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Biolith

A biome placement mod focusing on configurability and consistent distribution of modded biomes

by Prospector· gniftygnome, TerraformersLibraryWorld generation
FabricNeoForgeForgeQuilt
Loaders
FabricNeoForgeForgeQuilt
Downloads on Modrinth
1.8M
Followers on Modrinth
280
versions
350
Updated
October 24, 2026Oct 24
Published
in 2023
This is a library — other mods need it, and it adds nothing to the game by itselfRequired by 16 mods. Download it if another mod needs it.
Mixed Placement — Biolith's multi-octave open simplex biome replacement noise provides more immersive biome placement when multiple mods replace the same biome. · swipe

At a glance

A library: other mods need it — required by 16 mods
Runs on Fabric, NeoForge, Forge and Quilt
For Minecraft 1.19.4–26.3
Server only — players don't need to install it
Latest version — 3.9.0-alpha.4 from October 24, 2026
License LGPL-3.0-only — free
Where it's needed
In gamenot neededOn serverrequired

Install on the server only; players don't need it

Game versions1.19.4–26.3

Biolith

Biolith is a biome placement and world surface generation server library mod focusing on configurability and consistent, immersive distribution of modded biomes. Fabric, Forge, NeoForge, and Quilt loaders are presently supported. You can see Biolith in action by trying out the Terraformers biome mods listed below:

Extent of Current Features

At this time, aside from any new things I've implemented and forgotten to update here, the following features are present:

  • From v1.2.0-alpha.1, Biolith supports all four major mod loaders!
  • From v2.0.0-alpha.1, biome placement and surface rules can be added via datapacks.
  • Place an Overworld, Nether, or End biome at a specified noise point.
  • Remove a vanilla/datapack Overworld, Nether, or End biome from all noise points.
  • Replace an Overworld, Nether, or End biome entirely or in part.
  • Add a sub-biome to an Overworld, Nether, End, or modded biome.

    • (End biome placement uses custom noise and is only available in 1.20+.)

  • Register custom surface rules.
  • Override vanilla surfaces using custom surface builders.

  • Fully compatible with TerraBlender and Fabric Biome API biomes.
  • Somewhat compatible with BClib (biome placement will be modified by BClib).
  • Can place biomes in Modern Beta worlds in 1.2.0-beta.1 (1.20.4 - 1.20.6).
  • Can place biomes in Moderner Beta worlds since 3.0.3 (1.21+).
  • Automatically prevents feature order cycle crashes since 3.0.5.

FAQ

How to install Biolith?

Install Fabric for your Minecraft version, download Biolith for the same version and loader, put the file into the mods folder and launch the game with the loader profile.

Which Minecraft versions does Biolith support?

Biolith has builds for Minecraft 1.19.4–26.3.

Is Biolith needed on the server?

Server only — players don't need to install it

License and source
GNU Lesser General Public License v3.0 onlyfree to use and share; changes to the mod itself must be published under the same license
Original — Modrinth↗Files unchanged, verified with SHA-512Is this your mod? For rights holders

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