Biome Replacer Mod (1.21.11, 1.20.1) – Replaces One Biome with Another

When a world generates with the wrong biome layout, Biome Replacer Mod gives you a direct way to swap one biome for another without changing other parts of terrain generation. It is especially useful for adjusting datapack-based world generation, correcting biome distribution, and replacing vanilla or datapack biomes with modded ones through a simple configuration file. The mod works fully server-side, so the setup stays focused on the server environment.

Key Features

  • Replaces one biome with another through simple rules in biome-replacer.properties.
  • Uses a straightforward old_biome > new_biome format for configuration.
  • Changes biome selection without affecting other parts of terrain generation.
  • Useful for tweaking datapack-based generators when biome results need adjustment.
  • Works fully server-side for streamlined setup and management.
  • Supports replacing vanilla and datapack biomes with modded biomes.
  • Can be used alongside libraries such as TerraBlender or Biolith.

Screenshots

Biome Replacer Mod screenshot 1 showing mod in action
Biome Replacer Mod screenshot 2 showing mod in action
Biome Replacer Mod screenshot 3 showing mod in action
Biome Replacer Mod screenshot 4 showing mod in action

How to Install

  1. Choose the build that matches your Minecraft version and loader: NeoForge, Forge, Fabric, or Quilt.
  2. Install the required loader for your setup, and add Fabric API if you are using the Fabric version.
  3. Place the mod in your server or game mods folder.
  4. Open biome-replacer.properties in the configuration folder and add replacement rules in the format old_biome > new_biome.

Requirements

Requirement Details
Mod Loader NeoForge, Forge, Fabric, Quilt
Dependencies Minecraft Forge, Fabric API, Quilt Loader, NeoForge Installer
Minecraft Version 1.18.2, 1.19.2, 1.19.4, 1.20.6, 1.21, 1.21.1, 1.21.9, 1.21.10, 1.21.11

Pros & Cons

Pros

  • Simple configuration through a properties file.
  • Focused biome replacement without changing the rest of terrain generation.
  • Works on the server side, which keeps deployment straightforward.
  • Useful for vanilla, datapack, and modded biome setups.

Cons

  • Requires manual editing of the configuration file.
  • Feature set is narrowly focused on biome replacement rather than broader worldgen editing.
  • Loader and version choice must match the correct available build.

Download

Minecraft VersionLoaderDownload Links
Minecraft 1.18.2 → Minecraft 1.19.2
Forge
Minecraft 1.18.2 → Minecraft 1.19.2
Fabric
Minecraft 1.19.4 → Minecraft 1.20.6
Forge

Minecraft 1.19.4 → Minecraft 1.20.6
Fabric

For Minecraft 1.21.1, 1.21

For Minecraft 1.21.1, 1.21
Fabric

For Minecraft 1.21.x
NeoForge

For Minecraft 1.21.x
Fabric

For Minecraft 1.21.10, 1.21.9
NeoForge

For Minecraft 1.21.10, 1.21.9
Fabric

For Minecraft 1.21.11
NeoForge

For Minecraft 1.21.11
Fabric

Always download mods from official sources to stay safe.

What's New

  • Updated on 2026-01-12.
  • Latest listed change: unbroke the mod on NeoForge 1.21.11.
  • Modrinth page published on 2023-09-03.
  • Reported Modrinth downloads: 2,970,753.

FAQ

What does Biome Replacer Mod do in Minecraft?

It lets you replace one biome with another by adding rules to biome-replacer.properties. The goal is to adjust biome results without changing other parts of terrain generation.

Does Biome Replacer Mod work on the server side only?

Yes. Available information states that the mod works fully server-side, which makes it suitable for server-based world and biome setup changes.

Can this mod replace vanilla or datapack biomes with modded biomes?

Yes. The listed features explicitly say it can replace vanilla and datapack biomes with modded ones, and it is also described as safe to use alongside libraries like TerraBlender or Biolith.

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