S.T.A.L.K.E.R.: Shadow of Chernobyl is a survival-horror first person shooter video game by Ukrainian developer GSC Game World, and published by THQ. nVidia GeForce 5700/ATI Radeon 9600/128MB DirectX 9.0c compatible video card.Intel Pentium IV 2.0 GHz/AMD Athlon XP 2200+.LAN/Internet connection with Cable/DSL speeds for multiplayer.nVidia GeForce 7900 series/ATI Radeon HD X1850/256 MB DirectX 9.0c compatible video card.Intel Core 2 Duo E6400/AMD Athlon 64 X2 4200+.Microsoft Windows XP (SP2)/ Microsoft Windows (SP4).