The Backrooms

The Backrooms

Adds the backrooms as new dimensions for you to explore

by
30.5K Downloads
datapackfabricforgeneoforgequiltadventureworldgen
Rent Server with this Mod

Screenshots

Level 46
Level 93
Level 7
Level 41
Level 221
Level 458

About this Mod

Important Info

You enter through by jumping into the void in any dimension.
Creating a testing world is recommended to prevent corruption
If you find a glow item frame item on the ground report it in the discord
that is a broken exit and needs to be fixed
If you want to see my progress and plans click here.

What this adds:

This datapack adds The Backrooms which has alot of exploration content
This also adds advancements for every single thing in the backrooms

Why should i use this?:

this adds more exploration content and prevents you from dying to The Void while still having a penalty for falling into The Void

other info/bug reporting:

Glow Item Frames indicate an exit so look for those.
The bedrock floor is replaced with obsidian in every level so you can use that to get to back Level 0
The discord has a bug report channel so go there and there are books in every level explaining all information you need to know about that level

dont send your issue in general and install the resource pack

Available Versions

The Backrooms 2.10.10release
MC 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, quilt
June 14, 2026
The Backrooms 2.10.10release
MC 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
June 14, 2026
Hotfix 24release
MC 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, quilt
June 4, 2026
Hotfix 24release
MC 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
June 4, 2026
Hotfix 23release
MC 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, quilt
May 24, 2026

How to Install The Backrooms on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set datapack Loader

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

3

Install Mod

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

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

26.1.2, 26.1.1, 26.1 (+8 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

The Backrooms 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 4 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 The Backrooms compatible with datapack and fabric and forge and neoforge and quilt?

The Backrooms officially supports datapack, fabric, forge, neoforge, quilt 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 The Backrooms – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if The Backrooms 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.

Rent Modded Server

Install The Backrooms with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

26.1.226.1.126.11.21.111.21.101.21.91.21.81.21.71.21.61.21.5+1 more