on top of the interoplated terrain.")
-    private KList<IrisShapedGeneratorStyle> overlayNoise = new KList<>();
-    @Desc("If true, the spawner system has infinite energy. This is NOT recommended because it would allow for mobs to keep spawning over and over without a rate limit")
-    private boolean infiniteEnergy = false;
-    @MinNumber(0)
-    @MaxNumber(10000)
-    @Desc("This is the maximum energy you can have in a dimension")
-    private double maximumEnergy = 1000;
-    @MinNumber(0.0001)
-    @MaxNumber(512)
-    @Desc("The rock zoom mostly for zooming in on a wispy palette")
-    private double rockZoom = 5;
-    @Desc("The palette of blocks for 'stone'")
-    private IrisMaterialPalette rockPalette = new IrisMaterialPalette().qclear().qadd("stone");
-    @Desc("The palette of blocks for 'water'")
-    private IrisMaterialPalette fluidPalette = new IrisMaterialPalette().qclear().qadd("water");
-    @Desc("Remove cartographers so they do not crash the server (Iris worlds only)")
-    private boolean removeCartographersDueToCrash = true;
-    @Desc("Notify players of cancelled cartographer villager in this radius in blocks (set to -1 to disable, -2 for everyone)")
-    private int notifyPlayersOfCartographerCancelledRadius = 30;
-    @Desc("Collection of ores to be generated")
-    @ArrayType(type = IrisOreGenerator.class, min = 1)
-    private KList<IrisOreGenerator> ores = new KList<>();
-    @MinNumber(0)
-    @MaxNumber(318)
-    @Desc("The Subterrain Fluid Layer Height")
-    private int caveLavaHeight = 8;
-
-    public int getMaxHeight() {
-        return (int) getDimensionHeight().getMax();
-    }
-
-    public int getMinHeight() {
-        return (int) getDimensionHeight().getMin();
-    }
-
-    public BlockData generateOres(int x, int y, int z, RNG rng, IrisData data) {
-        if (ores.isEmpty()) {
-            return null;
-        }
-        BlockData b = null;
-        for (IrisOreGenerator i : ores) {
-
-            b = i.generate(x, y, z, rng, data);
-            if (b != null) {
-                return b;
-            }
-        }
-        return null;
-    }
-
-    public KList<Position2> getStrongholds(long seed) {
-        return strongholdsCache.aquire(() -> {
-            KList<Position2> pos = new KList<>();
-            int jump = strongholdJumpDistance;
-            RNG rng = new RNG((seed * 223) + 12945);
-            for (int i = 0; i < maxStrongholds + 1; i++) {
-                int m = i + 1;
-                pos.add(new Position2(
-                        (int) ((rng.i(jump * i) + (jump * i)) * (rng.b() ? -1D : 1D)),
-                        (int) ((rng.i(jump * i) + (jump * i)) * (rng.b() ? -1D : 1D))
-                ));
-            }
-
-            pos.remove(0);
-
-            return pos;
-        });
-    }
-
-    public int getFluidHeight() {
-        return fluidHeight - (int) dimensionHeight.getMin();
-    }
-
-    public CNG getCoordFracture(RNG rng, int signature) {
-        return coordFracture.aquire(() ->
-        {
-            CNG coordFracture = CNG.signature(rng.nextParallelRNG(signature));
-            coordFracture.scale(0.012 / coordFractureZoom);
-            return coordFracture;
-        });
-    }
-
-    public double getDimensionAngle() {
-        return rad.aquire(() -> Math.toRadians(dimensionAngleDeg));
-    }
-
-    public Environment getEnvironment() {
-        return environment;
-    }
-
-    public boolean hasFocusRegion() {
-        return !focusRegion.equals("");
-    }
-
-    public String getFocusRegion() {
-        return focusRegion;
-    }
-
-    public double sinRotate() {
-        return sinr.aquire(() -> Math.sin(getDimensionAngle()));
-    }
-
-    public double cosRotate() {
-        return cosr.aquire(() -> Math.cos(getDimensionAngle()));
-    }
-
-    public KList<IrisRegion> getAllRegions(DataProvider g) {
-        KList<IrisRegion> r = new KList<>();
-
-        for (String i : getRegions()) {
-            r.add(g.getData().getRegionLoader().load(i));
-        }
-
-        return r;
-    }
-
-    public KList<IrisRegion> getAllAnyRegions() {
-        KList<IrisRegion> r = new KList<>();
-
-        for (String i : getRegions()) {
-            r.add(IrisData.loadAnyRegion(i));
-        }
-
-        return r;
-    }
-
-    public KList<IrisBiome> getAllBiomes(DataProvider g) {
-        return g.getData().getBiomeLoader().loadAll(g.getData().getBiomeLoader().getPossibleKeys());
-    }
-
-    public KList<IrisBiome> getAllAnyBiomes() {
-        KList<IrisBiome> r = new KList<>();
-
-        for (IrisRegion i : getAllAnyRegions()) {
-            if (i == null) {
-                continue;
-            }
-
-            r.addAll(i.getAllAnyBiomes());
-        }
-
-        return r;
-    }
-
-    public IrisGeneratorStyle getBiomeStyle(InferredType type) {
-        switch (type) {
-            case CAVE:
-                return caveBiomeStyle;
-            case LAND:
-                return landBiomeStyle;
-            case SEA:
-                return seaBiomeStyle;
-            case SHORE:
-                return shoreBiomeStyle;
-            default:
-                break;
-        }
-
-        return landBiomeStyle;
-    }
-
-    public boolean installDataPack(DataProvider data, File datapacks, double ultimateMaxHeight, double ultimateMinHeight) {
-        boolean write = false;
-        boolean changed = false;
-
-        IO.delete(new File(datapacks, "iris/data/" + getLoadKey().toLowerCase()));
-
-        for (IrisBiome i : getAllBiomes(data)) {
-            if (i.isCustom()) {
-                write = true;
-
-                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
-                    File output = new File(datapacks, "iris/data/" + getLoadKey().toLowerCase() + "/worldgen/biome/" + j.getId() + ".json");
-
-                    if (!output.exists()) {
-                        changed = true;
-                    }
-
-                    Iris.verbose("    Installing Data Pack Biome: " + output.getPath());
-                    output.getParentFile().mkdirs();
-                    try {
-                        IO.writeAll(output, j.generateJson());
-                    } catch (IOException e) {
-                        Iris.reportError(e);
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
-
-        if (!dimensionHeight.equals(new IrisRange(-64, 320)) && this.name.equalsIgnoreCase("overworld")) {
-            Iris.verbose("    Installing Data Pack Dimension Types: \"minecraft:overworld\", \"minecraft:the_nether\", \"minecraft:the_end\"");
-            dimensionHeight.setMax(ultimateMaxHeight);
-            dimensionHeight.setMin(ultimateMinHeight);
-            changed = writeDimensionType(changed, datapacks);
-        }
-
-        if (write) {
-            File mcm = new File(datapacks, "iris/pack.mcmeta");
-            try {
-                IO.writeAll(mcm, """
-                        {
-                            "pack": {
-                                "description": "Iris Data Pack. This pack contains all installed Iris Packs' resources.",
-                                "pack_format": 10
-                            }
-                        }
-                        """);
-            } catch (IOException e) {
-                Iris.reportError(e);
-                e.printStackTrace();
-            }
-            Iris.verbose("    Installing Data Pack MCMeta: " + mcm.getPath());
-        }
-
-        return changed;
-    }
-
-    @Override
-    public String getFolderName() {
-        return "dimensions";
-    }
-
-    @Override
-    public String getTypeName() {
-        return "Dimension";
-    }
-
-    @Override
-    public void scanForErrors(JSONObject p, VolmitSender sender) {
-
-    }
-
-    public boolean writeDimensionType(boolean changed, File datapacks) {
-        File dimTypeOverworld = new File(datapacks, "iris/data/minecraft/dimension_type/overworld.json");
-        if (!dimTypeOverworld.exists())
-            changed = true;
-        dimTypeOverworld.getParentFile().mkdirs();
-        try {
-            IO.writeAll(dimTypeOverworld, generateDatapackJsonOverworld());
-        } catch (IOException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-
-
-        File dimTypeNether = new File(datapacks, "iris/data/minecraft/dimension_type/the_nether.json");
-        if (!dimTypeNether.exists())
-            changed = true;
-        dimTypeNether.getParentFile().mkdirs();
-        try {
-            IO.writeAll(dimTypeNether, generateDatapackJsonNether());
-        } catch (IOException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-
-
-        File dimTypeEnd = new File(datapacks, "iris/data/minecraft/dimension_type/the_end.json");
-        if (!dimTypeEnd.exists())
-            changed = true;
-        dimTypeEnd.getParentFile().mkdirs();
-        try {
-            IO.writeAll(dimTypeEnd, generateDatapackJsonEnd());
-        } catch (IOException e) {
-            Iris.reportError(e);
-            e.printStackTrace();
-        }
-
-        return changed;
-    }
-
-    private String generateDatapackJsonOverworld() {
-        JSONObject obj = new JSONObject(DP_OVERWORLD_DEFAULT);
-        obj.put("min_y", dimensionHeight.getMin());
-        obj.put("height", dimensionHeight.getMax() - dimensionHeight.getMin());
-        obj.put("logical_height", logicalHeight);
-        return obj.toString(4);
-    }
-
-    private String generateDatapackJsonNether() {
-        JSONObject obj = new JSONObject(DP_NETHER_DEFAULT);
-        obj.put("min_y", dimensionHeightNether.getMin());
-        obj.put("height", dimensionHeightNether.getMax() - dimensionHeightNether.getMin());
-        obj.put("logical_height", logicalHeightNether);
-        return obj.toString(4);
-    }
-
-    private String generateDatapackJsonEnd() {
-        JSONObject obj = new JSONObject(DP_END_DEFAULT);
-        obj.put("min_y", dimensionHeightEnd.getMin());
-        obj.put("height", dimensionHeightEnd.getMax() - dimensionHeightEnd.getMin());
-        obj.put("logical_height", logicalHeightEnd);
-        return obj.toString(4);
-    }
-}
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2022 Arcane Arts (Volmit Software)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package com.volmit.iris.engine.object;
+
+import com.volmit.iris.Iris;
+import com.volmit.iris.core.IrisSettings;
+import com.volmit.iris.core.loader.IrisData;
+import com.volmit.iris.core.loader.IrisRegistrant;
+import com.volmit.iris.engine.data.cache.AtomicCache;
+import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.engine.object.annotations.*;
+import com.volmit.iris.util.collection.KList;
+import com.volmit.iris.util.data.DataProvider;
+import com.volmit.iris.util.data.Dimension;
+import com.volmit.iris.util.io.IO;
+import com.volmit.iris.util.json.JSONObject;
+import com.volmit.iris.util.math.Position2;
+import com.volmit.iris.util.math.RNG;
+import com.volmit.iris.util.noise.CNG;
+import com.volmit.iris.util.plugin.VolmitSender;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
+import lombok.experimental.Accessors;
+import org.bukkit.Material;
+import org.bukkit.World.Environment;
+import org.bukkit.block.data.BlockData;
+
+import java.io.DataInput;
+import java.io.File;
+import java.io.IOException;
+
+@Accessors(chain = true)
+@AllArgsConstructor
+@NoArgsConstructor
+@Desc("Represents a dimension")
+@Data
+@EqualsAndHashCode(callSuper = false)
+public class IrisDimension extends IrisRegistrant {
+    public static final BlockData STONE = Material.STONE.createBlockData();
+    public static final BlockData WATER = Material.WATER.createBlockData();
+    private final transient AtomicCache<Position2> parallaxSize = new AtomicCache<>();
+    private final transient AtomicCache<CNG> rockLayerGenerator = new AtomicCache<>();
+    private final transient AtomicCache<CNG> fluidLayerGenerator = new AtomicCache<>();
+    private final transient AtomicCache<CNG> coordFracture = new AtomicCache<>();
+    private final transient AtomicCache<Double> sinr = new AtomicCache<>();
+    private final transient AtomicCache<Double> cosr = new AtomicCache<>();
+    private final transient AtomicCache<Double> rad = new AtomicCache<>();
+    private final transient AtomicCache<Boolean> featuresUsed = new AtomicCache<>();
+    private final transient AtomicCache<KList<Position2>> strongholdsCache = new AtomicCache<>();
+    @MinNumber(2)
+    @Required
+    @Desc("The human readable name of this dimension")
+    private String name = "A Dimension";
+    @MinNumber(1)
+    @MaxNumber(2032)
+    @Desc("Maximum height at which players can be teleported to through gameplay.")
+    private int logicalHeight = 256;
+    @RegistryListResource(IrisJigsawStructure.class)
+    @Desc("If defined, Iris will place the given jigsaw structure where minecraft should place the overworld stronghold.")
+    private String stronghold;
+    @Desc("If set to true, Iris will remove chunks to allow visualizing cross sections of chunks easily")
+    private boolean debugChunkCrossSections = false;
+    @Desc("Vertically split up the biome palettes with 3 air blocks in between to visualize them")
+    private boolean explodeBiomePalettes = false;
+    @Desc("Studio Mode for testing different parts of the world")
+    private StudioMode studioMode = StudioMode.NORMAL;
+    @MinNumber(1)
+    @MaxNumber(16)
+    @Desc("Customize the palette height explosion")
+    private int explodeBiomePaletteSize = 3;
+    @MinNumber(2)
+    @MaxNumber(16)
+    @Desc("Every X/Z % debugCrossSectionsMod == 0 cuts the chunk")
+    private int debugCrossSectionsMod = 3;
+    @Desc("The average distance between strongholds")
+    private int strongholdJumpDistance = 1280;
+    @Desc("Define the maximum strongholds to place")
+    private int maxStrongholds = 14;
+    @Desc("Tree growth override settings")
+    private IrisTreeSettings treeSettings = new IrisTreeSettings();
+    @Desc("Spawn Entities in this dimension over time. Iris will continually replenish these mobs just like vanilla does.")
+    @ArrayType(min = 1, type = String.class)
+    @RegistryListResource(IrisSpawner.class)
+    private KList<String> entitySpawners = new KList<>();
+    @Desc("Reference loot tables in this area")
+    private IrisLootReference loot = new IrisLootReference();
+    @MinNumber(0)
+    @Desc("The version of this dimension. Changing this will stop users from accidentally upgrading (and breaking their worlds).")
+    private int version = 1;
+    @ArrayType(min = 1, type = IrisBlockDrops.class)
+    @Desc("Define custom block drops for this dimension")
+    private KList<IrisBlockDrops> blockDrops = new KList<>();
+    @Desc("Should bedrock be generated or not.")
+    private boolean bedrock = true;
+    @MinNumber(0)
+    @MaxNumber(1)
+    @Desc("The land chance. Up to 1.0 for total land or 0.0 for total sea")
+    private double landChance = 0.625;
+    @Desc("The placement style of regions")
+    private IrisGeneratorStyle regionStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
+    @Desc("The placement style of land/sea")
+    private IrisGeneratorStyle continentalStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
+    @Desc("The placement style of biomes")
+    private IrisGeneratorStyle landBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
+    @Desc("The placement style of biomes")
+    private IrisGeneratorStyle shoreBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
+    @Desc("The placement style of biomes")
+    private IrisGeneratorStyle seaBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
+    @Desc("The placement style of biomes")
+    private IrisGeneratorStyle caveBiomeStyle = NoiseStyle.CELLULAR_IRIS_DOUBLE.style();
+    @Desc("Instead of filling objects with air, fills them with cobweb so you can see them")
+    private boolean debugSmartBore = false;
+    @Desc("Generate decorations or not")
+    private boolean decorate = true;
+    @Desc("Use post processing or not")
+    private boolean postProcessing = true;
+    @Desc("Add slabs in post processing")
+    private boolean postProcessingSlabs = true;
+    @Desc("Add painted walls in post processing")
+    private boolean postProcessingWalls = true;
+    @Desc("Carving configuration for the dimension")
+    private IrisCarving carving = new IrisCarving();
+    @Desc("Configuration of fluid bodies such as rivers & lakes")
+    private IrisFluidBodies fluidBodies = new IrisFluidBodies();
+    @Desc("forceConvertTo320Height")
+    private Boolean forceConvertTo320Height = false;
+    @Desc("The world environment")
+    private Environment environment = Environment.NORMAL;
+    @RegistryListResource(IrisRegion.class)
+    @Required
+    @ArrayType(min = 1, type = String.class)
+    @Desc("Define all of the regions to include in this dimension. Dimensions -> Regions -> Biomes -> Objects etc")
+    private KList<String> regions = new KList<>();
+    @ArrayType(min = 1, type = IrisJigsawStructurePlacement.class)
+    @Desc("Jigsaw structures")
+    private KList<IrisJigsawStructurePlacement> jigsawStructures = new KList<>();
+    @Required
+    @MinNumber(0)
+    @MaxNumber(1024)
+    @Desc("The fluid height for this dimension")
+    private int fluidHeight = 63;
+    @Desc("Define the min and max Y bounds of this dimension. Please keep in mind that Iris internally generates from 0 to (max - min). \n\nFor example at -64 to 320, Iris is internally generating to 0 to 384, then on outputting chunks, it shifts it down by the min height (64 blocks). The default is -64 to 320. \n\nThe fluid height is placed at (fluid height + min height). So a fluid height of 63 would actually show up in the world at 1.")
+    private IrisRange dimensionHeight = new IrisRange(-64, 320);
+    @Desc("Enable smart vanilla height")
+    private boolean smartVanillaHeight = false;
+    @RegistryListResource(IrisBiome.class)
+    @Desc("Keep this either undefined or empty. Setting any biome name into this will force iris to only generate the specified biome. Great for testing.")
+    private String focus = "";
+    @RegistryListResource(IrisRegion.class)
+    @Desc("Keep this either undefined or empty. Setting any region name into this will force iris to only generate the specified region. Great for testing.")
+    private String focusRegion = "";
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("Zoom in or out the biome size. Higher = bigger biomes")
+    private double biomeZoom = 5D;
+    @MinNumber(0)
+    @MaxNumber(360)
+    @Desc("You can rotate the input coordinates by an angle. This can make terrain appear more natural (less sharp corners and lines). This literally rotates the entire dimension by an angle. Hint: Try 12 degrees or something not on a 90 or 45 degree angle.")
+    private double dimensionAngleDeg = 0;
+    @Required
+    @Desc("Define the mode of this dimension (required!)")
+    private IrisDimensionMode mode = new IrisDimensionMode();
+    @MinNumber(0)
+    @MaxNumber(8192)
+    @Desc("Coordinate fracturing applies noise to the input coordinates. This creates the 'iris swirls' and wavy features. The distance pushes these waves further into places they shouldnt be. This is a block value multiplier.")
+    private double coordFractureDistance = 20;
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("Coordinate fracturing zoom. Higher = less frequent warping, Lower = more frequent and rapid warping / swirls.")
+    private double coordFractureZoom = 8;
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("This zooms in the land space")
+    private double landZoom = 1;
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("This zooms oceanic biomes")
+    private double seaZoom = 1;
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("Zoom in continents")
+    private double continentZoom = 1;
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("Change the size of regions")
+    private double regionZoom = 1;
+    @Desc("Disable this to stop placing objects, entities, features & updates")
+    private boolean useMantle = true;
+    @Desc("Prevent Leaf decay as if placed in creative mode")
+    private boolean preventLeafDecay = false;
+    @ArrayType(min = 1, type = IrisDepositGenerator.class)
+    @Desc("Define global deposit generators")
+    private KList<IrisDepositGenerator> deposits = new KList<>();
+    @ArrayType(min = 1, type = IrisShapedGeneratorStyle.class)
+    @Desc("Overlay additional noise on top of the interoplated terrain.")
+    private KList<IrisShapedGeneratorStyle> overlayNoise = new KList<>();
+    @Desc("If true, the spawner system has infinite energy. This is NOT recommended because it would allow for mobs to keep spawning over and over without a rate limit")
+    private boolean infiniteEnergy = false;
+    @MinNumber(0)
+    @MaxNumber(10000)
+    @Desc("This is the maximum energy you can have in a dimension")
+    private double maximumEnergy = 1000;
+    @MinNumber(0.0001)
+    @MaxNumber(512)
+    @Desc("The rock zoom mostly for zooming in on a wispy palette")
+    private double rockZoom = 5;
+    @Desc("The palette of blocks for 'stone'")
+    private IrisMaterialPalette rockPalette = new IrisMaterialPalette().qclear().qadd("stone");
+    @Desc("The palette of blocks for 'water'")
+    private IrisMaterialPalette fluidPalette = new IrisMaterialPalette().qclear().qadd("water");
+    @Desc("Remove cartographers so they do not crash the server (Iris worlds only)")
+    private boolean removeCartographersDueToCrash = true;
+    @Desc("Notify players of cancelled cartographer villager in this radius in blocks (set to -1 to disable, -2 for everyone)")
+    private int notifyPlayersOfCartographerCancelledRadius = 30;
+    @Desc("Collection of ores to be generated")
+    @ArrayType(type = IrisOreGenerator.class, min = 1)
+    private KList<IrisOreGenerator> ores = new KList<>();
+    @MinNumber(0)
+    @MaxNumber(318)
+    @Desc("The Subterrain Fluid Layer Height")
+    private int caveLavaHeight = 8;
+
+    public int getMaxHeight() {
+        return (int) getDimensionHeight().getMax();
+    }
+
+    public int getMinHeight() {
+        return (int) getDimensionHeight().getMin();
+    }
+
+    public BlockData generateOres(int x, int y, int z, RNG rng, IrisData data) {
+        if (ores.isEmpty()) {
+            return null;
+        }
+        BlockData b = null;
+        for (IrisOreGenerator i : ores) {
+
+            b = i.generate(x, y, z, rng, data);
+            if (b != null) {
+                return b;
+            }
+        }
+        return null;
+    }
+
+    public KList<Position2> getStrongholds(long seed) {
+        return strongholdsCache.aquire(() -> {
+            KList<Position2> pos = new KList<>();
+            int jump = strongholdJumpDistance;
+            RNG rng = new RNG((seed * 223) + 12945);
+            for (int i = 0; i < maxStrongholds + 1; i++) {
+                int m = i + 1;
+                pos.add(new Position2(
+                        (int) ((rng.i(jump * i) + (jump * i)) * (rng.b() ? -1D : 1D)),
+                        (int) ((rng.i(jump * i) + (jump * i)) * (rng.b() ? -1D : 1D))
+                ));
+            }
+
+            pos.remove(0);
+
+            return pos;
+        });
+    }
+
+    public int getFluidHeight() {
+        return fluidHeight - (int) dimensionHeight.getMin();
+    }
+
+    public CNG getCoordFracture(RNG rng, int signature) {
+        return coordFracture.aquire(() ->
+        {
+            CNG coordFracture = CNG.signature(rng.nextParallelRNG(signature));
+            coordFracture.scale(0.012 / coordFractureZoom);
+            return coordFracture;
+        });
+    }
+
+    public double getDimensionAngle() {
+        return rad.aquire(() -> Math.toRadians(dimensionAngleDeg));
+    }
+
+    public Environment getEnvironment() {
+        return environment;
+    }
+
+    public IrisRange getDimensionHeight() {
+        return smartVanillaHeight ? new IrisRange(-64, 320) : dimensionHeight;
+    }
+
+    public int getLogicalHeight() {
+        return smartVanillaHeight ? 256 : logicalHeight;
+    }
+
+    public boolean hasFocusRegion() {
+        return !focusRegion.equals("");
+    }
+
+    public String getFocusRegion() {
+        return focusRegion;
+    }
+
+    public double sinRotate() {
+        return sinr.aquire(() -> Math.sin(getDimensionAngle()));
+    }
+
+    public double cosRotate() {
+        return cosr.aquire(() -> Math.cos(getDimensionAngle()));
+    }
+
+    public KList<IrisRegion> getAllRegions(DataProvider g) {
+        KList<IrisRegion> r = new KList<>();
+
+        for (String i : getRegions()) {
+            r.add(g.getData().getRegionLoader().load(i));
+        }
+
+        return r;
+    }
+
+    public KList<IrisRegion> getAllAnyRegions() {
+        KList<IrisRegion> r = new KList<>();
+
+        for (String i : getRegions()) {
+            r.add(IrisData.loadAnyRegion(i));
+        }
+
+        return r;
+    }
+
+    public KList<IrisBiome> getAllBiomes(DataProvider g) {
+        return g.getData().getBiomeLoader().loadAll(g.getData().getBiomeLoader().getPossibleKeys());
+    }
+
+    public KList<IrisBiome> getAllAnyBiomes() {
+        KList<IrisBiome> r = new KList<>();
+
+        for (IrisRegion i : getAllAnyRegions()) {
+            if (i == null) {
+                continue;
+            }
+
+            r.addAll(i.getAllAnyBiomes());
+        }
+
+        return r;
+    }
+
+    public IrisGeneratorStyle getBiomeStyle(InferredType type) {
+        switch (type) {
+            case CAVE:
+                return caveBiomeStyle;
+            case LAND:
+                return landBiomeStyle;
+            case SEA:
+                return seaBiomeStyle;
+            case SHORE:
+                return shoreBiomeStyle;
+            default:
+                break;
+        }
+
+        return landBiomeStyle;
+    }
+
+    public boolean installDataPack(DataProvider data, File datapacks) {
+        boolean write = false;
+        boolean changed = false;
+
+        IO.delete(new File(datapacks, "iris/data/" + getLoadKey().toLowerCase()));
+
+        for (IrisBiome i : getAllBiomes(data)) {
+            if (i.isCustom()) {
+                write = true;
+
+                for (IrisBiomeCustom j : i.getCustomDerivitives()) {
+                    File output = new File(datapacks, "iris/data/" + getLoadKey().toLowerCase() + "/worldgen/biome/" + j.getId() + ".json");
+
+                    if (!output.exists()) {
+                        changed = true;
+                    }
+
+                    Iris.verbose("    Installing Data Pack Biome: " + output.getPath());
+                    output.getParentFile().mkdirs();
+                    try {
+                        IO.writeAll(output, j.generateJson());
+                    } catch (IOException e) {
+                        Iris.reportError(e);
+                        e.printStackTrace();
+                    }
+                }
+            }
+        }
+
+        if (write) {
+            File mcm = new File(datapacks, "iris/pack.mcmeta");
+            try {
+                IO.writeAll(mcm, """
+                        {
+                            "pack": {
+                                "description": "Iris Data Pack. This pack contains all installed Iris Packs' resources.",
+                                "pack_format": 10
+                            }
+                        }
+                        """);
+            } catch (IOException e) {
+                Iris.reportError(e);
+                e.printStackTrace();
+            }
+            Iris.verbose("    Installing Data Pack MCMeta: " + mcm.getPath());
+        }
+
+        return changed;
+    }
+
+    @Override
+    public String getFolderName() {
+        return "dimensions";
+    }
+
+    @Override
+    public String getTypeName() {
+        return "Dimension";
+    }
+
+    @Override
+    public void scanForErrors(JSONObject p, VolmitSender sender) {
+
+    }
+}
diff --git a/nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/NMSBinding.java b/nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/NMSBinding.java
index ca74aad02..8d01af591 100644
--- a/nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/NMSBinding.java
+++ b/nms/v1_19_R1/src/main/java/com/volmit/iris/core/nms/v1_19_R1/NMSBinding.java
@@ -6,6 +6,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FilenameFilter;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -13,13 +14,19 @@ import java.util.IdentityHashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Vector;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import com.google.common.base.Preconditions;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.JsonOps;
 import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.format.C;
 import com.volmit.iris.util.io.IO;
 import it.unimi.dsi.fastutil.objects.Reference2IntMap;
@@ -29,9 +36,14 @@ import net.bytebuddy.dynamic.loading.ClassReloadingStrategy;
 import net.bytebuddy.matcher.ElementMatchers;
 import net.minecraft.core.MappedRegistry;
 import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.GsonHelper;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
+import net.minecraft.world.level.storage.LevelStorageSource;
+import net.minecraft.world.level.storage.PrimaryLevelData;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -45,6 +57,7 @@ import org.bukkit.craftbukkit.v1_19_R1.inventory.CraftItemStack;
 import org.bukkit.entity.Dolphin;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -551,25 +564,34 @@ public class NMSBinding implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File folder) {
+    public boolean registerDimension(String name, IrisDimension dimension) {
+        var registry = registry(Registry.DIMENSION_TYPE_REGISTRY);
+        var baseLocation = switch (dimension.getEnvironment()) {
+            case NORMAL -> new ResourceLocation("minecraft", "overworld");
+            case NETHER -> new ResourceLocation("minecraft", "the_nether");
+            case THE_END -> new ResourceLocation("minecraft", "the_end");
+            case CUSTOM -> throw new IllegalArgumentException("Cannot register custom dimension");
+        };
+        var base = registry.getHolder(ResourceKey.create(Registry.DIMENSION_TYPE_REGISTRY, baseLocation)).orElse(null);
+        if (base == null) return false;
+        var json = encode(DimensionType.CODEC, base).orElse(null);
+        if (json == null) return false;
+        var object = json.getAsJsonObject();
+        var height = dimension.getDimensionHeight();
+        object.addProperty("min_y", height.getMin());
+        object.addProperty("height", height.getMax() - height.getMin());
+        object.addProperty("logical_height", dimension.getLogicalHeight());
+        var value = decode(DimensionType.CODEC, object.toString()).map(Holder::value).orElse(null);
+        if (value == null) return false;
+        return register(Registry.DIMENSION_TYPE_REGISTRY, new ResourceLocation("iris", name), value, true);
+    }
+
+    @Override
+    public boolean loadDatapack(File folder, boolean replace) {
         var data = new File(folder, "iris/data");
         if (!data.exists() || !data.isDirectory()) return false;
         FilenameFilter jsonFilter = (dir, name) -> new File(dir, name).isFile() && name.toLowerCase().endsWith(".json");
 
