Editable World Generation Mod (26.3, 1.20.1) – Reshape Biomes Caves

Editable World Generation Mod adds a custom world type with an in-game rules editor for world creation. You can adjust terrain shape, cave sizes, biome settings, surface vegetation, ore deposits, and structures across the Overworld, Nether, and End. The mod provides a live seed preview window along with simple file import and export tools for your custom presets. It also includes an in-game editing mode where world generation values update chunks as you play.

Features:

• Adds a new Custom world type directly in the world creation menu.
• Customizes terrain heights, cave shapes, and underwater caverns.
• Controls biome frequency, foliage distribution, and surface decoration.
• Adjusts ore generation rates and structure spacing across all dimensions.
• Replaces or removes specific block types during world generation.
• Supports separate custom rules for the Overworld, Nether, and End.
• Generates a spinning 3D preview of a random seed to check your rules.
• Imports and exports generation presets through a dedicated settings folder.
• Lets you update world generation rules in real time while walking around in-game.

How to Use:

1. Click Create New World and switch the world type to Custom.
2. Click Edit rules to open the editor menu.
3. Choose categories like Terrain, Caves, Biomes, or Structures to tweak specific values.
4. Click Generate Preview to see how your rules generate a test landscape.
5. Click Open Settings Folder if you want to back up or load preset files.
6. Finish creating your world and explore your custom generation rules.

Screenshots:

Editable World Generation Mod Download Links