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The Backrooms : Lost Guest

Coming soon

SternRiseDiscovered Sep 22, 2026

About the game

The Backrooms : Lost Guest is a visually realistic, co-op survival horror exploration game developed with UE5, supporting 1 – 6 players. Evade terrifying creatures and deadly hazards while solving room-based puzzles to find your way out of the Backrooms. A chilling adventure awaits you…

Original Steam description

A lost journey that begins with a train accident.
Try to escape by solving puzzles with your friends, where fun and fear intertwine.

A new and different Backrooms game where you and your friends can experience an unforgettable adventure together.

Demo and release information

No demo is verified in the current check data. This does not mean the game has never had a demo; check its Steam page for current availability.

Steam demo, playtest and Early Access: what is the difference?

Information & artwork: Steam · Last checked UTC