72%Strong matchTwisted Gallery 异馆
85%25385% positive reviews, Very Positive across 253 reviews·Psychological Horror · Walking Simulator
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You've been hired to keep watch in a mysterious building with an infinite stairwell. Your task is simple: investigate each floor for strange phenomena. If you find an anomaly, be careful. Test your skills on the global leaderboard and in the weekly challenge event.
It's your first day as a security officer in a mysterious building designed by an unknown architect. Within its vast stairwell, you are tasked with inspecting the floors for reported strange phenomena. Make your way through the building and carefully choose which way to go based on your findings.
If everything is normal, proceed upstairs.
If you notice an anomaly, go downstairs, quickly.
Do not miss too many anomalies.

The Stairwell is a psychological horror game inspired by anomaly loop games such as The Exit 8, with a new vertical dimension of massive scale. There are over 50 anomalies to uncover between all difficulties. You can see how many are left to find after you win a game. Anomalies that you haven't seen will usually appear first.

Compete against the world for the fastest game completion time and see how you rank against your friends. Find your name highlighted on the leaderboard in the color according to your ranking.

Customize the difficulty of your playthrough. In nightmare mode, beware: the lights are out. Can you find anomalies in total darkness with your candle?

With a new challenge appearing every Friday, play a variation of the game with different environments and anomalies. Your score will go on the weekly leaderboard.
Features music from Avith Ortega and Cerulean.
You are free to live stream the game and upload video content. It is appreciated if you mention the game's title in any descriptions and link the Steam page. Thank you!
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
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