65%Strong matchAnomaly Exit
93%41793% positive reviews, Very Positive across 417 reviews·Psychological Horror · Hidden Object
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Don't trust your eyes. A spot-the-difference horror with photography and a mysterious story. Explore 3 levels, find 100+ anomalies, and manage your sanity — mistakes warp reality. Uncover the truth of Project 404!
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Anomaly 404
SteamAbout Anomaly 404
As a journalist, you're infiltrating a secret military bunker to expose the horrifying truth of "Project 404". Your mission: find and photograph the anomalies. Just remember — your eyes will deceive you.
INSTRUCTIONS
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If you see an anomaly, take a photo.
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If there is no anomaly, keep moving without taking a photo.
Anomaly 404 is a first-person psychological horror. The gameplay is a spot-the-difference experience. If you understand the instructions above, you are ready to play.
KEY FEATURES
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Over 100 Anomalies to Find
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Multiple Levels to Explore
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Sanity System
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Story Through Documents
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Immersive Atmosphere
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Interactive Environment
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Photography Mechanic
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Steam Achievements
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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