by ironregime
Game length varies wildly with Betrayal, and isn't reduced very much by familiarity. Mostly it depends on how many Haunt rolls occur, which Haunt comes up, who is the Traitor, and the layout of the house and location of heroes.I've had games take anywhere from 30 minutes to 2 hours, but mostly averaging around an hour. My group is generally 5-6, but we've had 3- and 4-player games as well. (The higher player count games are usually better.)