A 1-4 person co-op horror exploration game is called Escape the Backrooms. To try and escape, navigate through creepy backroom levels while dodging monsters and other peril. The community is continually rewarded with free content upgrades that provide new levels and game modes.
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Guides
Escape the Backrooms – All Levels Guide
Here’s an informational guide on all of the levels in Escape the Backrooms. Guide to All Levels