DatapacksJava
Chamber Extra Biomes
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
About
The Tricky Trial Update for Minecraft 1.21 introduced Trial Chambers. While these structures are intended to spawn in all Overworld biomes except the Deep Dark, some mod-added biomes lack support for them. This mod generates Trial Chambers in all biomes where Mineshafts generate, thereby reducing the number of mod-added biomes without Trial Chambers. They will not generate in biomes where Mineshafts do not generate, such as the Deep Dark or the Origin Series biome from Biomes O' Plenty.
Require MOD
Fabric requires the Fabric API only when loaded via Mod Loader.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Verified by MCModsHub
- Downloads as ChamberExtraBiomes-1.0.0.zip
- Download size: 5 KB
- Download link checked 28 Aug 2026 — working
These come from our own check of the pack file, not from the source page.