Biome Rings
by yurius5641
Biome Rings lets a server owner place chosen biomes in concentric bands around the center of the overworld, using a JSON file for each ring.
What it does
Biome Rings controls how far from the world center each biome can generate. A JSON file lists the biomes to force into a given range of blocks from the center, with a minimum and a maximum distance for each entry. Each biome in the list also carries a pool weight, which sets how often it is chosen within its ring compared with the other entries.
The mod is server-side only, so players join without installing anything, and the server alone needs it. It has been tested on vanilla 1.21.1 only, and the author notes that compatibility with other custom biome or terrain generation mods is probably limited. The author plans further bugfixes, optimization and config file improvements, and states that additional features and compatibility work are welcome in forks or copies of the repository.
Installation requires Fabric. Files are published for Fabric only, for 1.21.1, with 1.0.0 as the latest file released on 2026-06-24. The code is open source under the MIT License.
Key features
Distance-based biome rings
Biomes can be forced to appear within a chosen range of blocks from the overworld center.
Minimum and maximum distances
Each entry in the list sets a minimum and a maximum distance, so bands of biomes can be placed in order from the center outward.
Weighted biome pools
A pool weight on each biome controls how often it is picked within its ring, so one biome can dominate a band.
Example config file
A sample config shows a ring of plains, then desert and badlands, then forest and dark forest, as a starting template.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners who want to control the layout of the overworld by distance from spawn, and who run vanilla 1.21.1 without many other terrain generation mods.
How it compares
Fairy Rings is server-side only, open source under the GNU General Public License v3.0 only, and published for Fabric across 1.20.1 – 1.21.5. NeoBiosphere is also server-side only and open source under the GNU General Public License v3.0 only, but it targets NeoForge for 1.21.1 instead of Fabric. Editable World Generation is client and server, not open source, and covers 1.20.1 – 26.3 on Fabric.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Biome Rings | Fabric | 1.21.1 | Server-side only | 2026-06-24 |
| Fairy Rings | Fabric | 1.20.1 – 1.21.5 | Server-side only | 2025-05-23 |
| NeoBiosphere | NeoForge | 1.21.1 | Server-side only | 2026-05-12 |
| Editable World Generation | Fabric | 1.20.1 – 26.3 | Client and server | 2026-09-28 |
Questions
Does Biome Rings need Fabric API?
Does Biome Rings have to be installed on the client?
Will Biome Rings work with other terrain generation mods?
In the catalog
Biome Rings is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
This mod aims to provide a json file to force the generation of a biome or a list of biomes in a specified range of the overworld center. Note that this mod was only tested in vanilla 1.21.1, and probably has little to no compatiblity with any other custom biomes/terrain generation mods.
Official listing
- Modrinth page
- modrinth.com/mod/biome-rings
- Owner
- yurius5641
- Published
- 2026-06-24
- Updated on Modrinth
- 2026-06-24
- Facts verified
- 2026-10-15