Our work at Creature Labs has often been presented as an example of player-created narrative, which is really just a poncy way of saying there's no story but the game lets people make up their own stories. But somewhere there's a middle ground between full-on sandbox entertainment and the linear narrative constructs in movies and books. Pause & Effect - the art of interactive narrative is by a working artist, Mark Meadows, and looks at the history and context of narratives and how they relate to this "holy grail" of games design.