s.s.stalker

S.T.A.L.K.E.R. is a first-person-shooter survival horror video game series developed by GSC Game World. The series is set in an alternate version of the present-day Chernobyl Exclusion Zone in Ukraine, where, according to the series' backstory, a mysterious second Chernobyl disaster took place in 2006. As a result, the physical, chemical, and biological processes in the area were altered, spawning numerous nature-defying anomalies, artifacts, and mutants. The player takes the role of a "stalker" - a name given to trespassers and adventurers who have come to explore the exclusion zone and its strange phenomena.
The series is loosely based on the novel Roadside Picnic by Arkady and Boris Strugatsky, and influenced by the movie Stalker by Andrei Tarkovsky. The name "S.T.A.L.K.E.R." is a backronym for Scavengers, Trespassers, Adventurers, Loners, Killers, Explorers and Robbers.

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