Random chunks
by jasiek
Random chunks is a Fabric world generation mod that adds a world type made of randomized chunks, usable in the Overworld, Nether and End.
What it does
A new world type is available during world creation. Worlds made with it are built from randomly generated chunks, and the generation type can be configured for each dimension when the world is created. The Overworld, Nether and End all follow that setting, and the game remains beatable on this world type.
Because the new chunks are generated more slowly than vanilla terrain, exploration of a Random chunks world takes longer to load. Installation is needed on the server only, so players join without adding anything. The latest Fabric file is 1.0.0 for 1.21.11, and files cover 1.21 – 1.21.11 across 12 release versions under the MIT License, which is not open source.
Key features
Random chunk world type
A world type that builds terrain from randomized chunks, selectable when a new world is created.
Configurable dimensions
Generation for the Overworld, Nether and End is set during world creation.
Beatable worlds
The game can still be completed on a world made with this generation type.
Slower chunk generation
New chunks take longer to generate than in vanilla world generation, so travel into unexplored areas is slower.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Unusual survival worlds
Players who want a world that departs from vanilla terrain can pick the new type when creating a world.
Who it’s for: Players who want an unpredictable world from the first chunk, and server owners who add a non-standard world type to a server.
How it compares
Random Block World is server-side only and released under the MIT License, with files for 1.21.10 – 1.21.11, so it works on the same server environment as this mod. Every Random Chunk is server-side only under the MIT License, with files for 1.21.11 only. ChunkMix is for 1.21.1 and needs the client, with the server optional, under a Creative Commons license that forbids commercial use and derivatives.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Random chunks | Fabric | 1.21 – 1.21.11 | Server-side only | 2026-02-08 |
| Random Block World | Fabric | 1.21.10 – 1.21.11 | Server-side only | 2026-01-29 |
| Every Random Chunk | Fabric | 1.21.11 | Server-side only | 2026-07-06 |
| ChunkMix | Fabric | 1.21.1 | Client required, server optional | 2026-04-29 |
Questions
Does Random chunks need to be installed on the client?
Which Minecraft versions does Random chunks support?
Can the Nether and End use the random generation too?
In the catalog
Random chunks is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from jasiek
Similar mods
What the author says
This mod adds a new world generation type that creates worlds made of randomized chunks.
Official listing
- Modrinth page
- modrinth.com/mod/randomchunks
- Owner
- jasiek
- Published
- 2026-02-08
- Updated on Modrinth
- 2026-02-08
- Facts verified
- 2026-10-15