Saw it last night and thought it was absolutely abysmal. I was a big fan of the games too, but this "movie" just defecated all over it.
A) It was too tame, definitely seemed dumbed down "for the kiRAB".
B) They messed with the characters (Jim Bravura in the game was an elderly white man with a beard and moustache...).
C) It was painfully slow.
D) The acting from all involved (apart from Olga Kurylenko's body) was awful.
E) The direction was lame, and relied too much on "stylish" camera angles that made it unintentionally hilarious (case in point the scene were Max is just spinning around on the spot for no apparent reason).
Diary of the Dead is still the worst film i've seen this year, but this is a very close second. Dire.