Looks like they will be doing a prequel, the sands forming into a city is a sign. Apparently, Take-Two wants to release a new BioShock game every two years. That sounds ambitious to me! We also learned the game will be developed by the new 2K Marin Studio, created by BioShock developers last year.The trailer features a smartly dressed Little Sister carrying a Big Daddy toy; and we hear the game will now be set on the Atlantic coast. The fact that this trailer was included in the PlayStation 3 version of the original game would suggest that BioShock 2 is being readied for a multi-platform release. The original was 360 and PC exclusive for over a year.

No platforms have been announced for the sequel, which arrives between August and October of 2009, though it is expected to hit PC, PS3 and Xbox 360--the same systems as the narrative-driven underwater original.