-        var dimensionFolder = new File(data, "minecraft/dimension_type");
-        if (dimensionFolder.exists()) {
-            var files = dimensionFolder.listFiles(jsonFilter);
-            if (files != null) {
-                for (File file : files) {
-                    try {
-                        modifyDimension(file);
-                    } catch (Throwable e) {
-                        Iris.error("Unable to modify dimension!");
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
         var files = data.listFiles((dir, name) -> new File(dir, name).isDirectory());
         if (files == null) return false;
         for (File file : files) {
@@ -578,8 +600,26 @@ public class NMSBinding implements INMSBinding {
             var biomeFiles = biome.listFiles(jsonFilter);
             if (biomeFiles == null) continue;
             for (File biomeFile : biomeFiles) {
+                String json = null;
+                int tries = 10;
+                while (json == null && tries-- > 0) {
+                    try {
+                        json = IO.readAll(biomeFile);
+                    } catch (IOException e) {
+                        Iris.error("Failed to read biome " + file.getName() + ":" + biomeFile.getName() + " tries left: " + tries);
+                        if (tries == 0) {
+                            e.printStackTrace();
+                        }
+                        try {
+                            Thread.sleep(100);
+                        } catch (InterruptedException ignored) {}
+                    }
+                }
+                if (json == null) continue;
+
                 try {
-                    registerBiome(file.getName(), biomeFile);
+                    var value = decode(net.minecraft.world.level.biome.Biome.CODEC, json).map(Holder::value).orElse(null);
+                    register(Registry.BIOME_REGISTRY, from(file.getName(), biomeFile), value, replace);
                 } catch (Throwable e) {
                     Iris.error("Failed to register biome " + file.getName() + ":" + biomeFile.getName());
                     e.printStackTrace();
@@ -594,75 +634,82 @@ public class NMSBinding implements INMSBinding {
         return new ResourceLocation(namespace, name.substring(0, name.lastIndexOf('.')));
     }
 
