Game Description
A variant of The Resistance was released in 2012 called Avalon. In Avalon, instead of Imperial Spies and Resistance Fighters, the game pits Arthurian Knights against the evil Mordred and his minions. The gameplay is significantly changed, however, by the addition of a role called Merlin, a good player who is told at the beginning of the game who the evil players are. If the evil players lose the game, however, they have one last chance of redeeming themselves by correctly guessing Merlin's identity. If they can do this, the evil players win. 
 
Players: 5-10
Age Range: 8 and above
Playing Time: 20 Mins per game
 
References: https://en.wikipedia.org/wiki/The_Resistance_(game)