Follow-up to BioShock, 2K Games' critically acclaimed and commercially successful 2007 release, BioShock 2 is a first-person shooter set in the fictional underwater city of Rapture. As in the original game, BioShock 2 features a blend of fast-paced action, exploration and puzzle-solving as players follow varying paths through the overarching storyline based on the decisions that they are forced to make at various points in the game. In addition to a further fleshing out of the franchise's popular storyline, players can look forward to new characters, game mechanics, weapons, locations and a series first, multiplayer game options.

Set approximately 10 years after the events of the original BioShock, the halls of Rapture once again echo with sins of the past. Along the Atlantic coastline, a monster somehow familiar, yet still quite different from anything ever seen has been snatching little girls and bringing them back to the undersea city. It is a Big Sister, new denizens of Rapture who were once one of the forgotten little girls known as Little Sisters, known to inhabit the city's dank halls. No longer a pawn used to harvest ADAM, the dangerously powerful gene-altering lifeblood of Rapture, from the bodies of others and in turn run the risk of being harvested herself, the Big Sister is now the fastest and most powerful thing in Rapture. You, on the other hand are the very first Big Daddy, in fact the prototype, that for some reason has reactivated. You are similar to the Big Daddies familiar from the original BioShock, but also very different in that you possess free will and no memory of the events of the past ten years. The question is, as you travel through the decrepit and beautiful fallen city beneath the waves, hunting for answers and the solution to your own survival, are you really the hunter, or the hunted?

The most literate first person shooter of 2007 returns

The multiplayer mode features a completely different story and even developer

Will you save the Little Sisters or exploit them?

As a Big Daddy you can now venture outside of Rapture and onto the sea floor

You play the original Big Daddy - a more independently minded prototype to the giant deep sea divers from the first game. The undersea world of Rapture has been taken over by the mysterious Big Sister, who has begun to kidnap children from coastal cities around the world.

A much larger range of plasmid powers are now available, as well as more standard weapons and the Big Daddy's iconic rivet gun and drill. The game's real conflict is emotional though, as you are once again forced to make a decision between sacrificing Little Sisters or protecting them and making your task even harder. Bioshock 2 will make you think, and not just about tactics.

• Atlas shrugged: The award-winning story-telling of Bioshock continues with a new hero and a new threat in the underwater dystopia of Rapture.
• Evolve yourself: New plasmids, including new dual-wielded attacks, let you unleash amazing powers but at the cost of your humanity.
• Cry Little Sister: As the first Big Daddy you are far faster than the other lumbering giants, but equipped with the same weapons and the ability to venture onto the ocean floor.
• Big boss: Defend yourself against the constant attacks of Big Sister by setting up traps and ambushes, but always making sure you have an escape route!
• Separate lives: For the first time Bioshock has its own multiplayer mode - featuring a completely different story and created by developer Digital Extremes (Unreal Tournament 2004).