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Biome Sizes Mod for Minecraft 1.20.1, 26.2

Customize Biome Size settings per dimension

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Updated 18.10.2026

Biome Sizes allows you to adjust worldgen settings for biome size per dimension with a simple to use config.

  • Dimension specific settings

No known incompatibilities, should work with any other mods which respect worldgen datapack settings.

How to install Biome Sizes

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.20.1–26.2 on Fabric, Forge or NeoForge automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Install Fabric, Forge or NeoForge

    The loader must match the game version of the mod file, for example Minecraft 26.2. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file biomesize-fabric-26.1-1.6.jar (10 KB) for your game version and loader.

  3. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  4. Launch the loader profile

    Open “Mods” in the main menu: Biome Sizes should be in the list.

Versions

With dependencies

MinecraftLoaderFileDateActions
26.1Fabricbiomesize-fabric-26.1-1.6.jar9.7 KB
26.1NeoForgebiomesize-26.1-1.6.jar10.1 KB
1.20.1Forge, NeoForgebiomesize-1.20.1-1.6.jar12.6 KB

FAQ

Which Minecraft versions does Biome Sizes work on?

There are files for 26.2, 26.1.2, 26.1.1, 26.1, 1.20.1. The newest is 26.2.

Is Biome Sizes for Forge or Fabric?

There are files for Fabric: 26.1–26.2, for Forge: 1.20.1 and for NeoForge: 1.20.1–26.2.

Does Biome Sizes need other mods?

The author lists no required dependencies: the Fabric, Forge or NeoForge loader is enough.

Where can I download Biome Sizes safely?

On this page: the file biomesize-fabric-26.1-1.6.jar (10 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: ef856b4e847c65d85c4e572ecfcd8d765a697fdc.

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