Yes, the games are not especially creepy but the implications are really horror material the more you think about it. Like the reason why Aperture is abandoned, what experimentations were conducted there, what are the consequences, who is the rat man… Chills.
I think the S.T.A.L.K.E.R games are outright survival horror. The realism of the games, the historical event as background, makes it even more creepier.
Is this version has the coup d’etat story or just endless mode?