Smoke and Ash

 
5
Spy must contact traitors and lead lynches. He knows which roles are masoned, and can use that to his advantage. The mastermind can hide or get masoned. Other townies can do their usual reverse mafia plays.
almost 12 years
Game 1: Vig and MM left. Mastermind wins.
almost 12 years
Game 2: Traitor, mason, masoned MM. Town wins.