In this module, we will explore two important parts of the design, the game world and storytelling. The game world, simply put, is the world where the game takes place. At its simplest level, it is defined by space and time. But we will explore the game world across the physical, temporal, environmental, emotional, and ethical dimensions. In addition to the game world, we will also explore storytelling in games. There are two perspectives on storytelling in games, the “designer’s story” and the “player’s story”. The designer’s story is the storytelling that is designed into the game. The designer’s story can be used to set the stage, provide purpose and engagement, and convey content, among other things. The setting, character design, and narrative are the designers primary design tools. The storytelling that occurs during play combines the designer’s story with the interactions and choices the player makes. The resulting experience crafts the player’s story.