What is the hardest game of the gen that you have played?

[SmoothCriminal]

Crysis on Delta difficulty. Now I dream of Asians firing sub-machine guns at me. They are the smartest, deadliest, most adaptable AI I've ever played against. And it was damn fun. Crysis is my third favorite FPS of all time.

Here's hoping Crysis 2 is even better.