Broken Rooms is powered by the Momentum Roleplaying System, which is designed to emphasize storytelling and fast, streamlined play. The Momentum system gives you the freedom to create characters with truly unique characteristics, in as much detail (or as little) as you want.
The Momentum system uses 12-sided dice to simulate characters’ actions as they interact with the Nearside. Dice are only rolled when the outcome of an action is in doubt, such as in a life-or-death situation, or when an important plot point depends upon a character’s success or failure. For routine or non-critical activities, dice rolls shouldn’t be needed.
Dice can generate Momentum, which can be used to fuel characters’ special Meridian Skills, provide bonuses, or even alter the course of the game.