The whisper soul — players can change the moment of time in each room with the system Time of infection to find a key or a hint to open the door through a special mobile phone, players can also see what happened in the past, more ways to play, please learn in the game. The game is a first-person puzzle game. Players can use the Time Contagion system to change the time in a room, get more clues to solve puzzles, and see what happened in the past using the cell phone feature. Players cannot see the ghost chasing them without using a mobile phone and can only judge the ghost’s location by the sound of footsteps. However, when the player uses a mobile phone, even though the ghost is visible, the movement speed slows down. Players need to find a balance, avoid the ghosts and find a way to escape from the haunted house.