Flat Biomes
Adds biomes to vanilla flat world type
About this Mod
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)
The presets are:
- flatbiomes:overworld
- flatbiomes:nether
- flatbiomes:end
Available Versions
How to Install Flat Biomes on Your Server
Order Server
Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.10).
Install Mod
Open the mod browser in the dashboard and search for "Flat Biomes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.10, 1.21.9, 1.21.8 (+7 more)
Server-side
✓ RequiredRecommended RAM
6 GB(min. 4 GB)Frequently Asked Questions
Flat Biomes server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.
Is Flat Biomes compatible with forge and neoforge?
Flat Biomes officially supports forge, neoforge for Minecraft 1.21.10, 1.21.9, 1.21.8. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Flat Biomes – how to optimize performance?
Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Flat Biomes consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
Similar Mods
Rent Modded Server
Install Flat Biomes with just one click on your server.