There are many, many variants on this game, and you don't need a thing to be able to play them other than a group of people. I run a Mafia version (Mafia kill in the night; Sheriff used to identify the mafia/townspeople; Doctor to save a random person; etc) which is always a lot of fun. I just use a standard deck of cards to assign roles, but the moderator can just whisper in ears. https://en.wikipedia.org/wiki/Mafia_(party_game)