A group of stalkers, for the first time, reaches the very heart of the Zone-the Chernobyl Nuclear Power Plant-and triggers a cataclysm on the brink of a catastrophe. An immense blast of anomalous energy transforms the Zone: the once reliable and relatively safe roads are no longer so, the landscape is wiped clean by outbursts of anomalies, and previously unknown areas appear on the Zone map. Stalkers and expeditions perish or end up isolated within the lost territories.
One of my best games I have ever played. Since 2009 i'm still playing it, including the other S.T.A.L.K.E.R. games! GSC Game World created a great game with their X-Ray Engine 1.4,1.5,1.6. And i'm also waiting for the old team of S.T.A.L.K.E.R. release their first online MMORPFPS (Massively Multiplayer Online Role Playing - First Person Shooter!) the Survivium by Vostok Games.
I'm just sad that GSC Game World is selling the game to Bethesda Studios.