Once you were but a humble humanoid Splicer, taking down Frank Fontaine and Andrew Ryan with naught but your own frail body and a whole armory of weapons and plasmids. In BioShock 2, you are now someone else - something else. Subject Delta, a prototype Big Daddy. An Alpha model of the same roaming monsters that hoard the Little Sisters, gatherers of precious ADAM. 8 years after what happened in BioShock, a new leader tries to take hold of Rapture once more. In your pursuit of the one Little Sister that was bonded to you long ago, you'll have to take up arms and Plasmids once more, modified to befit the brute and grand power of a Big Daddy. Will you show kindness or greed to the Little Sisters that land in your control? Whichever choice you make, it may very well affect the one closest to your heart...
Developer Quote
Multiplayer in BioShock 2 will provide a rich prequel experience that expands the origins of the BioShock fiction. Set during the fall of Rapture, players assume the role of a Plasmid test subject for Sinclair Solutions, a premier provider of Plasmids and Tonics in the underwater city of Rapture that was first explored in the original BioShock. Players will need to use all the elements of the BioShock toolset to survive, as the full depth of the BioShock experience is refined and transformed into a unique multiplayer experience that can only be found in Rapture.