77%Strong matchThe Anomaly Project
82%40082% positive reviews, Very Positive across 400 reviews·Horror · Psychological Horror
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Explore a shifting haunted house alone or with friends in online co-op. Watch every room carefully, uncover disturbing anomalies, and question what is real as the house grows stranger with every new discovery.
Explore a haunted house alone or in online co-op with up to 7 friends as reality twists around you. Study each room carefully, search for disturbing anomalies, and decide what has changed before the house becomes even more unsettling.
Every hallway, room, and object may hide something unnatural. Some changes are obvious. Others are subtle. The more you discover, the stranger the house becomes.
Pay close attention to your surroundings and compare each room to how it should look. If something feels wrong, it probably is.
From small changes to disturbing apparitions, every anomaly tests your memory, observation, and nerves.
Face the house alone or investigate together in online co-op. Work with your friends to examine rooms, call out strange details, and figure out what is real.
Playing together makes every discovery more intense as your team tries to separate imagination from reality.
Step into a dark and eerie house filled with unsettling sights and supernatural events. Encounter disturbing anomalies, blood-stained scenes, skeletons, grave markers, and other frightening details hidden throughout the environment.
The house keeps changing, and it never feels safe.
Track your progress and earn achievements as you explore the house, discover anomalies, and push deeper into its mysteries.
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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