-    private void registerBiome(String namespace, File file) throws Throwable {
-        var rawRegistry = registry().registry(Registry.BIOME_REGISTRY).orElse(null);
-        var key = ResourceKey.create(Registry.BIOME_REGISTRY, from(namespace, file));
-        if (!(rawRegistry instanceof MappedRegistry<net.minecraft.world.level.biome.Biome> registry))
-            throw new IllegalStateException("The Biome Registry is not a mapped Registry!");
-        if (registry.containsKey(key)) return;
-        Field field = getField(MappedRegistry.class, boolean.class);
-        field.setAccessible(true);
-        boolean frozen = field.getBoolean(registry);
-        field.setBoolean(registry, false);
-        Field holdersField = null;
-        boolean holders = false;
-        for (Field f : MappedRegistry.class.getDeclaredFields()) {
-            if (!f.getGenericType().getTypeName().startsWith("java.util.Map<T, "))
-                continue;
-            holdersField = f;
-        }
-        if (holdersField != null) {
-            holdersField.setAccessible(true);
-            holders = holdersField.get(registry) == null;
-            if (holders) holdersField.set(registry, new IdentityHashMap<>());
-        }
+    private <T> Optional<T> decode(Codec<T> codec, String json) {
+        return codec.decode(JsonOps.INSTANCE, GsonHelper.parse(json)).get().left().map(Pair::getFirst);
+    }
 
+    private <T> Optional<JsonElement> encode(Codec<T> codec, T value) {
+        return codec.encode(value, JsonOps.INSTANCE, new JsonObject()).result();
+    }
+
+    private <T> boolean register(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value, boolean replace) {
+        Preconditions.checkArgument(registryKey != null, "The registry cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
         try {
-            var biome = net.minecraft.world.level.biome.Biome.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                    .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-            if (biome == null)
-                throw new IllegalStateException("Failed to decode biome " + file.getName());
-
-            registry.createIntrusiveHolder(biome);
-            registry.register(key, biome, Lifecycle.stable());
-        } finally {
-            field.setBoolean(registry, frozen);
-            if (holders) {
-                holdersField.set(registry, null);
+            if (registry.containsKey(key)) {
+                if (!replace) return false;
+                return replace(registryKey, location, value);
             }
+            Field field = getField(MappedRegistry.class, boolean.class);
+            field.setAccessible(true);
+            boolean frozen = field.getBoolean(registry);
+            field.setBoolean(registry, false);
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+
+            try {
+                var holder = registry.register(key, value, Lifecycle.stable());
+                if (frozen) valueField.set(holder, value);
+                return true;
+            } finally {
+                field.setBoolean(registry, frozen);
+            }
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
         }
     }
 
     @SuppressWarnings("unchecked")
-    private void modifyDimension(File file) throws Throwable {
-        var key = ResourceKey.create(Registry.DIMENSION_TYPE_REGISTRY, from("minecraft", file));
-        var rawRegistry = registry().registry(Registry.DIMENSION_TYPE_REGISTRY).orElse(null);
-        if (!(rawRegistry instanceof MappedRegistry<DimensionType> registry))
-            throw new IllegalStateException("The Dimension Registry is not a mapped Registry!");
+    private <T> boolean replace(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value) {
+        Preconditions.checkArgument(registryKey != null, "The registryKey cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
+        try {
+            var holder = registry.getHolder(key).orElse(null);
+            if (holder == null) return false;
+            var oldValue = holder.value();
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+            Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
+            toIdField.setAccessible(true);
+            Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
+            byValueField.setAccessible(true);
+            Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
+            lifecyclesField.setAccessible(true);
+            var toId = (Reference2IntMap<T>) toIdField.get(registry);
+            var byValue = (Map<T, Holder.Reference<T>>) byValueField.get(registry);
+            var lifecycles = (Map<T, Lifecycle>) lifecyclesField.get(registry);
 
-        var holder = registry.getHolder(key).orElseThrow(() -> new IllegalStateException("Unknown dimension type: " + key));
-        var oldValue = holder.value();
-        Field valueField = getField(Holder.Reference.class, "T");
-        valueField.setAccessible(true);
-        Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
-        toIdField.setAccessible(true);
-        Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
-        byValueField.setAccessible(true);
-        Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
-        lifecyclesField.setAccessible(true);
-        var toId = (Reference2IntMap<DimensionType>) toIdField.get(registry);
-        var byValue = (Map<DimensionType, Holder.Reference<DimensionType>>) byValueField.get(registry);
-        var lifecycles = (Map<DimensionType, Lifecycle>) lifecyclesField.get(registry);
+            valueField.set(holder, value);
+            toId.put(value, toId.removeInt(oldValue));
+            byValue.put(value, byValue.remove(oldValue));
+            lifecycles.put(value, lifecycles.remove(oldValue));
+            return true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
 
-        var newValue = DimensionType.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-        if (newValue == null)
-            throw new IllegalArgumentException("Failed to parse dimension type " + key.location() + " from " + file);
-
-        valueField.set(holder, newValue);
-        toId.put(newValue, toId.removeInt(oldValue));
-        byValue.put(newValue, byValue.remove(oldValue));
-        lifecycles.put(newValue, lifecycles.remove(oldValue));
+    private <T> MappedRegistry<T> registry(ResourceKey<Registry<T>> registryKey) {
+        var rawRegistry = registry().registry(registryKey).orElse(null);
+        if (!(rawRegistry instanceof MappedRegistry<T> registry))
+            throw new IllegalStateException("The Registry is not a mapped Registry!");
+        return registry;
     }
 
     private static String buildType(Class<?> clazz, String... parameterTypes) {
@@ -715,6 +762,13 @@ public class NMSBinding implements INMSBinding {
                     .visit(Advice.to(WorldCreatorAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(String.class))))
                     .make()
                     .load(WorldCreator.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
+            new ByteBuddy()
+                    .redefine(ServerLevel.class)
+                    .visit(Advice.to(ServerLevelAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(MinecraftServer.class, Executor.class, LevelStorageSource.LevelStorageAccess.class,
+                            PrimaryLevelData.class, ResourceKey.class, LevelStem.class, ChunkProgressListener.class, boolean.class, long.class,
+                            List.class, boolean.class, World.Environment.class, ChunkGenerator.class, BiomeProvider.class))))
+                    .make()
+                    .load(ServerLevel.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
             Iris.info("Injected Bukkit Successfully!");
         } catch (Exception e) {
             Iris.info(C.RED + "Failed to Inject Bukkit!");
@@ -724,6 +778,22 @@ public class NMSBinding implements INMSBinding {
 
