Gears of War is a 2006 third-person shooter video game developed by Epic Games and published by Microsoft Game Studios. It was initially released as an exclusive title for the Xbox 360 in November in North America, Australia, and most of Europe and included a "Limited Collector's Edition" with added content and an art book titled Destroyed Beauty that detailed much of the game's back-story. Despite the initial statements of Xbox 360 exclusivity, a Microsoft Windows version of the game was developed in conjunction with People Can Fly and released a year later, featuring new content including additional campaign levels and a new multiplayer game mode. The game centers on the soldiers of Delta Squad as they fight to save the human inhabitants of the fictional planet Sera from a relentless subterranean enemy known as the Locust Horde. The player assumes the role of Marcus Fenix, a former prisoner and war-hardened soldier. The game is based on the use of cover and strategic fire for the player to advance through the scenarios; a second player can play cooperatively through the main campaign to assist. The game also features several online multiplayer game modes for up to eight players.