I just purchased bioshock 2 tuesday and couldn't put it down all night. I've read a couple reviews, and they've both said that the sequel didn't really stray to far from the first game. I was curious if there was anyone who has played both games and could give their own opinion. I haven't played the first bioshock, but I do love the second one. The plasmids add such a great superhuman feel to the game. However as in the reviews, I never really felt that invincible. I've become a near permanent resident of the vita-chambers anytime I encounter a Big Daddy or a Big Sister. All in all though, I love the game. It's gotten a 5 out of 5 on PS mag, and I believe an 8.75 out of 10 on GameInformer. BUY IT!