It is a first-person horror game. It is played in a palace called Yeongyeong in Korea. (The palace is customized and not perfectly matched.) If there are no abnormalities, approach the species. If you have any abnormalities, approach the soldier at the door. If you succeed in the correct approach, you will go from 0 o'clock to 1 o'clock, and if you get it wrong, you will go back to 0 o'clock unconditionally. The map changes automatically at the same time as the time changes. Clear if you survive from 0:00 to 6:00. The game is only for walking and running forward. (There are a total of 20 anomalies.)