Guys, I have a PS3. I need to know, I want Call Of Duty World At War to beat it and get the Naughtsy Zombie effect. However, this does sound sick but I already have World at War for my Nintendo Wii which I have already beaten. Is it worth getting World At War just for the sick zombie effect? And I want to try about getting Call Of Duty Modern Warfare 2, just because I heard it's amazing! Well any help here?