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No.13813 header art

No.13813

An escape room game where you manipulate time within a room to break free. A man awakens in a strange place, wearing a mysterious helmet. Rewind and alter time to uncover the helmet’s secret and the reason you are trapped—and escape.

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Release
May 24, 2026
69 days ago
Steam Reviews
Positive17 reviews88.2%

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Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer.
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About the Game

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No.13813 is a new type of escape room game where you manipulate time to escape.
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A man awakens in a strange room, wearing a mysterious helmet.

Inside the room, he finds a note left behind by someone who was there before him.

It states that this place allows time travel for only one day,

and that the door opens only during a specific one-minute window.

To escape, the player must uncover that exact minute by manipulating time and following clues.

What is this helmet, and why is he trapped here?

Uncover the hidden truth by exploring clues scattered throughout the room.

All mysteries come together in the end, revealing an unexpected twist.

Key Features:

Innovative Time Manipulation Mechanics

Freely control time to solve puzzles.

A Mind-Blowing Twist

All clues connect to deliver a shocking ending.

Unique Puzzle Design

Experience creative puzzles based on time and causality.

13,813 copies

Once 13,813 copies are reached, the remaining mysteries and story threads will be revealed through future expansion content, featuring more diverse gameplay mechanics and an expanded universe.

Remake of the Original

This title is a remake based on an original work created 13 years ago. Through this remake, various gameplay mechanics, as well as the story and world, have been further refined.