Dungeon Siege is a computer role-playing game developed by Gas Powered Games and published by Microsoft Game Studios. Chris Taylor (from Total Annihilation) showed Dungeon Siege years in production for the first time at E3 2000. The game was released in 2002 and later bundled with the X800 line of video cards in 2005. In November 2003, Gas Powered Games and Mad Doc Software developed an official standalone expansion pack for the game called Dungeon Siege: Legends of Aranna. It includes the original game.