The events in the game are set shortly after Strelok shuts down the brain scorcher in 2012, after which a large number of Stalkers make their way to the center of the zone. S.T.A.L.K.E.R.: Call of Pripyat is a direct sequel to Shadow of Chernobyl. Call of Pripyat features many of the gameplay innovations that were added in Clear Sky. The game is set shortly after the events of Shadow of Chernobyl and the shutting down of the brain scorcher. It follows Major Degtyarev and his investigation of the 5 crashed Stingray helicopters which were part of the failed Operation Fairway. S.T.A.L.K.E.R.:Call of Pripyat is a post-apocalyptic FPS game with RPG, survival, and horror elements developed by GSC Game World and set in the same universe as the previous games.