after (finally) beating Quake4 and not discounting it's graphic qualities, game-play wise Crysis is much more engaging than Q4. Yes, both are run and gun, but at least Crysis has a decent storyline and different scenes... island breach, full scale assault on the AA batteries (really gave a feeling of war), ice mountain, USM Continental.... unlike Q4 where you are just in a hostile planet. And to be really pushing it I actually enjoyed the Tank mode more than the Mechs in Q4. the VTOL wasn't as bad as everyone say, but just pointless.
Crysis is not a short game, it's just right; I got 10 hours in Hard mode. CoD4 is a short game.
and to the critics of Crysis, please name the FPS you enjoyed more. I actually enjoyed this a tad more than Half Life 2 to be honest.
and let's put thing in perspective:
I really enjoyed: CoD4, Serious Sam, System Shock, Half Life 1, Max Payne 1, Thief 1&2, Hitman 1
really hated: Q2, Q4.
and I played mine on 1024x768, with Medium Setting with high on some.