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Oct 22, 2025·Claaudius
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Backrooms #999999999 is a singleplayer/4 player co-op horror exploration game. Unlock the puzzles, survive the entities, escape the deadly geometry and try to reach the final level in one piece. Good luck, wanderer!

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About Backrooms Game No. 999999

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.

Backrooms Game No. 999999 video 1

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.

Backrooms Game No. 999999 video 2

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.

Backrooms Game No. 999999 video 3

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 Game No. 999999 video 4

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