Halo 2 is a first-person shooter video game developed by Bungie and published by Microsoft Game Studios. The game follows the story of Master Chief, a genetically enhanced supersoldier tasked with defending humanity against the Covenant alien race. Players can interact with their environment, wield two weapons at once, board enemies' vehicles, and switch sides to play as a Covenant Elite. Halo 2 also features new vehicles, weapons, environments and supports Xbox Live for broadband multiplayer action.