Mysterium is a cooperative, deduction game that challenges two to seven players to solve a murder that occurred thirty years ago. One player takes on the role of a restless ghost, tasked with communicating the true culprit of the murder to the assembled psychics. The other players all play as psychics, receiving visions and interpreting them to the best of their abilities in order to narrow down the list of suspects. Yet time is in no one’s favor tonight—if the players take too long to discover the truth, the bridge between the worlds is closed, and the ghost must wait another year to reach its eternal rest!