High Quality Content by WIKIPEDIA articles! Dungeon Siege II (DS2) is a computer role-playing game and is the sequel to 2002`s popular Dungeon Siege. It was developed by Gas Powered Games and released on August 16, 2005, one year delayed from original projections. The story is a continuation of the Dungeon Siege storyline. On August 2006, the expansion Dungeon Siege II: Broken World was released.