S.T.A.L.K.E.R. is a Survival FPS set in the near-future Chernobyl exclusion zone. The player, as a stalker, is to go through 30 sq.-km area of the Zone exploring it, learning about its dangers and inhabitants, surviving deadly anomalies, radiation, collecting valuable artefacts, but ultimately solving the mystery behind the Zone: what caused it to existence, what’s controlling it etc. The opponents will include mutated animals, weird creatures, rival stalkers, the military and more. The complete freedom of actions coupled with A-life system implemented in the game will provide for unique experience for every player and the unlimited replay-ability. Building up relations with NPCs, playing different roles in the game, making friends and foes, collecting information will all impact the ending that the player comes to in the game.