Obsidian Entertainment is an entertainment software developing company based in Santa Ana, California. It was founded in 2003 by Feargus Urquhart, Chris Parker, Darren Monahan, Chris Avellone and Chris Jones. Obsidian was the developer for Star Wars: Knights of the Old Republic II: The Sith Lords. Obsidian was founded by former employees of Black Isle Studios, which created Fallout, Fallout 2, Planescape: Torment and Icewind Dale. Other notable games by Obsidian include: Alpha Protocol (2010), Dungeon Siege III (2011) and their most popular game Fallout: New Vegas (2010).