The Backrooms
The Backrooms adds a set of linked dimensions with their own inventory, entered through a new structure at the end of the game.
What it does
Players who step through the new end structure reach a series of Backrooms dimensions, each with its own inventory, so items carried in the Backrooms do not follow the player back to the main world. The mod includes 48 Backrooms levels, each with a distinct layout, and 36 Backrooms entities that inhabit them. Blocks inside the dimension are styled to look unfamiliar, which is part of how the setting is built.
The mod needs Polymer and Filament to run. Polymer's texture pack work must be enabled for the custom blocks to display correctly, so the server and players should both have it set up. The server must run the mod while players may add it or leave it out. The Backrooms is released under the MIT License and is not open source. Files are published for Fabric and Quilt on game versions 26.2 and 26.3, with 1.0.4+mod for 26.3 as the latest Fabric file and 1.0.2+mod for 26.3 as the latest Quilt file.
Key features
Separate Backrooms inventory
Each Backrooms dimension keeps its own inventory, so the items carried there stay separate from the main world.
48 Backrooms levels
The dimension is split into 48 levels, each generated with its own layout and character.
36 Backrooms entities
Creatures that inhabit the Backrooms levels are added alongside the new terrain and blocks.
Entry through an end structure
A new structure at the end of the game serves as the entrance into the Backrooms dimensions.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Use cases
Who it’s for: Server owners and players who want a separate, unsettling dimension with its own inventory and creatures. Because the server must run the mod, it suits multiplayer servers more than single-player worlds, though it can also be run in a local world.
How it compares
Vanilla Backrooms is server-side only, open source under the GNU General Public License v3.0 only, and published for 1.21.8 – 1.21.11, so players can join without installing anything. Backrooms FF Continued is a Fabric mod for 26.2 under the same GNU General Public License v3.0 only, and it is open source with both client and server running it. Boxy's Backrooms is a Fabric mod for 1.21.11 – 26.1.2, released under the Apache License 2.0 and open source, and it also needs both client and server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| The Backrooms | Fabric and Quilt | 26.2 – 26.3 | Server required, client optional | 2026-10-05 |
| Vanilla Backrooms | Fabric and Quilt | 1.21.8 – 1.21.11 | Server-side only | 2026-03-26 |
| Backrooms FF Continued | Fabric | 26.2 | Client and server | 2026-07-17 |
| Boxy's Backrooms | Fabric | 1.21.11 – 26.1.2 | Client and server | 2026-08-25 |
Questions
Does The Backrooms need Polymer or Filament?
Does a player need the mod to join a server that runs it?
Which loader does The Backrooms use?
In the catalog
The 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.
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Official listing
- Modrinth page
- modrinth.com/mod/aria-backrooms
- Owner
- Aria's Creations
- Published
- 2026-08-08
- Updated on Modrinth
- 2026-10-05
- Facts verified
- 2026-10-15