At the same time that Alpha Protocol was in development, Obsidian was also working on Fallout: New Vegas. Prior to working on New Vegas, they were contacted by Bethesda Softworks about developing a Star Trek game, but the idea never gained traction. After Bethesda released Fallout 3 and began to shift its own focus back towards its Elder Scrolls series, it approached Obsidian with the idea of having the latter studio develop another game in the Fallout series, as several of Obsidian's founders had worked on the franchise while at Black Isle.