Biome ID Extender
by TCLProject
Biome ID Extender raises the biome ID limit of Minecraft Forge 1.7.10 so that a world can hold more than 256 biomes.
What it does
By default the 1.7.10 engine stores biome IDs in a single byte, which caps the total at 256 biomes. This Forge mod lifts that cap so mods that add many biomes can coexist in one game. The author estimates the usable range at around 50,000 IDs, and notes that keeping IDs below 65,536 is plenty for any realistic modpack.
The mod is aimed at worlds that combine large biome packs. Its notes name Biomes O' Plenty, Ridiculous World, Alternate Terrain Generation and Realistic Terrain Generation as examples that work with it, with small issues such as glass blocks generating sky under Alternate Terrain Generation and a known F3 bug where some biome names display wrong. The author calls the project a work in progress and advises against using it for worlds that matter. The client and server must both run it, since it does not change generation logic, and a world created with it will not load without it installed.
Key features
Extended biome ID range
Allows more than 256 biomes in a single 1.7.10 game, the main purpose of the mod.
Known biome name bug
Some biomes display the wrong name in the F3 debug screen, a bug the author has recorded.
Dependency on the mod
Worlds created with the mod break if it is removed, so it must stay installed for those saves.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Highlands Integrator is a Forge 1.7.10 mod for client and server under the BSD 3-Clause License, and it is open source. No Leaf Decay is also a Forge 1.7.10 mod for client and server, released under the MIT License and open source. Small Biomes covers Fabric, Forge, NeoForge and Quilt for 1.21.4, is server required with optional client use, and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Biome ID Extender | Forge | 1.7.10 | Client and server | 2022-05-21 |
| Highlands Integrator | Forge | 1.7.10 | Client and server | 2026-03-25 |
| No Leaf Decay | Forge | 1.7.10 | Client and server | 2022-09-02 |
| Small Biomes | Fabric, Forge, NeoForge and Quilt | 1.21.4 | Server required, client optional | 2025-01-14 |
Questions
Does Biome ID Extender work on newer Minecraft versions?
Do players need the mod to join a server running it?
Will the mod generate new biomes by itself?
In the catalog
Biome ID Extender is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 1,013 mods support Minecraft 1.7.10.
More from TCLProject
Similar mods
What the author says
This mod is still a big work-in-progress, do not use on worlds you actually care about. Worlds created with Biome ID Extender will be incompatible and break without it installed.
Official listing
- Modrinth page
- modrinth.com/mod/biomeidextender
- Owner
- TCLProject
- Published
- 2022-05-21
- Updated on Modrinth
- 2022-05-21
- Facts verified
- 2026-10-15
