Mysterium Kids: Captain Buh's Treasure is a cooperative children's game where you must work together to find Captain Buh's treasure before the moon sets and the night is over. In each round, one of you plays the ghost of Captain Buh. The ghost uses the included tambourine to give the others an acoustic hint about an object located in the haunted villa. To do this, they must mimic the sound of the object depicted on the card: it could be a ticking grandfather clock, a hammer, or even a popping balloon. Then, the other players must think about which card the ghost might have meant. Only if you guess correctly will you gradually get closer to Captain Buh's treasure.