Is Backrooms #999999999 free?

Not right now — Steam does not list Backrooms #999999999 as free to play, and none of the stores we track sells it in your region.

Can I play Backrooms #999999999 on Mac?

Not natively — Steam lists no macOS version of Backrooms #999999999. Mac players would need a cloud gaming service or a Windows compatibility layer.

Is Backrooms #999999999 on PC Game Pass?

No — Backrooms #999999999 is not on PC Game Pass right now.

Backrooms #999999999

Claaudius · December 31, 2026 · Horror, Multiplayer, Online Co-Op, Co-op, Action

No store is selling Backrooms #999999999 right now. We track it and will show a price as soon as one appears.

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Best price

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Prices last checked 6 Nov 2026, 20:47 UTC

No store is currently selling Backrooms #999999999. It released on December 31, 2026 and was developed by Claaudius. We keep tracking it across every store we cover, so set an alert below and you will know the moment it is on sale again.

Screenshots

About Backrooms #999999999

✦ AI summary

Backrooms #999999999 drops you into mind-bending procedural levels filled with hostile entities and deadly environmental puzzles that demand both wit and teamwork to survive. Navigate this nightmarish liminal space solo or with other wanderers, where every wrong move means becoming one with the walls themselves.

Explore the infinite spaces beyond the reality you know, as you fall into the eerie levels of the backrooms.

Levels

Each level has a unique aesthetic, the geometry is weird, yet somehow familiar, as if something tried to put it together, but that something is not human. You will have to traverse the spaces carefully, because the walls themselves will try to kill you.

Entities

Weird abominable creatures live here, and most of them want you dead. How you may survive them, is a challenge you will have to overcome. Let's hope you won't lose any limbs in the process.

Puzzles

The backrooms will put your intelligence to the test. Sorry, you will not get a participation trophy here if you fail, you will just become smeared paste.

Multiplayer

The backrooms welcomes wanderers from all over the world. Will your teammates help you survive, or will they become ground meat for the entities?

Backrooms #999999999 — game info

Platforms: Windows
Player modes: Single-player, Multiplayer
PC Game Pass: Not included

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