     }
 
+    private static class ServerLevelAdvice {
+        @Advice.OnMethodEnter
+        static void enter(@Advice.Argument(0) MinecraftServer server, @Advice.Argument(2) LevelStorageSource.LevelStorageAccess access, @Advice.Argument(4) ResourceKey<Level> key, @Advice.Argument(value = 5, readOnly = false) LevelStem levelStem) {
+            File iris = new File(access.levelDirectory.path().toFile(), "iris");
+            if (!iris.exists() && !key.location().getPath().startsWith("iris/")) return;
+            var logger = MinecraftServer.LOGGER;
+            ResourceKey<DimensionType> typeKey = ResourceKey.create(Registry.DIMENSION_TYPE_REGISTRY, new ResourceLocation("iris", key.location().getPath()));
+            RegistryAccess registryAccess = server.registryAccess();
+            Registry<DimensionType> registry = registryAccess.registry(Registry.DIMENSION_TYPE_REGISTRY).orElse(null);
+            if (registry == null) throw new IllegalStateException("Unable to find registry for dimension type " + typeKey);
+            Holder<DimensionType> holder = registry.getHolder(typeKey).orElse(null);
+            if (holder == null) throw new IllegalStateException("Unable to find dimension type " + typeKey);
+            levelStem = new LevelStem(holder, levelStem.generator());
+        }
+    }
+
     private static class WorldCreatorAdvice {
         @Advice.OnMethodEnter
         static void enter(@Advice.Argument(0) String name) {
@@ -741,4 +811,4 @@ public class NMSBinding implements INMSBinding {
             }
         }
     }
-}
+}
\ No newline at end of file
diff --git a/nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/NMSBinding.java b/nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/NMSBinding.java
index c58eb3143..59c54c2ad 100644
--- a/nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/NMSBinding.java
+++ b/nms/v1_19_R2/src/main/java/com/volmit/iris/core/nms/v1_19_R2/NMSBinding.java
@@ -6,6 +6,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FilenameFilter;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -13,13 +14,19 @@ import java.util.IdentityHashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Vector;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import com.google.common.base.Preconditions;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.JsonOps;
 import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.format.C;
 import com.volmit.iris.util.io.IO;
 import it.unimi.dsi.fastutil.objects.Reference2IntMap;
@@ -29,9 +36,14 @@ import net.bytebuddy.dynamic.loading.ClassReloadingStrategy;
 import net.bytebuddy.matcher.ElementMatchers;
 import net.minecraft.core.MappedRegistry;
 import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.GsonHelper;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
+import net.minecraft.world.level.storage.LevelStorageSource;
+import net.minecraft.world.level.storage.PrimaryLevelData;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -45,6 +57,7 @@ import org.bukkit.craftbukkit.v1_19_R2.inventory.CraftItemStack;
 import org.bukkit.entity.Dolphin;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -553,25 +566,34 @@ public class NMSBinding implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File folder) {
+    public boolean registerDimension(String name, IrisDimension dimension) {
+        var registry = registry(Registries.DIMENSION_TYPE);
+        var baseLocation = switch (dimension.getEnvironment()) {
+            case NORMAL -> new ResourceLocation("minecraft", "overworld");
+            case NETHER -> new ResourceLocation("minecraft", "the_nether");
+            case THE_END -> new ResourceLocation("minecraft", "the_end");
+            case CUSTOM -> throw new IllegalArgumentException("Cannot register custom dimension");
+        };
+        var base = registry.getHolder(ResourceKey.create(Registries.DIMENSION_TYPE, baseLocation)).orElse(null);
+        if (base == null) return false;
+        var json = encode(DimensionType.CODEC, base).orElse(null);
+        if (json == null) return false;
+        var object = json.getAsJsonObject();
+        var height = dimension.getDimensionHeight();
+        object.addProperty("min_y", height.getMin());
+        object.addProperty("height", height.getMax() - height.getMin());
+        object.addProperty("logical_height", dimension.getLogicalHeight());
+        var value = decode(DimensionType.CODEC, object.toString()).map(Holder::value).orElse(null);
+        if (value == null) return false;
+        return register(Registries.DIMENSION_TYPE, new ResourceLocation("iris", name), value, true);
+    }
+
+    @Override
+    public boolean loadDatapack(File folder, boolean replace) {
         var data = new File(folder, "iris/data");
         if (!data.exists() || !data.isDirectory()) return false;
         FilenameFilter jsonFilter = (dir, name) -> new File(dir, name).isFile() && name.toLowerCase().endsWith(".json");
 
-        var dimensionFolder = new File(data, "minecraft/dimension_type");
-        if (dimensionFolder.exists()) {
-            var files = dimensionFolder.listFiles(jsonFilter);
-            if (files != null) {
-                for (File file : files) {
-                    try {
-                        modifyDimension(file);
-                    } catch (Throwable e) {
-                        Iris.error("Unable to modify dimension!");
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
         var files = data.listFiles((dir, name) -> new File(dir, name).isDirectory());
         if (files == null) return false;
         for (File file : files) {
@@ -580,8 +602,26 @@ public class NMSBinding implements INMSBinding {
             var biomeFiles = biome.listFiles(jsonFilter);
             if (biomeFiles == null) continue;
             for (File biomeFile : biomeFiles) {
+                String json = null;
+                int tries = 10;
+                while (json == null && tries-- > 0) {
+                    try {
+                        json = IO.readAll(biomeFile);
+                    } catch (IOException e) {
+                        Iris.error("Failed to read biome " + file.getName() + ":" + biomeFile.getName() + " tries left: " + tries);
+                        if (tries == 0) {
+                            e.printStackTrace();
+                        }
+                        try {
+                            Thread.sleep(100);
+                        } catch (InterruptedException ignored) {}
+                    }
+                }
+                if (json == null) continue;
+
                 try {
-                    registerBiome(file.getName(), biomeFile);
+                    var value = decode(net.minecraft.world.level.biome.Biome.CODEC, json).map(Holder::value).orElse(null);
+                    register(Registries.BIOME, from(file.getName(), biomeFile), value, replace);
                 } catch (Throwable e) {
                     Iris.error("Failed to register biome " + file.getName() + ":" + biomeFile.getName());
                     e.printStackTrace();
@@ -596,75 +636,82 @@ public class NMSBinding implements INMSBinding {
         return new ResourceLocation(namespace, name.substring(0, name.lastIndexOf('.')));
     }
 
-    private void registerBiome(String namespace, File file) throws Throwable {
-        var rawRegistry = registry().registry(Registries.BIOME).orElse(null);
-        var key = ResourceKey.create(Registries.BIOME, from(namespace, file));
-        if (!(rawRegistry instanceof MappedRegistry<net.minecraft.world.level.biome.Biome> registry))
-            throw new IllegalStateException("The Biome Registry is not a mapped Registry!");
-        if (registry.containsKey(key)) return;
-        Field field = getField(MappedRegistry.class, boolean.class);
-        field.setAccessible(true);
-        boolean frozen = field.getBoolean(registry);
-        field.setBoolean(registry, false);
-        Field holdersField = null;
-        boolean holders = false;
-        for (Field f : MappedRegistry.class.getDeclaredFields()) {
-            if (!f.getGenericType().getTypeName().startsWith("java.util.Map<T, "))
-                continue;
-            holdersField = f;
-        }
-        if (holdersField != null) {
-            holdersField.setAccessible(true);
-            holders = holdersField.get(registry) == null;
-            if (holders) holdersField.set(registry, new IdentityHashMap<>());
-        }
+    private <T> Optional<T> decode(Codec<T> codec, String json) {
+        return codec.decode(JsonOps.INSTANCE, GsonHelper.parse(json)).get().left().map(Pair::getFirst);
+    }
 
+    private <T> Optional<JsonElement> encode(Codec<T> codec, T value) {
+        return codec.encode(value, JsonOps.INSTANCE, new JsonObject()).result();
+    }
+
+    private <T> boolean register(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value, boolean replace) {
+        Preconditions.checkArgument(registryKey != null, "The registry cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
         try {
-            var biome = net.minecraft.world.level.biome.Biome.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                    .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-            if (biome == null)
-                throw new IllegalStateException("Failed to decode biome " + file.getName());
-
-            registry.createIntrusiveHolder(biome);
-            registry.register(key, biome, Lifecycle.stable());
-        } finally {
-            field.setBoolean(registry, frozen);
-            if (holders) {
-                holdersField.set(registry, null);
+            if (registry.containsKey(key)) {
+                if (!replace) return false;
+                return replace(registryKey, location, value);
             }
+            Field field = getField(MappedRegistry.class, boolean.class);
+            field.setAccessible(true);
+            boolean frozen = field.getBoolean(registry);
+            field.setBoolean(registry, false);
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+
+            try {
+                var holder = registry.register(key, value, Lifecycle.stable());
+                if (frozen) valueField.set(holder, value);
+                return true;
+            } finally {
+                field.setBoolean(registry, frozen);
+            }
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
         }
     }
 
     @SuppressWarnings("unchecked")
-    private void modifyDimension(File file) throws Throwable {
-        var key = ResourceKey.create(Registries.DIMENSION_TYPE, from("minecraft", file));
-        var rawRegistry = registry().registry(Registries.DIMENSION_TYPE).orElse(null);
-        if (!(rawRegistry instanceof MappedRegistry<DimensionType> registry))
-            throw new IllegalStateException("The Dimension Registry is not a mapped Registry!");
+    private <T> boolean replace(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value) {
+        Preconditions.checkArgument(registryKey != null, "The registryKey cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
+        try {
+            var holder = registry.getHolder(key).orElse(null);
+            if (holder == null) return false;
+            var oldValue = holder.value();
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+            Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
+            toIdField.setAccessible(true);
+            Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
+            byValueField.setAccessible(true);
+            Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
+            lifecyclesField.setAccessible(true);
+            var toId = (Reference2IntMap<T>) toIdField.get(registry);
+            var byValue = (Map<T, Holder.Reference<T>>) byValueField.get(registry);
+            var lifecycles = (Map<T, Lifecycle>) lifecyclesField.get(registry);
 
-        var holder = registry.getHolder(key).orElseThrow(() -> new IllegalStateException("Unknown dimension type: " + key));
-        var oldValue = holder.value();
-        Field valueField = getField(Holder.Reference.class, "T");
-        valueField.setAccessible(true);
-        Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
-        toIdField.setAccessible(true);
-        Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
-        byValueField.setAccessible(true);
-        Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
-        lifecyclesField.setAccessible(true);
-        var toId = (Reference2IntMap<DimensionType>) toIdField.get(registry);
-        var byValue = (Map<DimensionType, Holder.Reference<DimensionType>>) byValueField.get(registry);
-        var lifecycles = (Map<DimensionType, Lifecycle>) lifecyclesField.get(registry);
+            valueField.set(holder, value);
+            toId.put(value, toId.removeInt(oldValue));
+            byValue.put(value, byValue.remove(oldValue));
+            lifecycles.put(value, lifecycles.remove(oldValue));
+            return true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
 
-        var newValue = DimensionType.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-        if (newValue == null)
-            throw new IllegalArgumentException("Failed to parse dimension type " + key.location() + " from " + file);
-
-        valueField.set(holder, newValue);
-        toId.put(newValue, toId.removeInt(oldValue));
-        byValue.put(newValue, byValue.remove(oldValue));
-        lifecycles.put(newValue, lifecycles.remove(oldValue));
+    private <T> MappedRegistry<T> registry(ResourceKey<Registry<T>> registryKey) {
+        var rawRegistry = registry().registry(registryKey).orElse(null);
+        if (!(rawRegistry instanceof MappedRegistry<T> registry))
+            throw new IllegalStateException("The Registry is not a mapped Registry!");
+        return registry;
     }
 
     private static String buildType(Class<?> clazz, String... parameterTypes) {
@@ -716,6 +763,13 @@ public class NMSBinding implements INMSBinding {
                     .visit(Advice.to(WorldCreatorAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(String.class))))
                     .make()
                     .load(WorldCreator.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
+            new ByteBuddy()
+                    .redefine(ServerLevel.class)
+                    .visit(Advice.to(ServerLevelAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(MinecraftServer.class, Executor.class, LevelStorageSource.LevelStorageAccess.class,
+                            PrimaryLevelData.class, ResourceKey.class, LevelStem.class, ChunkProgressListener.class, boolean.class, long.class,
+                            List.class, boolean.class, World.Environment.class, ChunkGenerator.class, BiomeProvider.class))))
+                    .make()
+                    .load(ServerLevel.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
             Iris.info("Injected Bukkit Successfully!");
         } catch (Exception e) {
             Iris.info(C.RED + "Failed to Inject Bukkit!");
@@ -725,6 +779,21 @@ public class NMSBinding implements INMSBinding {
 
     }
 
+    private static class ServerLevelAdvice {
+        @Advice.OnMethodEnter
+        static void enter(@Advice.Argument(0) MinecraftServer server, @Advice.Argument(2) LevelStorageSource.LevelStorageAccess access, @Advice.Argument(4) ResourceKey<Level> key, @Advice.Argument(value = 5, readOnly = false) LevelStem levelStem) {
+            File iris = new File(access.levelDirectory.path().toFile(), "iris");
+            if (!iris.exists() && !key.location().getPath().startsWith("iris/")) return;
+            ResourceKey<DimensionType> typeKey = ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()));
+            RegistryAccess registryAccess = server.registryAccess();
+            Registry<DimensionType> registry = registryAccess.registry(Registries.DIMENSION_TYPE).orElse(null);
+            if (registry == null) throw new IllegalStateException("Unable to find registry for dimension type " + typeKey);
+            Holder<DimensionType> holder = registry.getHolder(typeKey).orElse(null);
+            if (holder == null) throw new IllegalStateException("Unable to find dimension type " + typeKey);
+            levelStem = new LevelStem(holder, levelStem.generator());
+        }
+    }
+
     private static class WorldCreatorAdvice {
         @Advice.OnMethodEnter
         static void enter(@Advice.Argument(0) String name) {
@@ -742,4 +811,4 @@ public class NMSBinding implements INMSBinding {
             }
         }
     }
-}
+}
\ No newline at end of file
diff --git a/nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/NMSBinding.java b/nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/NMSBinding.java
index bf1f82c6e..a1396ba1c 100644
--- a/nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/NMSBinding.java
+++ b/nms/v1_19_R3/src/main/java/com/volmit/iris/core/nms/v1_19_R3/NMSBinding.java
@@ -6,6 +6,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FilenameFilter;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -13,13 +14,19 @@ import java.util.IdentityHashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Vector;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import com.google.common.base.Preconditions;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.JsonOps;
 import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.format.C;
 import com.volmit.iris.util.io.IO;
 import it.unimi.dsi.fastutil.objects.Reference2IntMap;
@@ -29,9 +36,14 @@ import net.bytebuddy.dynamic.loading.ClassReloadingStrategy;
 import net.bytebuddy.matcher.ElementMatchers;
 import net.minecraft.core.MappedRegistry;
 import net.minecraft.resources.ResourceKey;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.GsonHelper;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
+import net.minecraft.world.level.storage.LevelStorageSource;
+import net.minecraft.world.level.storage.PrimaryLevelData;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -45,6 +57,7 @@ import org.bukkit.craftbukkit.v1_19_R3.inventory.CraftItemStack;
 import org.bukkit.entity.Dolphin;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -557,25 +570,34 @@ public class NMSBinding implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File folder) {
+    public boolean registerDimension(String name, IrisDimension dimension) {
+        var registry = registry(Registries.DIMENSION_TYPE);
+        var baseLocation = switch (dimension.getEnvironment()) {
+            case NORMAL -> new ResourceLocation("minecraft", "overworld");
+            case NETHER -> new ResourceLocation("minecraft", "the_nether");
+            case THE_END -> new ResourceLocation("minecraft", "the_end");
+            case CUSTOM -> throw new IllegalArgumentException("Cannot register custom dimension");
+        };
+        var base = registry.getHolder(ResourceKey.create(Registries.DIMENSION_TYPE, baseLocation)).orElse(null);
+        if (base == null) return false;
+        var json = encode(DimensionType.CODEC, base).orElse(null);
+        if (json == null) return false;
+        var object = json.getAsJsonObject();
+        var height = dimension.getDimensionHeight();
+        object.addProperty("min_y", height.getMin());
+        object.addProperty("height", height.getMax() - height.getMin());
+        object.addProperty("logical_height", dimension.getLogicalHeight());
+        var value = decode(DimensionType.CODEC, object.toString()).map(Holder::value).orElse(null);
+        if (value == null) return false;
+        return register(Registries.DIMENSION_TYPE, new ResourceLocation("iris", name), value, true);
+    }
+
+    @Override
+    public boolean loadDatapack(File folder, boolean replace) {
         var data = new File(folder, "iris/data");
         if (!data.exists() || !data.isDirectory()) return false;
         FilenameFilter jsonFilter = (dir, name) -> new File(dir, name).isFile() && name.toLowerCase().endsWith(".json");
 
