

This mod makes it so that the entire Overworld is replaced with a randomly generated maze of Trial Chambers. Be careful not to get lost! (Hint: You can't avoid getting lost. It's inevitable.)
Chests with loot can occasionally be found around the world, giving you wood and pickaxes. In addition, large rooms (like the Atrium or Chamber 4) generate randomly. Good luck!
Overworld Generation DetailsEvery structure that can generate in the Overworld is an edited version of one of the vanilla Trial Chambers rooms or structures. In addition to corridors, these rooms can spawn:
- Atrium
- In this room, the reliefs on the sides were removed, and the structure was made less tall by removing the walkways and vault at the top.
- Chamber 4
- In this room, the walkways have been shifted to account for the opening positions. In addition, several new openings were added.
- Slanted
- This room was barely edited (from a version I found in my world), except for the entrances being fixed.
All of these structures were built myself after looking at a real fortress. There are many inaccuracies compared to real fortresses, but that's probably okay. Right?
In addition to open and closed corridors, these rooms can spawn:
- Lava intersection (with one square of lava in the middle). This room was not modified.
- Staircase with nether wart. This room was significantly compressed side-to-side to prevent it from being ridiculously large.
Open corridors can contain blaze spawners and closed corridors can contain chests (with loot identical to vanilla fortress loot).
NOTE: This mod is not finished! The End is not modified, and some more Trial Chambers rooms will be added soon.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- 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 — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as chamberworld-1.3.44.jar — drop this file into the mods folder
- Download size: 105 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.