The document analyzes conventions used in the video game Call of Duty: Modern Warfare 2. It discusses the game's use of character control by allowing the player to take on the roles of multiple characters throughout the campaign. It also examines the game's playing methods, which include a single-player campaign, competitive multiplayer, and co-operative special ops missions. Additionally, it describes the game's free roam level game space, linear narrative structure, and first-person camera view.