-        var dimensionFolder = new File(data, "minecraft/dimension_type");
-        if (dimensionFolder.exists()) {
-            var files = dimensionFolder.listFiles(jsonFilter);
-            if (files != null) {
-                for (File file : files) {
-                    try {
-                        modifyDimension(file);
-                    } catch (Throwable e) {
-                        Iris.error("Unable to modify dimension!");
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
         var files = data.listFiles((dir, name) -> new File(dir, name).isDirectory());
         if (files == null) return false;
         for (File file : files) {
@@ -584,8 +606,26 @@ public class NMSBinding implements INMSBinding {
             var biomeFiles = biome.listFiles(jsonFilter);
             if (biomeFiles == null) continue;
             for (File biomeFile : biomeFiles) {
+                String json = null;
+                int tries = 10;
+                while (json == null && tries-- > 0) {
+                    try {
+                        json = IO.readAll(biomeFile);
+                    } catch (IOException e) {
+                        Iris.error("Failed to read biome " + file.getName() + ":" + biomeFile.getName() + " tries left: " + tries);
+                        if (tries == 0) {
+                            e.printStackTrace();
+                        }
+                        try {
+                            Thread.sleep(100);
+                        } catch (InterruptedException ignored) {}
+                    }
+                }
+                if (json == null) continue;
+
                 try {
-                    registerBiome(file.getName(), biomeFile);
+                    var value = decode(net.minecraft.world.level.biome.Biome.CODEC, json).map(Holder::value).orElse(null);
+                    register(Registries.BIOME, from(file.getName(), biomeFile), value, replace);
                 } catch (Throwable e) {
                     Iris.error("Failed to register biome " + file.getName() + ":" + biomeFile.getName());
                     e.printStackTrace();
@@ -600,75 +640,82 @@ public class NMSBinding implements INMSBinding {
         return new ResourceLocation(namespace, name.substring(0, name.lastIndexOf('.')));
     }
 
-    private void registerBiome(String namespace, File file) throws Throwable {
-        var rawRegistry = registry().registry(Registries.BIOME).orElse(null);
-        var key = ResourceKey.create(Registries.BIOME, from(namespace, file));
-        if (!(rawRegistry instanceof MappedRegistry<net.minecraft.world.level.biome.Biome> registry))
-            throw new IllegalStateException("The Biome Registry is not a mapped Registry!");
-        if (registry.containsKey(key)) return;
-        Field field = getField(MappedRegistry.class, boolean.class);
-        field.setAccessible(true);
-        boolean frozen = field.getBoolean(registry);
-        field.setBoolean(registry, false);
-        Field holdersField = null;
-        boolean holders = false;
-        for (Field f : MappedRegistry.class.getDeclaredFields()) {
-            if (!f.getGenericType().getTypeName().startsWith("java.util.Map<T, "))
-                continue;
-            holdersField = f;
-        }
-        if (holdersField != null) {
-            holdersField.setAccessible(true);
-            holders = holdersField.get(registry) == null;
-            if (holders) holdersField.set(registry, new IdentityHashMap<>());
-        }
+    private <T> Optional<T> decode(Codec<T> codec, String json) {
+        return codec.decode(JsonOps.INSTANCE, GsonHelper.parse(json)).get().left().map(Pair::getFirst);
+    }
 
+    private <T> Optional<JsonElement> encode(Codec<T> codec, T value) {
+        return codec.encode(value, JsonOps.INSTANCE, new JsonObject()).result();
+    }
+
+    private <T> boolean register(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value, boolean replace) {
+        Preconditions.checkArgument(registryKey != null, "The registry cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
         try {
-            var biome = net.minecraft.world.level.biome.Biome.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                    .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-            if (biome == null)
-                throw new IllegalStateException("Failed to decode biome " + file.getName());
-
-            registry.createIntrusiveHolder(biome);
-            registry.register(key, biome, Lifecycle.stable());
-        } finally {
-            field.setBoolean(registry, frozen);
-            if (holders) {
-                holdersField.set(registry, null);
+            if (registry.containsKey(key)) {
+                if (!replace) return false;
+                return replace(registryKey, location, value);
             }
+            Field field = getField(MappedRegistry.class, boolean.class);
+            field.setAccessible(true);
+            boolean frozen = field.getBoolean(registry);
+            field.setBoolean(registry, false);
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+
+            try {
+                var holder = registry.register(key, value, Lifecycle.stable());
+                if (frozen) valueField.set(holder, value);
+                return true;
+            } finally {
+                field.setBoolean(registry, frozen);
+            }
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
         }
     }
 
     @SuppressWarnings("unchecked")
-    private void modifyDimension(File file) throws Throwable {
-        var key = ResourceKey.create(Registries.DIMENSION_TYPE, from("minecraft", file));
-        var rawRegistry = registry().registry(Registries.DIMENSION_TYPE).orElse(null);
-        if (!(rawRegistry instanceof MappedRegistry<DimensionType> registry))
-            throw new IllegalStateException("The Dimension Registry is not a mapped Registry!");
+    private <T> boolean replace(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value) {
+        Preconditions.checkArgument(registryKey != null, "The registryKey cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
+        try {
+            var holder = registry.getHolder(key).orElse(null);
+            if (holder == null) return false;
+            var oldValue = holder.value();
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+            Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
+            toIdField.setAccessible(true);
+            Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
+            byValueField.setAccessible(true);
+            Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
+            lifecyclesField.setAccessible(true);
+            var toId = (Reference2IntMap<T>) toIdField.get(registry);
+            var byValue = (Map<T, Holder.Reference<T>>) byValueField.get(registry);
+            var lifecycles = (Map<T, Lifecycle>) lifecyclesField.get(registry);
 
-        var holder = registry.getHolder(key).orElseThrow(() -> new IllegalStateException("Unknown dimension type: " + key));
-        var oldValue = holder.value();
-        Field valueField = getField(Holder.Reference.class, "T");
-        valueField.setAccessible(true);
-        Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
-        toIdField.setAccessible(true);
-        Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
-        byValueField.setAccessible(true);
-        Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
-        lifecyclesField.setAccessible(true);
-        var toId = (Reference2IntMap<DimensionType>) toIdField.get(registry);
-        var byValue = (Map<DimensionType, Holder.Reference<DimensionType>>) byValueField.get(registry);
-        var lifecycles = (Map<DimensionType, Lifecycle>) lifecyclesField.get(registry);
+            valueField.set(holder, value);
+            toId.put(value, toId.removeInt(oldValue));
+            byValue.put(value, byValue.remove(oldValue));
+            lifecycles.put(value, lifecycles.remove(oldValue));
+            return true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
 
-        var newValue = DimensionType.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-        if (newValue == null)
-            throw new IllegalArgumentException("Failed to parse dimension type " + key.location() + " from " + file);
-
-        valueField.set(holder, newValue);
-        toId.put(newValue, toId.removeInt(oldValue));
-        byValue.put(newValue, byValue.remove(oldValue));
-        lifecycles.put(newValue, lifecycles.remove(oldValue));
+    private <T> MappedRegistry<T> registry(ResourceKey<Registry<T>> registryKey) {
+        var rawRegistry = registry().registry(registryKey).orElse(null);
+        if (!(rawRegistry instanceof MappedRegistry<T> registry))
+            throw new IllegalStateException("The Registry is not a mapped Registry!");
+        return registry;
     }
 
     private static String buildType(Class<?> clazz, String... parameterTypes) {
@@ -720,6 +767,13 @@ public class NMSBinding implements INMSBinding {
                     .visit(Advice.to(WorldCreatorAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(String.class))))
                     .make()
                     .load(WorldCreator.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
+            new ByteBuddy()
+                    .redefine(ServerLevel.class)
+                    .visit(Advice.to(ServerLevelAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(MinecraftServer.class, Executor.class, LevelStorageSource.LevelStorageAccess.class,
+                            PrimaryLevelData.class, ResourceKey.class, LevelStem.class, ChunkProgressListener.class, boolean.class, long.class,
+                            List.class, boolean.class, World.Environment.class, ChunkGenerator.class, BiomeProvider.class))))
+                    .make()
+                    .load(ServerLevel.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
             Iris.info("Injected Bukkit Successfully!");
         } catch (Exception e) {
             Iris.info(C.RED + "Failed to Inject Bukkit!");
@@ -729,6 +783,21 @@ public class NMSBinding implements INMSBinding {
 
     }
 
+    private static class ServerLevelAdvice {
+        @Advice.OnMethodEnter
+        static void enter(@Advice.Argument(0) MinecraftServer server, @Advice.Argument(2) LevelStorageSource.LevelStorageAccess access, @Advice.Argument(4) ResourceKey<Level> key, @Advice.Argument(value = 5, readOnly = false) LevelStem levelStem) {
+            File iris = new File(access.levelDirectory.path().toFile(), "iris");
+            if (!iris.exists() && !key.location().getPath().startsWith("iris/")) return;
+            ResourceKey<DimensionType> typeKey = ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()));
+            RegistryAccess registryAccess = server.registryAccess();
+            Registry<DimensionType> registry = registryAccess.registry(Registries.DIMENSION_TYPE).orElse(null);
+            if (registry == null) throw new IllegalStateException("Unable to find registry for dimension type " + typeKey);
+            Holder<DimensionType> holder = registry.getHolder(typeKey).orElse(null);
+            if (holder == null) throw new IllegalStateException("Unable to find dimension type " + typeKey);
+            levelStem = new LevelStem(holder, levelStem.generator());
+        }
+    }
+
     private static class WorldCreatorAdvice {
         @Advice.OnMethodEnter
         static void enter(@Advice.Argument(0) String name) {
diff --git a/nms/v1_20_R1/src/main/java/com/volmit/iris/core/nms/v1_20_R1/NMSBinding.java b/nms/v1_20_R1/src/main/java/com/volmit/iris/core/nms/v1_20_R1/NMSBinding.java
index eb4fb4162..ab01736a8 100644
--- a/nms/v1_20_R1/src/main/java/com/volmit/iris/core/nms/v1_20_R1/NMSBinding.java
+++ b/nms/v1_20_R1/src/main/java/com/volmit/iris/core/nms/v1_20_R1/NMSBinding.java
@@ -1,14 +1,18 @@
 package com.volmit.iris.core.nms.v1_20_R1;
 
 import com.google.common.base.Preconditions;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.JsonOps;
 import com.mojang.serialization.Lifecycle;
 import com.volmit.iris.Iris;
 import com.volmit.iris.core.nms.INMSBinding;
 import com.volmit.iris.engine.data.cache.AtomicCache;
 import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.collection.KList;
 import com.volmit.iris.util.collection.KMap;
 import com.volmit.iris.util.format.C;
@@ -38,8 +42,11 @@ import net.minecraft.nbt.NbtIo;
 import net.minecraft.nbt.TagParser;
 import net.minecraft.resources.ResourceKey;
 import net.minecraft.resources.ResourceLocation;
+import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.ServerLevel;
+import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.GsonHelper;
+import net.minecraft.world.RandomSequences;
 import net.minecraft.world.entity.EntityDimensions;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.biome.BiomeSource;
@@ -50,6 +57,9 @@ import net.minecraft.world.level.chunk.ChunkAccess;
 import net.minecraft.world.level.chunk.ChunkStatus;
 import net.minecraft.world.level.chunk.LevelChunk;
 import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
+import net.minecraft.world.level.storage.LevelStorageSource;
+import net.minecraft.world.level.storage.PrimaryLevelData;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -66,6 +76,7 @@ import org.bukkit.entity.Entity;
 import org.bukkit.entity.EntityType;
 import org.bukkit.event.entity.CreatureSpawnEvent;
 import org.bukkit.entity.EntityType;
+import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -77,6 +88,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FilenameFilter;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -84,7 +96,9 @@ import java.util.IdentityHashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Vector;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
 public class NMSBinding implements INMSBinding {
@@ -543,25 +557,34 @@ public class NMSBinding implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File folder) {
+    public boolean registerDimension(String name, IrisDimension dimension) {
+        var registry = registry(Registries.DIMENSION_TYPE);
+        var baseLocation = switch (dimension.getEnvironment()) {
+            case NORMAL -> new ResourceLocation("minecraft", "overworld");
+            case NETHER -> new ResourceLocation("minecraft", "the_nether");
+            case THE_END -> new ResourceLocation("minecraft", "the_end");
+            case CUSTOM -> throw new IllegalArgumentException("Cannot register custom dimension");
+        };
+        var base = registry.getHolder(ResourceKey.create(Registries.DIMENSION_TYPE, baseLocation)).orElse(null);
+        if (base == null) return false;
+        var json = encode(DimensionType.CODEC, base).orElse(null);
+        if (json == null) return false;
+        var object = json.getAsJsonObject();
+        var height = dimension.getDimensionHeight();
+        object.addProperty("min_y", height.getMin());
+        object.addProperty("height", height.getMax() - height.getMin());
+        object.addProperty("logical_height", dimension.getLogicalHeight());
+        var value = decode(DimensionType.CODEC, object.toString()).map(Holder::value).orElse(null);
+        if (value == null) return false;
+        return register(Registries.DIMENSION_TYPE, new ResourceLocation("iris", name), value, true);
+    }
+
+    @Override
+    public boolean loadDatapack(File folder, boolean replace) {
         var data = new File(folder, "iris/data");
         if (!data.exists() || !data.isDirectory()) return false;
         FilenameFilter jsonFilter = (dir, name) -> new File(dir, name).isFile() && name.toLowerCase().endsWith(".json");
 
