diff --git a/biomes/frozen/beach.json b/biomes/frozen/beach.json
index 14bc6657..6a2f1391 100644
--- a/biomes/frozen/beach.json
+++ b/biomes/frozen/beach.json
@@ -39,20 +39,6 @@
         "minSpawns": 1,
         "rarity": 6
     }],
-    "jigsawStructures": [
-        {
-            "rarity": 1700,
-            "structure": "igloo"
-        },
-        {
-            "rarity": 1700,
-            "structure": "pillager"
-        },
-        {
-            "rarity": 1500,
-            "structure": "village-snowy"
-        }
-    ],
     "objects": [
         {
             "chance": 0.01,
diff --git a/biomes/hot/desert-dunes-red.json b/biomes/hot/desert-dunes-red.json
index ec72ac81..97e55995 100644
--- a/biomes/hot/desert-dunes-red.json
+++ b/biomes/hot/desert-dunes-red.json
@@ -4,8 +4,8 @@
     "vanillaDerivative": "DESERT",
     "generators": [{
         "generator": "smooth-dunes",
-        "max": 20,
-        "min": 5
+        "max": 23,
+        "min": 10
     }],
     "layers": [
         {
diff --git a/biomes/hot/desert-dunes.json b/biomes/hot/desert-dunes.json
index 5aeaf7c1..a321a180 100644
--- a/biomes/hot/desert-dunes.json
+++ b/biomes/hot/desert-dunes.json
@@ -5,8 +5,8 @@
     "children": ["hot/oasis"],
     "generators": [{
         "generator": "smooth-dunes",
-        "max": 20,
-        "min": 5
+        "max": 23,
+        "min": 10
     }],
     "layers": [
         {
diff --git a/biomes/hot/desert-red.json b/biomes/hot/desert-red.json
index 2f0b9a78..5e80b57d 100644
--- a/biomes/hot/desert-red.json
+++ b/biomes/hot/desert-red.json
@@ -5,8 +5,8 @@
     "children": ["hot/desert-dunes-red"],
     "generators": [{
         "generator": "smooth-dunes",
-        "max": 20,
-        "min": 5
+        "max": 23,
+        "min": 10
     }],
     "layers": [{
         "style": {"style": "FRACTAL_WATER"},
diff --git a/biomes/hot/desert.json b/biomes/hot/desert.json
index 6d9647b3..8ff8fc7e 100644
--- a/biomes/hot/desert.json
+++ b/biomes/hot/desert.json
@@ -5,8 +5,8 @@
     "children": ["hot/desert-dunes"],
     "generators": [{
         "generator": "smooth-dunes",
-        "max": 20,
-        "min": 5
+        "max": 23,
+        "min": 10
     }],
     "layers": [
         {
diff --git a/biomes/hot/ocean-cliffs.json b/biomes/hot/ocean-cliffs.json
index b61d2ff5..6fd9a934 100644
--- a/biomes/hot/ocean-cliffs.json
+++ b/biomes/hot/ocean-cliffs.json
@@ -11,7 +11,8 @@
         {
             "minHeight": 2,
             "maxHeight": 3,
-            "style": {"style": "STATIC"},
+            "style": {"style": "VASCULAR"},
+            "zoom": 0.5,
             "palette": [
                 {"block": "sand"},
                 {"block": "clay"},
diff --git a/biomes/hot/ocean.json b/biomes/hot/ocean.json
index cf8e6b0a..967f3523 100644
--- a/biomes/hot/ocean.json
+++ b/biomes/hot/ocean.json
@@ -16,8 +16,8 @@
         {
             "minHeight": 2,
             "maxHeight": 3,
-            "style": {"style": "STATIC"},
-            "zoom": 0.825,
+            "style": {"style": "VASCULAR"},
+            "zoom": 0.5,
             "palette": [
                 {"block": "sand"},
                 {"block": "clay"},
diff --git a/biomes/hot/river.json b/biomes/hot/river.json
index 69155eea..cbf437b1 100644
--- a/biomes/hot/river.json
