This is a 3D simulation game.

Player will be customising the main character (gender, appearance). The main character of the game is a ghost like creature who lives in human's shadow (with human appearance). Once player successfully enters a person's shadow, he/she will be able to access all the memories of this person. In the day time, player cannot do anything but watching at the person live his/her life. In the night time, after the person falls into sleep, player will be able to take over the control of the body. Player can sneak out and do anything he/she wishes. Whatever player does, the outcome will be seen in the next morning and this might affect the person's life.

There are many different people living in the village and player can try to enter anyone of them. However there are only a few people can affect the endings of the game. Also, there is a story lies behind all the events which explains the worldview and the existence of the shadow creature. Player can find all the clues within people's memories.