All throughout my time playing this game, I couldn't help but feel the game was shouting “I'm unnecessary!” at me. Contrary to what game publishers would like to think, not every successful property warrants a sequel, and while there might have been some potential in BioShock for a sequel or spin-off, the cop-out of handing it to another division to just bang out a cash-in title shows, painfully so. It's hard to play this game without being aware that it's just cashing in, from the feel of it being just a level pack, to the derivative story, to the somewhat half-assed ideas added by the new studio.
If you absolutely adored BioShock and couldn't wait for more, I could imagine the very similar BioShock 2 could fill the need, though it'll do it somewhat deceptively as it's really filling the emptiness with – well – more emptiness, not adding but at points even detracting. To me, BioShock already disappointed after its hype, and BioShock 2 just adds insult to injury. Yes, the gameplay tweaks improve the shooting action, and it is unquestionably a better shooter than its predecessor. But the game suffers under having no evolution in the RPG elements, repetitive level design hurting the fun, and a terrible story dragging along throughout. At only 12 hours long, I'd have a hard time advising people to buy what is essentially a competent – but at points heavily flawed – map pack with a multiplayer patch.