This document discusses game story devices (GSD) and introduces six types: 1) Interactivity, which makes games more interactive than passive media, 2) Non-linearity, which allows non-sequential player choices, 3) Player control, which gives players power over characters and worlds, 4) Collaboration, which enables shared storytelling among players, 5) Immersion, which deeply engages players in game worlds, and 6) Cinematics, which are video cutscenes that can advance plots but risk reducing immersion. The types of GSD give game designers tools for combining narrative and challenges to create meaningful games.