Backrooms
by lullaby
Backrooms is a world generation mod for Fabric, Forge, NeoForge and Quilt that adds an endless yellow maze of level 0 to the world, reached only through lonely doors.
What it does
Backrooms adds a dimension of endless, unsettling corridors, empty hallways and abandoned rooms built around the liminal spaces of the Backrooms idea. Hostile creatures lurk in the darkness, and a player who stops moving or turns the wrong way can be hunted down. The only way into and out of the Backrooms is through doors scattered through the world, and some of them lead to an endless nightmare while others are the only chance to escape.
The mod is open source under the GNU Affero General Public License v3.0 or later, and its source code is public. Files target the game versions 1.21 – 26.3, with seven release versions in total: 1.21, 1.21.1, 26.1, 26.1.1, 26.1.2, 26.2 and 26.3. The server needs the mod, while a client can join without it. Builds for every listed loader are dated 2026-10-07 for version 1.1.1 on 26.3.
Key features
Endless yellow maze
The current release contains only Level 0, the iconic endless yellow maze, with its hallways and silent rooms.
Hostile creatures
Creatures hide in the darkness of the maze and hunt down players who stop or wander too far.
Doors as the only exit
Lonely doors scattered through the world are the only way into and out of the Backrooms.
Suffocate enchantment
A rare chest can hold an exclusive Suffocate enchantment for axes and maces, which forces a struck mob to the ground until it escapes or dies.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Loot in the maze
Loot chests in the Backrooms hold treasures also found in Ancient Cities, Mineshafts and End Cities.
Who it’s for: Players who want a horror exploration experience in a survival world or on a server. Server owners need to install the mod, since creating a server of their own is a lengthy, costly process that the author describes as tedious.
How it compares
Blackrooms Horror is a server-side option for Fabric, Forge, NeoForge and Quilt covering 1.21.8 – 26.2, under All rights reserved. backroom building blocks targets NeoForge only, for 1.21.1, with the same client and server environment as Backrooms but with no open source license. liminalness is open source under the MIT License, targets NeoForge for 1.21.1 and is server-side only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Backrooms | Fabric, Forge, NeoForge and Quilt | 1.21 – 26.3 | Server required, client optional | 2026-10-07 |
| Blackrooms Horror | Fabric, Forge, NeoForge and Quilt | 1.21.8 – 26.2 | Server required, client optional | 2026-09-28 |
| backroom building blocks | NeoForge | 1.21.1 | Client and server | 2026-06-24 |
| liminalness | NeoForge | 1.21.1 | Server-side only | 2026-06-24 |
Questions
Does Backrooms need to be installed on the server?
Which loaders does Backrooms support?
Which Backrooms levels are available?
In the catalog
Backrooms is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.
More from lullaby
Similar mods
What the author says
Dare to step through a door that should never have been opened... Brings the unsettling world of the Backrooms to Minecraft. The Backrooms are an endless maze of liminal spaces—places that feel strangely familiar yet deeply unsettling. Empty hallways, abandoned rooms, and silent corridors create an atmosphere of…
Official listing
- Modrinth page
- modrinth.com/mod/ly-backrooms
- Owner
- lullaby
- Published
- 2026-07-02
- Updated on Modrinth
- 2026-10-07
- Facts verified
- 2026-10-15