I beat the game in 3 straight days of playing roughly 6 hours a day.
reason i didn't give it a perfect 10, is because I also played Call of Duty 4, which I felt was even better and crazy in terms of lots of action and eye-candy, and game play. The game play of Crysis is almost -perfect, but very slightly might at one point or another seem slightly repetitive, just slightly. I am gonna have to disagree with many review sights that think its the best game of the year, Its a great game and awesome game that will make you money worth it, but I think of it as the 2nd best game of the year. Which is still awesome.
It was a little buggy when I bought it also especially toward the end of the game, it seems they were in a rush to release this game, they only game out with a patch in January, which did fix the bugs, or most of them at least.