BioShock 2: Minerva's Den is a single-player downloadable content (DLC) campaign for the 2010 first-person shooter game BioShock 2, developed by 2K Marin and published by 2K Games. The player assumes the role of Subject Sigma, an armored and genetically modified human, or "Big Daddy"; Sigma must travel through Minerva's Den, the technological hub of the underwater city of Rapture, to download a schematic of the city's supercomputer. Gameplay is similar to that of BioShock 2, with new enemies and weapons.