Screenshots
Backrooms Mainframe
Stackpack Games · Published by Stackpack Games
Content notice: Limb dismemberment
Negative — 14% positive (22 reviews)
Last updated 27 Sept 2026
Backrooms Mainframe is a 1-6 player co-op horror game. Explore the labyrinthes while avoiding entities and other dangers while finding your way through.
Early AccessDJCTQ 18Co-op
£3.34
Lowest price we've ever recorded
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£3.34
Price history
3 Sept 2026Lowest: £3.34 · Highest: £3.3411 Oct 2026
Adventure, Indie, Strategy, Early Access · 2022 · More under £5 games
Explore the endless corridors of Backrooms Mainframe, a cooperative horror experience from Stackpack Games. Join up to six players to uncover secrets and survive the dangers lurking in this mysterious digital realm.
About this game
You are sent down into the backrooms to explore and assess the dangers in the levels based on the famous creepypasta. Each level features plenty of fun and danger along the way.
Immersive Graphics
Realistic visuals and sound design to really put you into the backrooms
Co-op Multiplayer
Explore the backrooms with a team of up to 4 players
Dungeon Crawler Mode
Enjoy procedural generation? Then this is the mode for you. Select between 5 different levels to traverse using randomized generation making each playthrough unique!
Immersive Graphics
Realistic visuals and sound design to really put you into the backrooms
Co-op Multiplayer
Explore the backrooms with a team of up to 4 players
Dungeon Crawler Mode
Enjoy procedural generation? Then this is the mode for you. Select between 5 different levels to traverse using randomized generation making each playthrough unique!
System Requirements
Will my PC run this? →Minimum
Minimum:
- Requires a 64-bit processor and operating system
- OS: 64-bit Windows 10
- Processor: Intel Core i5-4430
- Memory: 8 GB RAM
- Graphics: NVIDIA GeForce GTX 960 2GB
- DirectX: Version 11
- Storage: 3 GB available space
Recommended
Recommended:
- Requires a 64-bit processor and operating system
- OS: 64-bit Windows 10
- Processor: Intel Core i5-6600K / AMD Ryzen 5 1600
- Memory: 16 GB RAM
- Graphics: NVIDIA GeForce GTX 1070 8GB
- DirectX: Version 12
- Storage: 5 GB available space
Supported Languages
English*
*languages with full audio support
*languages with full audio support
Latest news
Patch NotesOfficial
HotFix 1
Fixed a spawn error where players would spawn into a wall upon playing the main gameRead full article on Community Announcements (Nack McStackpack)AnnouncementsOfficial
2 new levels available now!
Return to the backrooms with many new updates in the game! Lighting has been overhauled in numerous levels, all the menus have been redesigned and much more awaits! {STEAM_CLAN_IMAGE}/43317955/8242c1f058c60a2e45861dbf0de9625c05c5cb86.png{STEAM_CLAN_IMAGE}/43317955/716e5ae6cffd54722c0f0443f99f8926dfc9daac.png{STEAM_CLAN_IMAGE}/43317955/716e5ae6cffd54722c0f0443f99f8926dfc9daac.png{STEAM_CLAN_IMAGE}/43317955/67fda176fd1aeccea627da61a1cda3ac178fbc83.png{STEAM_CLAN_IMAGE}/43317955/e20fc539fc12708c73fe4620fdeb2fdfa12bb592.png{STEAM_CLAN_IMAGE}/43317955/22c10b991a5dd9b171e1a22a99cb7674ad5de89b.pngRead full article on Community Announcements (Nack McStackpack)Patch NotesOfficial
Hotfix
-Fixed a few sections that would cause you to be stuck in an infinite load screen loop. ****There is a bug that has been reported in regards to level 0 where small sections of the level may not load. This is being looked into and a fix will be out asap.* Should you have trouble with this and have a save file from a previous playthrough, you can go to the hub (there is a doorway at the beginning of level 0, where all the levels will be unlocked for the time being.Read full article on Community Announcements (Nack McStackpack)AnnouncementsOfficial
Backrooms Mainframe updated mechanics out now!
After what feels like a crazy long wait, its time to return to the backrooms to see several new features! -Made the hub level a load game function -Changed level design to flow into each other instead of going to the hub after every level -Added hiding mechanics -Added puzzles to solve -Added objectives to certain levels -Updated sanity damage from enemies -Heavily redesigned or expanded (or both) multiple levels -Major Ai improvements -Added death animations -Added a mini level in level 0 -Added more item randomization (with more to come in future updates) -Game now supports up to 6 players -Added swim mechanicsRead full article on Community Announcements (Nack McStackpack)Patch NotesOfficial
Level 0 and balancing
-Completely overhauled the graphics for Level 0 -Fixed a glitch where you could look through walls if you stood close enough to them -Balanced Bacteria to stop from detecting players further out than necessary -Fixed a bug where if you encountered an entity and it your sanity went down, you would go negative on sanity. -Fixed a bug where when falling to the town from level 0 you could get stuck halfway downRead full article on Community Announcements (Nack McStackpack)
