Editable World Generation
Editable World Generation lets a player open a custom world and change the rules that shape its terrain, biomes, caves and ores before the world is created.
What it does
Choosing the Custom world type and clicking Edit rules opens an editor. In it, a player changes the generation rules for the overworld, nether and end, then clicks Generate Preview to see a random seed built from those rules. Values update live in chunks as settings are chosen, so a change shows up without restarting the editor.
The mod covers most of Minecraft's world generation: terrain, caves, biomes, vegetation, ores, structures, features, and the removal or replacement of specific blocks during spawning. Since version 2.0.0 the settings apply to all three dimensions. The mod is client and server, so a multiplayer server and every player need the same copy installed. It is published for Fabric only, with files for 26.3 and earlier, and the latest Fabric file, mc26.3_v4.3.0, is dated 2026-09-28. It is released under All rights reserved and is not open source.
Key features
Custom world type
Adds a new world type that players can create and reshape with their own generation rules.
Rule editor
A full interface lists the terrain, cave, biome, vegetation, ore, structure and feature settings in one place.
Live previews
Generate Preview builds a sample world from a random seed, using the rules set in the editor.
Block replacement
Specific blocks can be replaced or removed during spawning, in addition to the other generation settings.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x3 of 3 versions with builds
1.20.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want to design the terrain and resources of a new world, and server owners who want a generation style that differs from vanilla.
How it compares
OmniIsle is open source under the GNU General Public License v3.0 only, runs on Fabric and NeoForge for 1.20.1 – 26.2, and is server required with an optional client. Biome Rings is open source under the MIT License, supports only 1.21.1 on Fabric, and is server-side only, so players join without it. Editable World Generation is client and server, Fabric only, and is All rights reserved. Better Underground Caves is All rights reserved and not open source, with Fabric, Forge, NeoForge and Quilt files for 1.19.2 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Editable World Generation | Fabric | 1.20.1 – 26.3 | Client and server | 2026-09-28 |
| OmniIsle | Fabric and NeoForge | 1.20.1 – 26.2 | Server required, client optional | 2026-08-19 |
| Biome Rings | Fabric | 1.21.1 | Server-side only | 2026-06-24 |
| Better Underground Caves | Fabric, Forge, NeoForge and Quilt | 1.19.2 – 1.21.11 | Server required, client optional | 2026-03-03 |
Questions
Does Editable World Generation need to be installed on the server?
Where are the generation rules changed?
In the catalog
Editable World Generation is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
This mod allows you to edit almost every rule of Minecraft's world generation. From biomes, to structures, to terrain & caves to even surface decoration. More versions soon! Working on the 26.3 port. Start by selecting the "Custom" world type and then click "Edit rules"
Official listing
- Modrinth page
- modrinth.com/mod/editable-world-generation
- Owner
- OrangehCastle
- Published
- 2026-08-13
- Updated on Modrinth
- 2026-09-28
- Facts verified
- 2026-10-15