The terrain, bosses, physics, graphics, scale, and parts of the story were all top notch.Crysis your basic alien invasion FPS.. There's absolutely nothing new about that. The plot is about as thin as Kate Moss. Whoo hoo your guy has some military suit that makes him super powerful.. that's not like any other game, is it?
The only thing that Crysis brings to the table is ridiculously good looking graphics. Nothing else about the game is innovative in any way/shape/form.
The scene with the carrier, the level inside the alien ship with no gravity, etc.
The story also flowed very well and was obviously well written.