The $9.99 extension builds on the single-player narrative of Bioshock 2, and plunges players deep into Rapture once again. The additional campaign adds three new areas to explore, aswell as six new Little Sisters. The DLC's narrative runs alongside Bioshock 2's campaign, and fills in some plot detail.
Certainly sounds like something we can get behind. While it wasn't as ground-breaking as the original game, we enjoyed our time with Bioshock 2 and could certainly settle for some more.