Forget Me Not: Florida, GMZero RPG 6

Forget-Me-Not (FMN) is a progressive roleplaying game experience that plays in about three hours, though longer games are an option. It can be played with or without a gamemaster, but requires at least three players.

Set in the fictional town of Gator Creek, FMN allows players to take on the roles of various key figures in town — the Sheriff, the Town Drunk, the Meth Addict, the Tattooed-Face Man, etc. — but no one controls any of the characters. Each scene is played differently from the last. In each scene, players take on alternate roles and focus on varying aspects of the town, while exploring the confusing and weird behaviors of the people unaffected by Joe Bob Lewis’ disappearance.

All Protocol Games are 100% GMless, require almost no preperation time, and use the same game system. There are over 50 games in the series, which means there HAS to be something here for you.