-        var dimensionFolder = new File(data, "minecraft/dimension_type");
-        if (dimensionFolder.exists()) {
-            var files = dimensionFolder.listFiles(jsonFilter);
-            if (files != null) {
-                for (File file : files) {
-                    try {
-                        modifyDimension(file);
-                    } catch (Throwable e) {
-                        Iris.error("Unable to modify dimension!");
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
         var files = data.listFiles((dir, name) -> new File(dir, name).isDirectory());
         if (files == null) return false;
         for (File file : files) {
@@ -570,8 +593,26 @@ public class NMSBinding implements INMSBinding {
             var biomeFiles = biome.listFiles(jsonFilter);
             if (biomeFiles == null) continue;
             for (File biomeFile : biomeFiles) {
+                String json = null;
+                int tries = 10;
+                while (json == null && tries-- > 0) {
+                    try {
+                        json = IO.readAll(biomeFile);
+                    } catch (IOException e) {
+                        Iris.error("Failed to read biome " + file.getName() + ":" + biomeFile.getName() + " tries left: " + tries);
+                        if (tries == 0) {
+                            e.printStackTrace();
+                        }
+                        try {
+                            Thread.sleep(100);
+                        } catch (InterruptedException ignored) {}
+                    }
+                }
+                if (json == null) continue;
+
                 try {
-                    registerBiome(file.getName(), biomeFile);
+                    var value = decode(net.minecraft.world.level.biome.Biome.CODEC, json).map(Holder::value).orElse(null);
+                    register(Registries.BIOME, from(file.getName(), biomeFile), value, replace);
                 } catch (Throwable e) {
                     Iris.error("Failed to register biome " + file.getName() + ":" + biomeFile.getName());
                     e.printStackTrace();
@@ -586,75 +627,82 @@ public class NMSBinding implements INMSBinding {
         return new ResourceLocation(namespace, name.substring(0, name.lastIndexOf('.')));
     }
 
-    private void registerBiome(String namespace, File file) throws Throwable {
-        var rawRegistry = registry().registry(Registries.BIOME).orElse(null);
-        var key = ResourceKey.create(Registries.BIOME, from(namespace, file));
-        if (!(rawRegistry instanceof MappedRegistry<net.minecraft.world.level.biome.Biome> registry))
-            throw new IllegalStateException("The Biome Registry is not a mapped Registry!");
-        if (registry.containsKey(key)) return;
-        Field field = getField(MappedRegistry.class, boolean.class);
-        field.setAccessible(true);
-        boolean frozen = field.getBoolean(registry);
-        field.setBoolean(registry, false);
-        Field holdersField = null;
-        boolean holders = false;
-        for (Field f : MappedRegistry.class.getDeclaredFields()) {
-            if (!f.getGenericType().getTypeName().startsWith("java.util.Map<T, "))
-                continue;
-            holdersField = f;
-        }
-        if (holdersField != null) {
-            holdersField.setAccessible(true);
-            holders = holdersField.get(registry) == null;
-            if (holders) holdersField.set(registry, new IdentityHashMap<>());
-        }
+    private <T> Optional<T> decode(Codec<T> codec, String json) {
+        return codec.decode(JsonOps.INSTANCE, GsonHelper.parse(json)).get().left().map(Pair::getFirst);
+    }
 
+    private <T> Optional<JsonElement> encode(Codec<T> codec, T value) {
+        return codec.encode(value, JsonOps.INSTANCE, new JsonObject()).result();
+    }
+
+    private <T> boolean register(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value, boolean replace) {
+        Preconditions.checkArgument(registryKey != null, "The registry cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
         try {
-            var biome = net.minecraft.world.level.biome.Biome.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                    .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-            if (biome == null)
-                throw new IllegalStateException("Failed to decode biome " + file.getName());
-
-            registry.createIntrusiveHolder(biome);
-            registry.register(key, biome, Lifecycle.stable());
-        } finally {
-            field.setBoolean(registry, frozen);
-            if (holders) {
-                holdersField.set(registry, null);
+            if (registry.containsKey(key)) {
+                if (!replace) return false;
+                return replace(registryKey, location, value);
             }
+            Field field = getField(MappedRegistry.class, boolean.class);
+            field.setAccessible(true);
+            boolean frozen = field.getBoolean(registry);
+            field.setBoolean(registry, false);
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+
+            try {
+                var holder = registry.register(key, value, Lifecycle.stable());
+                if (frozen) valueField.set(holder, value);
+                return true;
+            } finally {
+                field.setBoolean(registry, frozen);
+            }
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
         }
     }
 
     @SuppressWarnings("unchecked")
-    private void modifyDimension(File file) throws Throwable {
-        var key = ResourceKey.create(Registries.DIMENSION_TYPE, from("minecraft", file));
-        var rawRegistry = registry().registry(Registries.DIMENSION_TYPE).orElse(null);
-        if (!(rawRegistry instanceof MappedRegistry<DimensionType> registry))
-            throw new IllegalStateException("The Dimension Registry is not a mapped Registry!");
+    private <T> boolean replace(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value) {
+        Preconditions.checkArgument(registryKey != null, "The registryKey cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
+        try {
+            var holder = registry.getHolder(key).orElse(null);
+            if (holder == null) return false;
+            var oldValue = holder.value();
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+            Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
+            toIdField.setAccessible(true);
+            Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
+            byValueField.setAccessible(true);
+            Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
+            lifecyclesField.setAccessible(true);
+            var toId = (Reference2IntMap<T>) toIdField.get(registry);
+            var byValue = (Map<T, Holder.Reference<T>>) byValueField.get(registry);
+            var lifecycles = (Map<T, Lifecycle>) lifecyclesField.get(registry);
 
-        var holder = registry.getHolder(key).orElseThrow(() -> new IllegalStateException("Unknown dimension type: " + key));
-        var oldValue = holder.value();
-        Field valueField = getField(Holder.Reference.class, "T");
-        valueField.setAccessible(true);
-        Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
-        toIdField.setAccessible(true);
-        Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
-        byValueField.setAccessible(true);
-        Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
-        lifecyclesField.setAccessible(true);
-        var toId = (Reference2IntMap<DimensionType>) toIdField.get(registry);
-        var byValue = (Map<DimensionType, Holder.Reference<DimensionType>>) byValueField.get(registry);
-        var lifecycles = (Map<DimensionType, Lifecycle>) lifecyclesField.get(registry);
+            valueField.set(holder, value);
+            toId.put(value, toId.removeInt(oldValue));
+            byValue.put(value, byValue.remove(oldValue));
+            lifecycles.put(value, lifecycles.remove(oldValue));
+            return true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
 
-        var newValue = DimensionType.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-        if (newValue == null)
-            throw new IllegalArgumentException("Failed to parse dimension type " + key.location() + " from " + file);
-
-        valueField.set(holder, newValue);
-        toId.put(newValue, toId.removeInt(oldValue));
-        byValue.put(newValue, byValue.remove(oldValue));
-        lifecycles.put(newValue, lifecycles.remove(oldValue));
+    private <T> MappedRegistry<T> registry(ResourceKey<Registry<T>> registryKey) {
+        var rawRegistry = registry().registry(registryKey).orElse(null);
+        if (!(rawRegistry instanceof MappedRegistry<T> registry))
+            throw new IllegalStateException("The Registry is not a mapped Registry!");
+        return registry;
     }
 
     private static String buildType(Class<?> clazz, String... parameterTypes) {
@@ -719,6 +767,13 @@ public class NMSBinding implements INMSBinding {
                     .visit(Advice.to(WorldCreatorAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(String.class))))
                     .make()
                     .load(WorldCreator.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
+            new ByteBuddy()
+                    .redefine(ServerLevel.class)
+                    .visit(Advice.to(ServerLevelAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(MinecraftServer.class, Executor.class, LevelStorageSource.LevelStorageAccess.class,
+                            PrimaryLevelData.class, ResourceKey.class, LevelStem.class, ChunkProgressListener.class, boolean.class, long.class,
+                            List.class, boolean.class, RandomSequences.class, World.Environment.class, ChunkGenerator.class, BiomeProvider.class))))
+                    .make()
+                    .load(ServerLevel.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
             Iris.info("Injected Bukkit Successfully!");
         } catch (Exception e) {
             Iris.info(C.RED + "Failed to Inject Bukkit!");
@@ -728,6 +783,21 @@ public class NMSBinding implements INMSBinding {
 
     }
 
+    private static class ServerLevelAdvice {
+        @Advice.OnMethodEnter
+        static void enter(@Advice.Argument(0) MinecraftServer server, @Advice.Argument(2) LevelStorageSource.LevelStorageAccess access, @Advice.Argument(4) ResourceKey<Level> key, @Advice.Argument(value = 5, readOnly = false) LevelStem levelStem) {
+            File iris = new File(access.levelDirectory.path().toFile(), "iris");
+            if (!iris.exists() && !key.location().getPath().startsWith("iris/")) return;
+            ResourceKey<DimensionType> typeKey = ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()));
+            RegistryAccess registryAccess = server.registryAccess();
+            Registry<DimensionType> registry = registryAccess.registry(Registries.DIMENSION_TYPE).orElse(null);
+            if (registry == null) throw new IllegalStateException("Unable to find registry for dimension type " + typeKey);
+            Holder<DimensionType> holder = registry.getHolder(typeKey).orElse(null);
+            if (holder == null) throw new IllegalStateException("Unable to find dimension type " + typeKey);
+            levelStem = new LevelStem(holder, levelStem.generator());
+        }
+    }
+
     private static class WorldCreatorAdvice {
         @Advice.OnMethodEnter
         static void enter(@Advice.Argument(0) String name) {
diff --git a/nms/v1_20_R2/src/main/java/com/volmit/iris/core/nms/v1_20_R2/NMSBinding.java b/nms/v1_20_R2/src/main/java/com/volmit/iris/core/nms/v1_20_R2/NMSBinding.java
index 2e9720472..e4af087ec 100644
--- a/nms/v1_20_R2/src/main/java/com/volmit/iris/core/nms/v1_20_R2/NMSBinding.java
+++ b/nms/v1_20_R2/src/main/java/com/volmit/iris/core/nms/v1_20_R2/NMSBinding.java
@@ -6,6 +6,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FilenameFilter;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
@@ -13,13 +14,19 @@ import java.util.IdentityHashMap;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 import java.util.Vector;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import com.google.common.base.Preconditions;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.JsonOps;
 import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.format.C;
 import com.volmit.iris.util.io.IO;
 import it.unimi.dsi.fastutil.objects.Reference2IntMap;
@@ -28,9 +35,15 @@ import net.bytebuddy.asm.Advice;
 import net.bytebuddy.dynamic.loading.ClassReloadingStrategy;
 import net.bytebuddy.matcher.ElementMatchers;
 import net.minecraft.core.MappedRegistry;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.GsonHelper;
+import net.minecraft.world.RandomSequences;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
+import net.minecraft.world.level.storage.LevelStorageSource;
+import net.minecraft.world.level.storage.PrimaryLevelData;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -44,6 +57,7 @@ import org.bukkit.craftbukkit.v1_20_R2.util.CraftNamespacedKey;
 import org.bukkit.entity.Dolphin;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -553,25 +567,34 @@ public class NMSBinding implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File folder) {
+    public boolean registerDimension(String name, IrisDimension dimension) {
+        var registry = registry(Registries.DIMENSION_TYPE);
+        var baseLocation = switch (dimension.getEnvironment()) {
+            case NORMAL -> new ResourceLocation("minecraft", "overworld");
+            case NETHER -> new ResourceLocation("minecraft", "the_nether");
+            case THE_END -> new ResourceLocation("minecraft", "the_end");
+            case CUSTOM -> throw new IllegalArgumentException("Cannot register custom dimension");
+        };
+        var base = registry.getHolder(ResourceKey.create(Registries.DIMENSION_TYPE, baseLocation)).orElse(null);
+        if (base == null) return false;
+        var json = encode(DimensionType.CODEC, base).orElse(null);
+        if (json == null) return false;
+        var object = json.getAsJsonObject();
+        var height = dimension.getDimensionHeight();
+        object.addProperty("min_y", height.getMin());
+        object.addProperty("height", height.getMax() - height.getMin());
+        object.addProperty("logical_height", dimension.getLogicalHeight());
+        var value = decode(DimensionType.CODEC, object.toString()).map(Holder::value).orElse(null);
+        if (value == null) return false;
+        return register(Registries.DIMENSION_TYPE, new ResourceLocation("iris", name), value, true);
+    }
+
+    @Override
+    public boolean loadDatapack(File folder, boolean replace) {
         var data = new File(folder, "iris/data");
         if (!data.exists() || !data.isDirectory()) return false;
         FilenameFilter jsonFilter = (dir, name) -> new File(dir, name).isFile() && name.toLowerCase().endsWith(".json");
 
