S.T.A.L.K.E.R.: Clear Sky Steam Key

S.T.A.L.K.E.R.: Clear Sky

S.T.A.L.K.E.R.: Clear Sky – standalone prequel for the acclaimed S.T.A.L.K.E.R.: Shadow of Chernobyl, which tells you story about the Clear Sky group, that want to research the Zone and understand it better.

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