(Re)play them on newer, more powerful hardware on improved resolution and graphics
With STALKER Complete 2009, S.T.A.L.K.E.R.: Shadow of Chernobyl has been redesigned with new visual qualities and features like AI improvements, revamped textures, a new weather system, the ability to reset hostile status and join factions outside of the storyline, and many more. It was designed and tested for S.T.A.L.K.E.R.: Shadow of Chernobyl v1.0005/1.0006 - starting a new game is required. Thanks: Luke.
Update: the corresponding 'Complete' mods for S.T.A.L.K.E.R.: Clear Sky and S.T.A.L.K.E.R.: Call of Pripyat are also locally mirrored.