Cliffhanger

From the introduction:

At the beginning of every scene, the Show Runner describes the scene and defines a Goal, if there is one. The players can then describe the action of their characters. The Show Runner describes how the environment reacts to the characters. If there are other individuals other then the player’s character the Show Runner describes their actions and the player’s have the chance to react. The taking of turns continues until the Goal is achieved or the scene ends and another on starts. They can be multiple Goals, some of them contradictory.