The Backrooms
by Bakewell13
The Backrooms is a NeoForge world generation mod that adds a new dimension of endless, randomly generated rooms and hallways.
What it does
Players reach the dimension by suffocating inside solid blocks such as gravel, which sends them into a space of connected rooms that extend without limit. Its layout is generated at random, so each visit can look different. The mod is built for the 1.21.1 game version and runs on NeoForge alone, with the environment set to client and server.
Key features
New dimension
A separate dimension is added to the world, reached through a noclip effect rather than a portal.
Noclipping into the Backrooms
Moving through solid blocks such as gravel leads the player into the dimension.
Infinite random layout
Rooms and hallways are generated at random and continue without an end, so the space never repeats in full.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Backrooms: The Complex is another NeoForge option for 1.21.1, released under the Apache License 2.0 and not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| The Backrooms | NeoForge | 1.21.1 | Client and server | 2026-08-30 |
| Backrooms: The Complex | NeoForge | 1.21.1 | Client and server | 2026-06-11 |
Questions
Does The Backrooms need NeoForge?
Does a server need the mod installed?
In the catalog
The Backrooms is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
The Backrooms can be accessed from suffocating inside of solid blocks, such as gravel. The dimension is completely randomly generated, the rooms and hallways go on infinitely.
Official listing
- Modrinth page
- modrinth.com/mod/the-backrooms
- Owner
- Bakewell13
- Published
- 2026-08-09
- Updated on Modrinth
- 2026-08-30
- Facts verified
- 2026-10-15