-        var dimensionFolder = new File(data, "minecraft/dimension_type");
-        if (dimensionFolder.exists()) {
-            var files = dimensionFolder.listFiles(jsonFilter);
-            if (files != null) {
-                for (File file : files) {
-                    try {
-                        modifyDimension(file);
-                    } catch (Throwable e) {
-                        Iris.error("Unable to modify dimension!");
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
         var files = data.listFiles((dir, name) -> new File(dir, name).isDirectory());
         if (files == null) return false;
         for (File file : files) {
@@ -580,8 +603,26 @@ public class NMSBinding implements INMSBinding {
             var biomeFiles = biome.listFiles(jsonFilter);
             if (biomeFiles == null) continue;
             for (File biomeFile : biomeFiles) {
+                String json = null;
+                int tries = 10;
+                while (json == null && tries-- > 0) {
+                    try {
+                        json = IO.readAll(biomeFile);
+                    } catch (IOException e) {
+                        Iris.error("Failed to read biome " + file.getName() + ":" + biomeFile.getName() + " tries left: " + tries);
+                        if (tries == 0) {
+                            e.printStackTrace();
+                        }
+                        try {
+                            Thread.sleep(100);
+                        } catch (InterruptedException ignored) {}
+                    }
+                }
+                if (json == null) continue;
+
                 try {
-                    registerBiome(file.getName(), biomeFile);
+                    var value = decode(net.minecraft.world.level.biome.Biome.CODEC, json).map(Holder::value).orElse(null);
+                    register(Registries.BIOME, from(file.getName(), biomeFile), value, replace);
                 } catch (Throwable e) {
                     Iris.error("Failed to register biome " + file.getName() + ":" + biomeFile.getName());
                     e.printStackTrace();
@@ -596,75 +637,82 @@ public class NMSBinding implements INMSBinding {
         return new ResourceLocation(namespace, name.substring(0, name.lastIndexOf('.')));
     }
 
-    private void registerBiome(String namespace, File file) throws Throwable {
-        var rawRegistry = registry().registry(Registries.BIOME).orElse(null);
-        var key = ResourceKey.create(Registries.BIOME, from(namespace, file));
-        if (!(rawRegistry instanceof MappedRegistry<net.minecraft.world.level.biome.Biome> registry))
-            throw new IllegalStateException("The Biome Registry is not a mapped Registry!");
-        if (registry.containsKey(key)) return;
-        Field field = getField(MappedRegistry.class, boolean.class);
-        field.setAccessible(true);
-        boolean frozen = field.getBoolean(registry);
-        field.setBoolean(registry, false);
-        Field holdersField = null;
-        boolean holders = false;
-        for (Field f : MappedRegistry.class.getDeclaredFields()) {
-            if (!f.getGenericType().getTypeName().startsWith("java.util.Map<T, "))
-                continue;
-            holdersField = f;
-        }
-        if (holdersField != null) {
-            holdersField.setAccessible(true);
-            holders = holdersField.get(registry) == null;
-            if (holders) holdersField.set(registry, new IdentityHashMap<>());
-        }
+    private <T> Optional<T> decode(Codec<T> codec, String json) {
+        return codec.decode(JsonOps.INSTANCE, GsonHelper.parse(json)).get().left().map(Pair::getFirst);
+    }
 
+    private <T> Optional<JsonElement> encode(Codec<T> codec, T value) {
+        return codec.encode(value, JsonOps.INSTANCE, new JsonObject()).result();
+    }
+
+    private <T> boolean register(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value, boolean replace) {
+        Preconditions.checkArgument(registryKey != null, "The registry cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
         try {
-            var biome = net.minecraft.world.level.biome.Biome.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                    .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-            if (biome == null)
-                throw new IllegalStateException("Failed to decode biome " + file.getName());
-
-            registry.createIntrusiveHolder(biome);
-            registry.register(key, biome, Lifecycle.stable());
-        } finally {
-            field.setBoolean(registry, frozen);
-            if (holders) {
-                holdersField.set(registry, null);
+            if (registry.containsKey(key)) {
+                if (!replace) return false;
+                return replace(registryKey, location, value);
             }
+            Field field = getField(MappedRegistry.class, boolean.class);
+            field.setAccessible(true);
+            boolean frozen = field.getBoolean(registry);
+            field.setBoolean(registry, false);
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+
+            try {
+                var holder = registry.register(key, value, Lifecycle.stable());
+                if (frozen) valueField.set(holder, value);
+                return true;
+            } finally {
+                field.setBoolean(registry, frozen);
+            }
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
         }
     }
 
     @SuppressWarnings("unchecked")
-    private void modifyDimension(File file) throws Throwable {
-        var key = ResourceKey.create(Registries.DIMENSION_TYPE, from("minecraft", file));
-        var rawRegistry = registry().registry(Registries.DIMENSION_TYPE).orElse(null);
-        if (!(rawRegistry instanceof MappedRegistry<DimensionType> registry))
-            throw new IllegalStateException("The Dimension Registry is not a mapped Registry!");
+    private <T> boolean replace(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value) {
+        Preconditions.checkArgument(registryKey != null, "The registryKey cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
+        try {
+            var holder = registry.getHolder(key).orElse(null);
+            if (holder == null) return false;
+            var oldValue = holder.value();
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+            Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
+            toIdField.setAccessible(true);
+            Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
+            byValueField.setAccessible(true);
+            Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
+            lifecyclesField.setAccessible(true);
+            var toId = (Reference2IntMap<T>) toIdField.get(registry);
+            var byValue = (Map<T, Holder.Reference<T>>) byValueField.get(registry);
+            var lifecycles = (Map<T, Lifecycle>) lifecyclesField.get(registry);
 
-        var holder = registry.getHolder(key).orElseThrow(() -> new IllegalStateException("Unknown dimension type: " + key));
-        var oldValue = holder.value();
-        Field valueField = getField(Holder.Reference.class, "T");
-        valueField.setAccessible(true);
-        Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
-        toIdField.setAccessible(true);
-        Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
-        byValueField.setAccessible(true);
-        Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
-        lifecyclesField.setAccessible(true);
-        var toId = (Reference2IntMap<DimensionType>) toIdField.get(registry);
-        var byValue = (Map<DimensionType, Holder.Reference<DimensionType>>) byValueField.get(registry);
-        var lifecycles = (Map<DimensionType, Lifecycle>) lifecyclesField.get(registry);
+            valueField.set(holder, value);
+            toId.put(value, toId.removeInt(oldValue));
+            byValue.put(value, byValue.remove(oldValue));
+            lifecycles.put(value, lifecycles.remove(oldValue));
+            return true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
 
-        var newValue = DimensionType.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-        if (newValue == null)
-            throw new IllegalArgumentException("Failed to parse dimension type " + key.location() + " from " + file);
-
-        valueField.set(holder, newValue);
-        toId.put(newValue, toId.removeInt(oldValue));
-        byValue.put(newValue, byValue.remove(oldValue));
-        lifecycles.put(newValue, lifecycles.remove(oldValue));
+    private <T> MappedRegistry<T> registry(ResourceKey<Registry<T>> registryKey) {
+        var rawRegistry = registry().registry(registryKey).orElse(null);
+        if (!(rawRegistry instanceof MappedRegistry<T> registry))
+            throw new IllegalStateException("The Registry is not a mapped Registry!");
+        return registry;
     }
 
     private static String buildType(Class<?> clazz, String... parameterTypes) {
@@ -721,6 +769,13 @@ public class NMSBinding implements INMSBinding {
                     .visit(Advice.to(WorldCreatorAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(String.class))))
                     .make()
                     .load(WorldCreator.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
+            new ByteBuddy()
+                    .redefine(ServerLevel.class)
+                    .visit(Advice.to(ServerLevelAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(MinecraftServer.class, Executor.class, LevelStorageSource.LevelStorageAccess.class,
+                            PrimaryLevelData.class, ResourceKey.class, LevelStem.class, ChunkProgressListener.class, boolean.class, long.class,
+                            List.class, boolean.class, RandomSequences.class, World.Environment.class, ChunkGenerator.class, BiomeProvider.class))))
+                    .make()
+                    .load(ServerLevel.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
             Iris.info("Injected Bukkit Successfully!");
         } catch (Exception e) {
             Iris.info(C.RED + "Failed to Inject Bukkit!");
@@ -730,6 +785,21 @@ public class NMSBinding implements INMSBinding {
 
     }
 
+    private static class ServerLevelAdvice {
+        @Advice.OnMethodEnter
+        static void enter(@Advice.Argument(0) MinecraftServer server, @Advice.Argument(2) LevelStorageSource.LevelStorageAccess access, @Advice.Argument(4) ResourceKey<Level> key, @Advice.Argument(value = 5, readOnly = false) LevelStem levelStem) {
+            File iris = new File(access.levelDirectory.path().toFile(), "iris");
+            if (!iris.exists() && !key.location().getPath().startsWith("iris/")) return;
+            ResourceKey<DimensionType> typeKey = ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()));
+            RegistryAccess registryAccess = server.registryAccess();
+            Registry<DimensionType> registry = registryAccess.registry(Registries.DIMENSION_TYPE).orElse(null);
+            if (registry == null) throw new IllegalStateException("Unable to find registry for dimension type " + typeKey);
+            Holder<DimensionType> holder = registry.getHolder(typeKey).orElse(null);
+            if (holder == null) throw new IllegalStateException("Unable to find dimension type " + typeKey);
+            levelStem = new LevelStem(holder, levelStem.generator());
+        }
+    }
+
     private static class WorldCreatorAdvice {
         @Advice.OnMethodEnter
         static void enter(@Advice.Argument(0) String name) {
diff --git a/nms/v1_20_R3/src/main/java/com/volmit/iris/core/nms/v1_20_R3/NMSBinding.java b/nms/v1_20_R3/src/main/java/com/volmit/iris/core/nms/v1_20_R3/NMSBinding.java
index 14403b714..5f56f1299 100644
--- a/nms/v1_20_R3/src/main/java/com/volmit/iris/core/nms/v1_20_R3/NMSBinding.java
+++ b/nms/v1_20_R3/src/main/java/com/volmit/iris/core/nms/v1_20_R3/NMSBinding.java
@@ -6,16 +6,22 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FilenameFilter;
+import java.io.IOException;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.*;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 
 import com.google.common.base.Preconditions;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
 import com.mojang.datafixers.util.Pair;
+import com.mojang.serialization.Codec;
 import com.mojang.serialization.JsonOps;
 import com.mojang.serialization.Lifecycle;
+import com.volmit.iris.engine.object.IrisDimension;
 import com.volmit.iris.util.format.C;
 import com.volmit.iris.util.io.IO;
 import it.unimi.dsi.fastutil.objects.Reference2IntMap;
@@ -23,10 +29,17 @@ import net.bytebuddy.ByteBuddy;
 import net.bytebuddy.asm.Advice;
 import net.bytebuddy.dynamic.loading.ClassReloadingStrategy;
 import net.bytebuddy.matcher.ElementMatchers;
+import net.minecraft.core.IdMapper;
 import net.minecraft.core.MappedRegistry;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.GsonHelper;
+import net.minecraft.world.RandomSequences;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.dimension.DimensionType;
+import net.minecraft.world.level.dimension.LevelStem;
+import net.minecraft.world.level.storage.LevelStorageSource;
+import net.minecraft.world.level.storage.PrimaryLevelData;
 import org.bukkit.*;
 import org.bukkit.block.Biome;
 import org.bukkit.block.data.BlockData;
@@ -40,6 +53,7 @@ import org.bukkit.craftbukkit.v1_20_R3.util.CraftNamespacedKey;
 import org.bukkit.entity.Dolphin;
 import org.bukkit.entity.Entity;
 import org.bukkit.event.entity.CreatureSpawnEvent;
+import org.bukkit.generator.BiomeProvider;
 import org.bukkit.generator.ChunkGenerator;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -445,13 +459,13 @@ public class NMSBinding implements INMSBinding {
     @Override
     public MCAPaletteAccess createPalette() {
         MCAIdMapper<BlockState> registry = registryCache.aquireNasty(() -> {
-            Field cf = net.minecraft.core.IdMapper.class.getDeclaredField("tToId");
-            Field df = net.minecraft.core.IdMapper.class.getDeclaredField("idToT");
-            Field bf = net.minecraft.core.IdMapper.class.getDeclaredField("nextId");
+            Field cf = IdMapper.class.getDeclaredField("tToId");
+            Field df = IdMapper.class.getDeclaredField("idToT");
+            Field bf = IdMapper.class.getDeclaredField("nextId");
             cf.setAccessible(true);
             df.setAccessible(true);
             bf.setAccessible(true);
-            net.minecraft.core.IdMapper<BlockState> blockData = Block.BLOCK_STATE_REGISTRY;
+            IdMapper<BlockState> blockData = Block.BLOCK_STATE_REGISTRY;
             int b = bf.getInt(blockData);
             Object2IntMap<BlockState> c = (Object2IntMap<BlockState>) cf.get(blockData);
             List<BlockState> d = (List<BlockState>) df.get(blockData);
@@ -551,25 +565,34 @@ public class NMSBinding implements INMSBinding {
     }
 
