Similarly, you may ask, what is the story behind BioShock Infinite?
BioShock Infinite puts players in the role of ex-Pinkerton agent Booker DeWitt, who is sent to Columbia to recover a young woman named Elizabeth. Booker is told by his anonymous employers that he has to "bring us the girl to wipe away your debt," suggesting that Booker owes a significant amount.
Likewise, why is BioShock Infinite so different? I'd say the biggest difference is that you're in a sky city instead of an underwater city and on the surface that creates a much lighter tone, but ultimately, at it's core, Infinite is just as dark as the first game. The game feel is still pretty much the same. Same series, but much different game.
Then, why is it called BioShock?
Originally Answered: Why is the video game series called "bioshock" ? It's a spiritual sequel to another series called “System Shock”. “System Shock” was all about androids, machines, hacking and implants, and since the new game is all about genetic modification through ADAM, “Bioshock” was a more appropriate name.
Is BioShock Infinite a sequel?
BioShock Infinite is not a direct sequel/prequel to any of the previous BioShock games, and it takes place in an entirely different setting, although it shares similar features, gameplay, and concepts with the previous games.
