The player searches for invisible ghosts somewhere on the site by relying on sound on the ghosts to prevent them from being found, and inflicts damage on them.
Scores are awarded according to the damage inflicted, and ghosts continue to appear indefinitely even after the ghosts are defeated.
If a ghost finds you, it will attack you. If you are caught・・・・.

The game starts in the first-person perspective.
There is voice input by microphone.
　Talking to the ghosts will encourage them to appeal to you and identify your location.
Headset is recommended.
　The player must determine the ghost’s location by the direction of the sound, and act in such a way as to avoid being detected.
Types of ghosts
　New ghosts will appear every time a certain score is reached.
　The ghosts that appear can be seen by accessing the tutorial laptop.

This game has flashing lights.
　If you are sensitive to light, please stop the game and consult a doctor if you feel any physical problems.