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The elevator broke down.
Head to the emergency stairs to exit from the 8th floor.
However, there was an "abnormal staircase" that looped forever...!

Many strange things happen to you as you try to get down to the first floor.

You find all 30 anomalies,
Will we be able to reach the true ending?

If you find anything unusual, please be sure to return.
If there is no problem, please proceed.

Method of operation:
W/A/S/D - Move
E - open door
Esc - Settings

Content production/distribution guidelines

Please feel free to post and distribute videos, whether you are an individual or a corporation.
Please include the name of the game in the title of your video and stream.
Example) 異常階段、異常階段-AbnormalStairs、AbnormalStairs
Please refrain from reprinting or secondary distribution without permission.
Please refrain from analyzing the game and using internal assets without permission.
Although some damage may occur during content production/distribution, we cannot be held responsible. note that.
We would appreciate it if you could include a link to your Steam page in the summary section.
These guidelines are subject to change without notice.