Its good but lacks something
The game play is good and there is a decent range of weapons and plasmids (magic like abilities). This being said there is nothing ground breaking here most of which you will have seen before in Bioshock before. Most of the weapons are you FPS standards and you can only carry 2 at a time making it seem way more limited. My biggest gripe here was not being able to carry enough ammunition for a single weapon.
The plot is very good and it will flow along nicely making it quite easy to finish the game way more quickly than you intended. That is the sign of a game that has been well laid out. That being said it can leave you a lot of questions at times and leave you confused at times. There are a couple of nice twists but from what i have read most people including myself saw them coming.
The main reason i felt this game wasn't quite as good as the original is quite simple, Colombia for me just didn't have the feel Rapture had but i can't explain what.
Games with scores of 90+ should be ground breaking, but i didn't honest think it was.