S.T.A.L.K.E.R.: Clear Sky is the prequel to Shadow of Chernobyl . The GOG version is notable because:
: It may also be a user-created compression of the DRM-free offline installer provided by GOG, which allows you to install the game without an internet connection or launcher. About the Game Stalker.Clear.Sky.GOG.rar
: If it's the game itself, you can change the language via the Language_setup.exe found in the installation directory. Stalker.Clear.Sky.GOG.rar
Depending on where you obtained the file, it usually contains one of the following: Stalker.Clear.Sky.GOG.rar
: Use a utility like WinRAR or 7-Zip to unpack the .rar file.