In Bioshock, which was released in August last year, players enter the game as a castaway in Rapture, an underwater utopia torn apart by civil war.

Caught between powerful forces and hunted down by genetically modified "splicers" and deadly security systems, players have to come to grips with a dangerous and mysterious world filled with powerful technology and fascinating characters. With multiple avenues for surmounting challenges on both a moral and tactical level, no encounter ever plays out the same.

Nearly everything in the game can be turned into a weapon; players can biologically modify their bodies with plasmids, hack devices and systems, upgrade weapons and craft new ammo variants, and experiment with different battle techniques.

The game sold 2 million units since its release across both the PC and Xbox 360 platforms.

Though is still unclear when the PS3 version of BioShock will be released, nor it will have some extra content.

Two months ago, during an investor call Take Two announced it will release a sequel of Bioshock most probably sometimes between August and October 2009.

The Take Two execs said that the new game, which for the moment was introduced as Bioshock 2, will be developed by 2K Marin, but they confirmed that Ken Levine will be involved in the development of the new game.