Everyone secretly gets a role on their phone. The mafia know each other; everyone else is the town.

At night everyone taps a name on their phone. The mafia pick who to kill, the doctor picks who to save, the detective learns whether someone is mafia, and villagers pick a suspect so nobody can tell who's who.

By day the TV reveals who died. Argue, accuse, then vote someone out (or skip).

The town wins when every mafia member is gone. The mafia win once they equal the town.