Chamber Extra Biomes

Enable Trial Chambers to spawn in biomes added by mods

5.7K Downloads

datapackfabricforgeneoforgeadventure

Rent Server with this Mod

About this Mod

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.

Available Versions

Chamber Extra Biomes DPrelease

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2datapack

September 25, 2025

Chamber Extra Biomesrelease

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1, 26.1.1, 26.1.2fabric, forge, neoforge

September 25, 2025

How to Install Chamber Extra Biomes on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (26.1.2).

Install Mod

Open the mod browser in the dashboard and search for "Chamber Extra Biomes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforge

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+12 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Chamber Extra Biomes server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1.2). You can switch loaders with one click in the panel.

Is Chamber Extra Biomes compatible with datapack and fabric and forge and neoforge?

Chamber Extra Biomes officially supports datapack, fabric, forge, neoforge for Minecraft 26.1.2, 26.1.1, 26.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Chamber Extra Biomes – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Chamber Extra Biomes consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.