S.T.A.L.K.E.R.: Call of Pripyat is the direct sequel of the S.T.A.L.K.E.R.: Shadow of Chernobyl. As a Major Alexander Degtyarev you should investigate the crash of the governmental helicopters around the Zone and find out, what happened there.
S.T.A.L.K.E.R.: Call of Pripyat system requirements
Operating System: Windows XP(Service Pack 2)/Microsoft Windows 2000 SP4