Five Shells
Avidly Engaging Minds
Mafia
Mafia (5-20 Players) - is a role playing game which can keep a group engaged in arguments for hours. Every Player is dealt a card face down which defines her role - Mafia, Civilian, Guardian, Infidel or God. The Mafia kill one player while others sleep, the guardians try to protect people from the mafia and everyone tries to identify and execute the mafia during the day by majority vote.
Mafia requires the ability to read your opponents body language and facial expressions. Mafia also requires you to be able to lie convincingly with a poker face in the face of strong accusations.