Flat Biomes
by mrarielsl
Flat Biomes lets a flat world preset carry biomes, so the layers of a superflat world can be given a chosen biome.
What it does
The mod adds biomes to the vanilla flat world type. Normally a flat world is one biome throughout, but with this mod installed the layers that make up the flat terrain can be built inside a chosen biome, changing the surface and sky of the world without leaving the flat layout.
Three biome presets are included, and a player picks the one wanted when creating the world. The changes take effect on the server, so players who join a server running the mod need nothing extra. Flat Biomes is server-side only, runs on Forge and NeoForge, and has files for 1.20.1 and for 1.21.1 – 1.21.10, with 1.0.0 for 1.20.1 and 3.0.0 for 1.21.10 as the latest files. It is released under All rights reserved, so the code is not open source.
Key features
Biomes on flat worlds
Flat world generation gains biome support, so the flat layers sit inside a biome of the player's choice.
Three biome presets
Three presets are offered on world creation, each setting a different biome for the flat terrain.
Vanilla flat world type
The changes build on the standard flat world type, so no new world type has to be selected.
Compatibility
Latest build for each game version and loader.
1.21.x9 of 9 versions with builds
1.20.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Themed flat worlds
A builder who wants a flat creative world in a specific biome can pick a preset at creation time.
Server-run flat worlds
A server owner who runs a flat world can offer biome variants without asking players to install anything.
Who it’s for: Builders and server owners who create flat worlds and want the terrain to match a chosen biome.
How it compares
Flat Dimensions World Preset works on Fabric, Forge, NeoForge and Quilt for 26.2 – 26.3, is server required with an optional client, and is released under All rights reserved. Flat Dimensions is open source under the MIT License, covers 1.20 – 1.21.10 on the same four loaders, and is also server required with an optional client. Biome2 is server-side only, runs on Forge and NeoForge for 1.20.1 – 1.21.4, and is licensed under the Apache License 2.0.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Flat Biomes | Forge and NeoForge | 1.20.1 – 1.21.10 | Server-side only | 2025-12-06 |
| Flat Dimensions World Preset | Fabric, Forge, NeoForge and Quilt | 26.2 – 26.3 | Server required, client optional | 2026-09-15 |
| Flat Dimensions | Fabric, Forge, NeoForge and Quilt | 1.20 – 1.21.10 | Server required, client optional | 2025-10-17 |
| Biome2 | Forge and NeoForge | 1.20.1 – 1.21.4 | Server-side only | 2025-04-29 |
Questions
Which loaders does Flat Biomes support?
Does a player need Flat Biomes to join a server that runs it?
Which game versions have files?
In the catalog
Flat Biomes is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 15,569 mods support Minecraft 1.21.10.
More from mrarielsl
Similar mods
What the author says
This mod adds a way to enable biomes on vanilla flat worlds, which means you get to have biomes while also modifying the built in layer preset of vanilla minecraft. There are 3 biome presets, type the one you want here: (World -> Customize -> Presets)
Official listing
- Modrinth page
- modrinth.com/mod/flat-biomes
- Owner
- mrarielsl
- Published
- 2025-11-29
- Updated on Modrinth
- 2025-12-06
- Facts verified
- 2026-10-15