     @Override
-    public boolean loadDatapack(File folder) {
+    public boolean registerDimension(String name, IrisDimension dimension) {
+        var registry = registry(Registries.DIMENSION_TYPE);
+        var baseLocation = switch (dimension.getEnvironment()) {
+            case NORMAL -> new ResourceLocation("minecraft", "overworld");
+            case NETHER -> new ResourceLocation("minecraft", "the_nether");
+            case THE_END -> new ResourceLocation("minecraft", "the_end");
+            case CUSTOM -> throw new IllegalArgumentException("Cannot register custom dimension");
+        };
+        var base = registry.getHolder(ResourceKey.create(Registries.DIMENSION_TYPE, baseLocation)).orElse(null);
+        if (base == null) return false;
+        var json = encode(DimensionType.CODEC, base).orElse(null);
+        if (json == null) return false;
+        var object = json.getAsJsonObject();
+        var height = dimension.getDimensionHeight();
+        object.addProperty("min_y", height.getMin());
+        object.addProperty("height", height.getMax() - height.getMin());
+        object.addProperty("logical_height", dimension.getLogicalHeight());
+        var value = decode(DimensionType.CODEC, object.toString()).map(Holder::value).orElse(null);
+        if (value == null) return false;
+        return register(Registries.DIMENSION_TYPE, new ResourceLocation("iris", name), value, true);
+    }
+
+    @Override
+    public boolean loadDatapack(File folder, boolean replace) {
         var data = new File(folder, "iris/data");
         if (!data.exists() || !data.isDirectory()) return false;
         FilenameFilter jsonFilter = (dir, name) -> new File(dir, name).isFile() && name.toLowerCase().endsWith(".json");
 
-        var dimensionFolder = new File(data, "minecraft/dimension_type");
-        if (dimensionFolder.exists()) {
-            var files = dimensionFolder.listFiles(jsonFilter);
-            if (files != null) {
-                for (File file : files) {
-                    try {
-                        modifyDimension(file);
-                    } catch (Throwable e) {
-                        Iris.error("Unable to modify dimension!");
-                        e.printStackTrace();
-                    }
-                }
-            }
-        }
         var files = data.listFiles((dir, name) -> new File(dir, name).isDirectory());
         if (files == null) return false;
         for (File file : files) {
@@ -578,8 +601,26 @@ public class NMSBinding implements INMSBinding {
             var biomeFiles = biome.listFiles(jsonFilter);
             if (biomeFiles == null) continue;
             for (File biomeFile : biomeFiles) {
+                String json = null;
+                int tries = 10;
+                while (json == null && tries-- > 0) {
+                    try {
+                        json = IO.readAll(biomeFile);
+                    } catch (IOException e) {
+                        Iris.error("Failed to read biome " + file.getName() + ":" + biomeFile.getName() + " tries left: " + tries);
+                        if (tries == 0) {
+                            e.printStackTrace();
+                        }
+                        try {
+                            Thread.sleep(100);
+                        } catch (InterruptedException ignored) {}
+                    }
+                }
+                if (json == null) continue;
+
                 try {
-                    registerBiome(file.getName(), biomeFile);
+                    var value = decode(net.minecraft.world.level.biome.Biome.CODEC, json).map(Holder::value).orElse(null);
+                    register(Registries.BIOME, from(file.getName(), biomeFile), value, replace);
                 } catch (Throwable e) {
                     Iris.error("Failed to register biome " + file.getName() + ":" + biomeFile.getName());
                     e.printStackTrace();
@@ -594,75 +635,82 @@ public class NMSBinding implements INMSBinding {
         return new ResourceLocation(namespace, name.substring(0, name.lastIndexOf('.')));
     }
 
-    private void registerBiome(String namespace, File file) throws Throwable {
-        var rawRegistry = registry().registry(Registries.BIOME).orElse(null);
-        var key = ResourceKey.create(Registries.BIOME, from(namespace, file));
-        if (!(rawRegistry instanceof MappedRegistry<net.minecraft.world.level.biome.Biome> registry))
-            throw new IllegalStateException("The Biome Registry is not a mapped Registry!");
-        if (registry.containsKey(key)) return;
-        Field field = getField(MappedRegistry.class, boolean.class);
-        field.setAccessible(true);
-        boolean frozen = field.getBoolean(registry);
-        field.setBoolean(registry, false);
-        Field holdersField = null;
-        boolean holders = false;
-        for (Field f : MappedRegistry.class.getDeclaredFields()) {
-            if (!f.getGenericType().getTypeName().startsWith("java.util.Map<T, "))
-                continue;
-            holdersField = f;
-        }
-        if (holdersField != null) {
-            holdersField.setAccessible(true);
-            holders = holdersField.get(registry) == null;
-            if (holders) holdersField.set(registry, new IdentityHashMap<>());
-        }
+    private <T> Optional<T> decode(Codec<T> codec, String json) {
+        return codec.decode(JsonOps.INSTANCE, GsonHelper.parse(json)).get().left().map(Pair::getFirst);
+    }
 
+    private <T> Optional<JsonElement> encode(Codec<T> codec, T value) {
+        return codec.encode(value, JsonOps.INSTANCE, new JsonObject()).result();
+    }
+
+    private <T> boolean register(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value, boolean replace) {
+        Preconditions.checkArgument(registryKey != null, "The registry cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
         try {
-            var biome = net.minecraft.world.level.biome.Biome.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                    .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-            if (biome == null)
-                throw new IllegalStateException("Failed to decode biome " + file.getName());
-
-            registry.createIntrusiveHolder(biome);
-            registry.register(key, biome, Lifecycle.stable());
-        } finally {
-            field.setBoolean(registry, frozen);
-            if (holders) {
-                holdersField.set(registry, null);
+            if (registry.containsKey(key)) {
+                if (!replace) return false;
+                return replace(registryKey, location, value);
             }
+            Field field = getField(MappedRegistry.class, boolean.class);
+            field.setAccessible(true);
+            boolean frozen = field.getBoolean(registry);
+            field.setBoolean(registry, false);
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+
+            try {
+                var holder = registry.register(key, value, Lifecycle.stable());
+                if (frozen) valueField.set(holder, value);
+                return true;
+            } finally {
+                field.setBoolean(registry, frozen);
+            }
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
         }
     }
 
     @SuppressWarnings("unchecked")
-    private void modifyDimension(File file) throws Throwable {
-        var key = ResourceKey.create(Registries.DIMENSION_TYPE, from("minecraft", file));
-        var rawRegistry = registry().registry(Registries.DIMENSION_TYPE).orElse(null);
-        if (!(rawRegistry instanceof MappedRegistry<DimensionType> registry))
-            throw new IllegalStateException("The Dimension Registry is not a mapped Registry!");
+    private <T> boolean replace(ResourceKey<Registry<T>> registryKey, ResourceLocation location, T value) {
+        Preconditions.checkArgument(registryKey != null, "The registryKey cannot be null!");
+        Preconditions.checkArgument(location != null, "The location cannot be null!");
+        Preconditions.checkArgument(value != null, "The value cannot be null!");
+        var registry = registry(registryKey);
+        var key = ResourceKey.create(registryKey, location);
+        try {
+            var holder = registry.getHolder(key).orElse(null);
+            if (holder == null) return false;
+            var oldValue = holder.value();
+            Field valueField = getField(Holder.Reference.class, "T");
+            valueField.setAccessible(true);
+            Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
+            toIdField.setAccessible(true);
+            Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
+            byValueField.setAccessible(true);
+            Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
+            lifecyclesField.setAccessible(true);
+            var toId = (Reference2IntMap<T>) toIdField.get(registry);
+            var byValue = (Map<T, Holder.Reference<T>>) byValueField.get(registry);
+            var lifecycles = (Map<T, Lifecycle>) lifecyclesField.get(registry);
 
-        var holder = registry.getHolder(key).orElseThrow(() -> new IllegalStateException("Unknown dimension type: " + key));
-        var oldValue = holder.value();
-        Field valueField = getField(Holder.Reference.class, "T");
-        valueField.setAccessible(true);
-        Field toIdField = getField(MappedRegistry.class, buildType(Reference2IntMap.class, "T"));
-        toIdField.setAccessible(true);
-        Field byValueField = getField(MappedRegistry.class, buildType(Map.class, "T", buildType(Holder.Reference.class, "T")));
-        byValueField.setAccessible(true);
-        Field lifecyclesField = getField(MappedRegistry.class, buildType(Map.class, "T", Lifecycle.class.getName()));
-        lifecyclesField.setAccessible(true);
-        var toId = (Reference2IntMap<DimensionType>) toIdField.get(registry);
-        var byValue = (Map<DimensionType, Holder.Reference<DimensionType>>) byValueField.get(registry);
-        var lifecycles = (Map<DimensionType, Lifecycle>) lifecyclesField.get(registry);
+            valueField.set(holder, value);
+            toId.put(value, toId.removeInt(oldValue));
+            byValue.put(value, byValue.remove(oldValue));
+            lifecycles.put(value, lifecycles.remove(oldValue));
+            return true;
+        } catch (Throwable e) {
+            throw new IllegalStateException(e);
+        }
+    }
 
-        var newValue = DimensionType.CODEC.decode(JsonOps.INSTANCE, GsonHelper.parse(IO.readAll(file)))
-                .get().left().map(Pair::getFirst).map(Holder::value).orElse(null);
-        if (newValue == null)
-            throw new IllegalArgumentException("Failed to parse dimension type " + key.location() + " from " + file);
-
-        valueField.set(holder, newValue);
-        toId.put(newValue, toId.removeInt(oldValue));
-        byValue.put(newValue, byValue.remove(oldValue));
-        lifecycles.put(newValue, lifecycles.remove(oldValue));
+    private <T> MappedRegistry<T> registry(ResourceKey<Registry<T>> registryKey) {
+        var rawRegistry = registry().registry(registryKey).orElse(null);
+        if (!(rawRegistry instanceof MappedRegistry<T> registry))
+            throw new IllegalStateException("The Registry is not a mapped Registry!");
+        return registry;
     }
 
     private static String buildType(Class<?> clazz, String... parameterTypes) {
@@ -718,6 +766,13 @@ public class NMSBinding implements INMSBinding {
                     .visit(Advice.to(WorldCreatorAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(String.class))))
                     .make()
                     .load(WorldCreator.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
+            new ByteBuddy()
+                    .redefine(ServerLevel.class)
+                    .visit(Advice.to(ServerLevelAdvice.class).on(ElementMatchers.isConstructor().and(ElementMatchers.takesArguments(MinecraftServer.class, Executor.class, LevelStorageSource.LevelStorageAccess.class,
+                            PrimaryLevelData.class, ResourceKey.class, LevelStem.class, ChunkProgressListener.class, boolean.class, long.class,
+                            List.class, boolean.class, RandomSequences.class, World.Environment.class, ChunkGenerator.class, BiomeProvider.class))))
+                    .make()
+                    .load(ServerLevel.class.getClassLoader(), ClassReloadingStrategy.fromInstalledAgent());
             Iris.info("Injected Bukkit Successfully!");
         } catch (Exception e) {
             Iris.info(C.RED + "Failed to Inject Bukkit!");
@@ -727,6 +782,21 @@ public class NMSBinding implements INMSBinding {
 
     }
 
+    private static class ServerLevelAdvice {
+        @Advice.OnMethodEnter
+        static void enter(@Advice.Argument(0) MinecraftServer server, @Advice.Argument(2) LevelStorageSource.LevelStorageAccess access, @Advice.Argument(4) ResourceKey<Level> key, @Advice.Argument(value = 5, readOnly = false) LevelStem levelStem) {
+            File iris = new File(access.levelDirectory.path().toFile(), "iris");
+            if (!iris.exists() && !key.location().getPath().startsWith("iris/")) return;
+            ResourceKey<DimensionType> typeKey = ResourceKey.create(Registries.DIMENSION_TYPE, new ResourceLocation("iris", key.location().getPath()));
+            RegistryAccess registryAccess = server.registryAccess();
+            Registry<DimensionType> registry = registryAccess.registry(Registries.DIMENSION_TYPE).orElse(null);
+            if (registry == null) throw new IllegalStateException("Unable to find registry for dimension type " + typeKey);
+            Holder<DimensionType> holder = registry.getHolder(typeKey).orElse(null);
+            if (holder == null) throw new IllegalStateException("Unable to find dimension type " + typeKey);
+            levelStem = new LevelStem(holder, levelStem.generator());
+        }
+    }
+
     private static class WorldCreatorAdvice {
         @Advice.OnMethodEnter
         static void enter(@Advice.Argument(0) String name) {