BioShock 2 is a first-person shooter video game, being developed by 2K Marin and 2K Australia for the PlayStation 3 and Xbox 360 video game consoles, and the Windows operating system.[4][7] It is the sequel to the critically acclaimed 2007 video game BioShock. The game is scheduled for simultaneous release on February 9, 2010, for all platforms.

The game is set in fictional dystopian city Rapture in alternative history 1970, a decade after the events of BioShock. The protagonist and player-controlled character is a Big Daddy, a being that has had its organs and skin grafted into an atmospheric diving suit. Among the first of its kind, the player-controlled Big Daddy reactivates with no recollection of the past decade’s events, and scours the city in a vain attempt to relocate the Little Sister that he was paired with. When it becomes obvious that Rapture’s leader Sofia Lamb will become responsible for the city’s destruction, the Big Daddy attempts to overthrow Lamb and her army of Big Sisters.