Crackdown also has 2 player online co-op, double the chaos, carnage & fun.
I'm sure inFamous is a good game based on what i have seen and the little i have played at a buddys, but with it been only a 1 player game will it have the staying power of crackdown?
Oh, and Crackdown 2 is coming, 4 player online co-op sandbox? its too good to be true 
Lastly? was Crackdown the first game to introduce co-op play in sandbox games?
We now have saints row 2 co-op and mercenaries 2 co-op. (i actually like mercenaries 2 now i'm playing it with a buddy)







