The first BioShock game surprised gamers when it debuted on the Xbox 360 in August, 2007. It was a horror-shooting game with mature themes and an imaginative story set in an underwater paradise gone bad. Today, Take-Two Interactive’s 2K Games division is launching the sequel, BioShock 2. The first game sold more than 3 million copies and got an average review rating of 94 out of 100 on the review aggregator Metacritic. Jordan Thomas, creative director at 2K Marin, had the task of heading the design of BioShock 2. We talked with him yesterday about the challenge of creating a brand new studio and creating a major sequel to a hit game at the same time. Here’s an edited transcript of that interview.