World Gen Tweaker
Minecraft Java mod. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeWorld Gen Tweaker
World Gen Tweaker allows users to modify vanilla and mod biomes through a simple scripting language. You can change biome height, hilliness, temperature, rainfall, water color, water fog color, and fog color. Eventually you will be able to create new biomes through the scripting language alone.
Examples


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- Edition: Minecraft Java
- File type: .jar
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as worldgentweaker-0.1.0.jar — drop this file into the mods folder
- Download size: 1.0 MB
- Download link checked 24 Sept 2026 — working
These come from our own check of the pack file, not from the source page.