BioShock 2 is the sequel to the first-person shooter game "BioShock". The game has some new features, but overall "BioShock 2" is very similar to the first game. It takes place 8 years after "BioShock". In "BioShock 2", the player plays as a Big Daddy, a major enemy from the first game, called Subject Delta. Subject Delta is an early version of the Big Daddy, the Alpha Series.