12 Hours Museum” is a 3D exploration adventure game. The goal of the game is to find 45 anomalies in order to escape from the museum using a pocket watch. Once you find an anomaly, you can view and re-experience it. Collecting all endings and performing certain operations will open an extra mode.
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To play in English, change the language at the title screen by selecting "X key→Language".
The main content is the so-called 3D Mistake Search (99 in all), but players who like side trip content such as appreciation of paintings and mini-games, outlandish endings, difficult scenarios, etc., are welcome to play this game.
This is an adventurous game in which the male protagonist, rendered unconscious by an accident, wanders around a museum that appears in his dreams and aims to escape (or return alive). The objective of the game is to search for the meaning of life by repeatedly looping in the museum in his dream and gradually pursuing his own deep psychology and the truth.
Using a 3D first-person perspective, the player adventures through a dimly lit museum, utilizing a pocket watch and flashlight. This is a mistake-finding game where you find places that feel strange (anomalies). The game is cleared when you find anomalies 12 times in a row within the time limit. There are various storylines with “multi-endings” that branch off into seven endings depending on your actions during play.
Mouse controls change the viewpoint, and WASD keys (or spacebar) can be used to move the player. By “keeping your eyes on your feet” when discovering an anomaly, a moving monster will appear and the player will be transferred to the next stage.
Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.







To play in English, change the language at the title screen by selecting "X key→Language".
The main content is the so-called 3D Mistake Search (99 in all), but players who like side trip content such as appreciation of paintings and mini-games, outlandish endings, difficult scenarios, etc., are welcome to play this game.
This is an adventurous game in which the male protagonist, rendered unconscious by an accident, wanders around a museum that appears in his dreams and aims to escape (or return alive). The objective of the game is to search for the meaning of life by repeatedly looping in the museum in his dream and gradually pursuing his own deep psychology and the truth.
Using a 3D first-person perspective, the player adventures through a dimly lit museum, utilizing a pocket watch and flashlight. This is a mistake-finding game where you find places that feel strange (anomalies). The game is cleared when you find anomalies 12 times in a row within the time limit. There are various storylines with “multi-endings” that branch off into seven endings depending on your actions during play.
Mouse controls change the viewpoint, and WASD keys (or spacebar) can be used to move the player. By “keeping your eyes on your feet” when discovering an anomaly, a moving monster will appear and the player will be transferred to the next stage.
12 Hours Museum” is a 3D exploration adventure game. The goal of the game is to find 45 anomalies in order to escape from the museum using a pocket watch. Once you find an anomaly, you can view and re-experience it. Collecting all endings and performing certain operations will open an extra mode.
We are not affiliated with IsThereAnyDeal.
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Steam data © 2025 Valve Corporation. Steam and the Steam logo are trademarks and/or registered trademarks of Valve Corporation in the U.S. and/or other countries. Independent of Valve. Pricing and availability subject to change.