Pulse & Pressure

Pulse & Pressure is a genre agnostic, rules-light system for telling stories about characters that are in a high stakes situation where they are under constant pressure. Possible examples include daring heist stories (whether done in a fantastic, sci-fi or modern style) or horror stories where the characters are being constantly chased by an unspeakable evil. The system revolves around a Pressure Level which represents how close the situation is to destabilizing for our heroes.

The rules fit on one page (front and back) and are good for one-shots or a quick "session zero" game.  All you need are a GM, players, some paper and six-sided dice.