Let me start by saying - Crysis 2 is not the same as Crysis 1. Simple. Does that make it a bad game? No - it dosent. Infact - Crysis 2 is a damn good game. The thing to remember as other reviewers have said - Crysis 1 was a benchmark in terms of graphics quality and game world design. By those I mean you had to have a powerhouse pc to run Crysis 1 on high quality when it was released years ago. Even now, low and mid range computers will struggle to run Crysis 1 with high settings. The performance hit is also a huge jump between DX9 and DX10. As for the game world - the whole game was set on an island with lots of open landscape like Farcry 1 and 2 by the same developer. This meant the sense of freedom is greater than that of other games - including Crysis 2.
The sequel still retains nice graphics - on high settings Crysis 2 runs smoothly on my mid to high end computer. This is through DX9 and Windows XP. I have not tried DX10 on Vista or Win7. The first thing that struck me when playing Crysis 2 was how the game world feels smaller and more built up. Bear in mind though, this Crysis is set in NYC and not a tropical island - you still have the ability to tackle objectives from various directions and decide if to run in all guns blazing or do it all stealth like.
From other reviews I have read for Crysis 2 it is quite apparent many PC gamers were disappointed with Crysis 2 as it was not like Crysis 1. Crysis 1 was an awesome game - and so was Crysis Warhead. Since the style of Crysis has changed with the sequel - fans of the games were hoping for the same style as Crysis 1 but with even more sequel goodness. A lot seem to feel they have got a console orientated Crysis. This is obviously true since it is a multi platform release. So that means the developer created a game engine to suit more than just the PC and to broaden their target audience to include console owners. Crysis 1 was only on PC. You may notice many reviews of Crysis 2 on the 360 and PS3 are good and this is because it is the series debut on a console, so considering its the same game no matter which platform then the good reviews show this is a quality game.
So far I have really enjoyed playing Crysis 2, its still fun to lay low and scope out an enemy objective before deciding weather to riddle the whole place with bullet holes or sneak in and pick them off one by one. From the minute the game starts I was hooked and the intro is really good but I wont spoil that and let you play it yourself. Definatley a 4 star, the only thing I can think of to mark it down one star was because I was one of those avid Crysis 1 fans and was hoping for more of the same open world playground gameplay in Crysis 2. But - now that I have played the sequel it is still a really good installment to the series and I recommend it to anyone.