Stalker (stylized S.T.A.L.K.E.R.) is a video game series produced by the Ukrainian company GSC Game World, set in the exclusion zone around Chornobyl Nuclear Power Plant and inspired by the 1979 Soviet movie of the same name. The first 3 games in the series (Shadow of Chernobyl, Clear Skies, Call of Pripyat) were released within 1 year of each other and are often discussed as a single extended game. The first true sequel, S.T.A.L.K.E.R. 2: Heart of Chornobyl, will release in 2024.