+++ b/biomes/hot/river.json
@@ -9,11 +9,21 @@
     }],
     "layers": [
         {
-            "style": {"style": "FRACTAL_WATER"},
-            "zoom": 0.5,
+            "minHeight": 2,
+            "maxHeight": 3,
+            "style": {"style": "VASCULAR"},
+            "zoom": 0.2,
             "palette": [
                 {"block": "sand"},
-                {"block": "sandstone"}
+                {"block": "clay"},
+                {"block": "sand"},
+                {"block": "gravel"},
+                {"block": "sand"},
+                {"block": "dirt"},
+                {
+                    "weight": 2,
+                    "block": "sand"
+                }
             ]
         },
         {
diff --git a/biomes/swamp/beach.json b/biomes/swamp/beach.json
index f2bbaaa3..d5fa2e2d 100644
--- a/biomes/swamp/beach.json
+++ b/biomes/swamp/beach.json
@@ -3,7 +3,7 @@
     "derivative": "SWAMP",
     "vanillaDerivative": "BEACH",
     "generators": [{
-        "min": 0,
+        "min": 1,
         "max": 3,
         "generator": "plain"
     }],
diff --git a/biomes/swamp/marsh.json b/biomes/swamp/marsh.json
index 43e6017c..a0c5a0c3 100644
--- a/biomes/swamp/marsh.json
+++ b/biomes/swamp/marsh.json
@@ -8,16 +8,6 @@
         "max": 6,
         "generator": "mountain"
     }],
-    "jigsawStructures": [
-        {
-            "rarity": 1700,
-            "structure": "pillager"
-        },
-        {
-            "rarity": 1000,
-            "structure": "village-tundra"
-        }
-    ],
     "layers": [
         {
             "style": {"style": "IRIS"},
diff --git a/biomes/swamp/ocean.json b/biomes/swamp/ocean.json
index 8874b8ba..07a3cae7 100644
--- a/biomes/swamp/ocean.json
+++ b/biomes/swamp/ocean.json
@@ -3,8 +3,8 @@
     "derivative": "SWAMP",
     "vanillaDerivative": "OCEAN",
     "generators": [{
-        "min": -2,
-        "max": 0,
+        "min": -8,
+        "max": -3,
         "generator": "river"
     }],
     "layers": [
@@ -15,7 +15,6 @@
                 "style": "VASCULAR",
                 "zoom": 0.8,
                 "fracture": {
-                    "multiplier": 2,
                     "style": "STATIC"
                 }
             },
diff --git a/dimensions/overworld.json b/dimensions/overworld.json
index 13683eaa..76743306 100644
--- a/dimensions/overworld.json
+++ b/dimensions/overworld.json
@@ -43,6 +43,10 @@
             }
         }
     },
+    "islandBiomeChanceStyle": {
+        "style": "FRACTAL_FBM_IRIS",
+        "zoom": 5
+    },
     "SEAS": "Sea settings (for the biomes that are oceans).",
     "seaZoom": 1.25,
     "seaBiomeStyle": {"style": "FRACTAL_FBM_IRIS"},
@@ -270,7 +274,7 @@
         }
     ],
     "caveBiomeStyle": {"style": "CELLULAR_IRIS_DOUBLE"},
-    "CARVING": "Carving layers that cut off certain parts of the world",
+    "CAVERNS//CARVING": "Carving layers that cut off certain parts of the world",
     "carving": true,
     "carveLayers": [
         {
@@ -283,8 +287,8 @@
                     "zoom": 0.5
                 }
             },
-            "fullPercent": 0.01,
-            "threshold": 0.75,
+            "fullPercent": 0.007,
+            "threshold": 0.8,
             "minHeight": -40,
             "maxHeight": 100
         },