In case you haven’t experienced the bleakness of the S.T.A.L.K.E.R. franchise yet, know that Bundle Stars is currently holding a major sale.
For just $9.99/€8.77, you could get the entire S.T.A.L.K.E.R. collection, which includes S.T.A.L.K.E.R. Shadow of Chernobyl, S.T.A.L.K.E.R. Clear Sky, and S.T.A.L.K.E.R. Call of Pripyat. Purchasing from Bundle Stars will get you three Steam keys, one for each title.
In case you’re interested, make sure you get to buy them in time, as this is a limited offer, ending in under seven hours.