
Modrinth · Minecraft mod
Superflat Biome Extension
Adds a flat world type with regular biome distribution.
Quick answer
Which Superflat Biome Extension release should I use?
Superflat Biome Extension 0.2-beta-26.2-fabric targets 26.2 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Superflat Biome Extension required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Superflat Biome Extension 0.2-beta-26.2-fabric need?
0.2-beta-26.2-fabric. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Superflat Biome Extension without breaking your instance.
Built for Superflat Biome Extension 0.2-beta-26.2-fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 0.2-beta-26.2-fabric. It targets 26.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 0.2-beta-26.2-fabric. It opens that exact file at the source.
About this project
What does Superflat Biome Extension add?
Make superflat worlds but with all biomes available.
Screenshots


To use this mod world gen select the Superflat Biome Extension world type in the world creation screen:
World creation

Several customization option are available:
- Surface fluid: makes a layer of fluid generate on the surface, like water for ocean/rivers and lava lakes in the nether.
- Features:
-- Vegetation: trees, grass, vines, sculk, etc.
-- Terrain: icebergs, ice spikes, basalt pillars, etc.
-- Lakes: lava lakes
-- Ores: iron, coal, diamond, diorite, andesite, gravel, nether quartz, etc.
-- Misc: amethyst geodes, desert wells, fossils, etc.
Each feature category can be disabled individually. Feature categories can also be customized using tags (look at the mod json files for examples).
Know issues:
-(Fixed in 0.2-beta) Ocean monuments generation is inconsistent, sometimes monuments generate at the incorrect height or place their bounding box incorrectly
Planned features:
-(Added in 0.2-beta) Add flat nether and end dimension
This mod is not guaranteed to work with other mods that add custom biomes, structures or dimensions. It shouldn't crash, but biomes or structures added by other mods may generate incorrectly or not generate at all.
For any problem or suggestion open an issue on github.
Project description from Modrinth.
Pick your setup
Superflat Biome Extension by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Superflat Biome Extension versions and loaders
0.2-beta-26.2-fabric
superflatbiomeextension-0.2-beta-26.2-fabric.jar
1 Sept 2026
1.0.0-beta-1-26.2-fabric
superflatbiomeextension-1.0.0-beta-1-26.2-fabric.jar
11 Aug 2026
1.0.0-beta-1-fabric
superflatbiomeextension-1.0.0-beta-1-1.21.6-fabric.jar
19 Jun 2025
Looking for an older file? The official Modrinth project page is in Resources.