http://www.gamespot.com/pc/action/stalke...&om_clk=topslot8.5 but more importantly, these quotes:
This first-person survival game is at times amazing and engrossing and on par with such classics as Deus Ex and System Shock
S.T.A.L.K.E.R. features one of the best ballistics models ever seen in a game, and as a result, firefights feel authentic as you try and hit someone with what can be a wildly inaccurate rifle.
The game's artificial intelligence is impressive, both in and out of combat. In combat, enemies are cunning when given enough room to move around. Human enemies hunt you intelligently, using cover and the terrain to their advantage.
There are some large-scale battles that will find you fighting alongside teammates, and afterward you'll watch as AI friendlies saunter up to the wounded writhing on the ground, say something nasty in Russian or Ukrainian, and then shoot them in the head.
The game's flashlight system also deserves a heaping of praise. The flashlight in S.T.A.L.K.E.R. cuts through the darkness with a realism that's beautiful to behold. It's your most important friend in the dark, but at the same time, it also betrays you, since enemies can see the light from your beam long before you can actually see them.
This is a bleak game, but in a good way, as it captures its postapocalyptic setting perfectly. It's also an excellent combination of combat, horror, and exploration.
it seems like we fps lovers haven't had a single player game of this quality and openness since far cry. i am so looking forward to playing this!