Warning: Players with heart disease and other similar diseases should not play.

Press the Space to turn on the light to see where the ghost is.

Ghosts will be slaughtered if they enter one of the HolyCircle in the game while the light is on.

Each player has four chances to turn the light on; every press will consume the player's health bar. If players are running out of health, they lose.

If ghosts attack the players successfully, players lose.

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