Cluethulhu

Cluethulhu is a social deduction party game. It evolved from the famous Mafia and Werewolf games. It’s quite different though, in that the Cultists (ostensible bad guys) are the majority, and it is the Investigators (good guys) who must conceal their identity to destroy the Cult before their evil plan reaches fruition.

Each player is secretly assigned a role - Investigator, Cultist, or someone more ambiguous. There is also a Keeper who controls the flow of the game.

The game alternates between night and day phases. During the day the Investigators secretly detain and arrest Cultists, those arrested are out of the game. During the night, the remaining Cultist's vote on the player they suspect is an Investigator. That player is murdered and is out of the game.

Investigators win when there are an equal number of Cultists and Investigators. Cultists win when they have killed all Investigators. Other roles have more specific win conditions such as the Evil Child or the Blood Siblings.