A couple months after playing and finishing this game, and having some time to digest the experience and mull it over, I am looking back at this game much the same way I look back at Christopher Nolan's Inception. I am not fully sure of what I experienced but I think it was really damn good. That said, I probably would never want/need to experience it again.
I will leave the duty of assigning a score to the game to reviewer's with more perspective than me. All I know is that I don't necessarily look back or feel all that great about the game or the experience. It was melancholy to say the least. I remember being more frustrated with the run and gun gameplay than excited. I remember being more depressed by the story than wow'ed. I hope Ken Levine's next venture takes him out of the Bioshock universe and in to something new and very different.