ModsJava
The Backrooms: Beta Release
Java mod listed for Minecraft 1.21. File opened and checked on 10 Oct 2026; downloads from the MC Java Mods app on Android.
⬇ Download on Modrinth
The Backrooms in Minecraft 1.21.11
Suffocate yourself to go to the Backrooms!
Disclaimer: This mod is still in-dev so this might not work on every setup and device.
Credits:
Enveil: Created the player worn hazmat skin.
Quick facts
- 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.
File checked by MCModsHub
- Ships as backrooms-1.21.11-1.8.2.jar — drop this file into the mods folder
- Download size: 3.5 MB
- Download link checked 21 Oct 2026 — working
These come from our own check of the pack file, not from the source page.