Prototype

Prototype is pretty cool. While it doesn't feel as fluid as Crackdown and it's very reminiscent of its spiritual predecessor, The Incredible Hulk: Ultimate Destruction, Prototype still has a lot of good stuff to offer. The gameplay is nicely varied, the atmosphere is suitably gritty, and the story is vaguely intriguing so far (I'm about 1/3rd through)... It has managed to hold my attention.