From publisher blurb:
The Last 12 Hours tells the stories of small-time criminals, innocent dupes, and the ironic hand of fate that throws them into circumstances beyond their control. It’s the world of Reservoir Dogs and Blood Simple, the world of Cormac McCarthy and William Lindsay Gresham. It’s the world where the good and the not-so-good have to face the ugly consequences of things they did (and didn’t do) in a very short about of time. It’s a world of violence, desperation, and survival at all costs… and like the characters being played, the players won’t have anyone to guide them but themselves.
The Last 12 Hours is a story roleplaying game. It is a GMless game in which the participants portray characters without a gamemaster controlling things. The outcome of given actions and the overall path that the character take is determined by the choices the players make. This game is designed to move the storyline forward without a single participant’s veto power.