"S.T.A.L.K.E.R.: Clear Sky" is another part of the cult series of computer games that takes place in a post-apocalyptic world full of dangers and secrets. The game was released in 2008 by the Ukrainian studio GSC Game World and continues the story started in the previous part, "S.T.A.L.K.E.R.: Shadow of Chernobyl". This is another encounter with the mysterious Zone, an area around the Chernobyl nuclear power plant that has become a place full of anomalies, mutants and artifacts.

"S.T.A.L.K.E.R.: Clear Sky" is a prequel to the first part of the series, the plot of which takes place in times before the events presented in "Shadow of Chernobyl". Players take on the role of a Stalker who woke up in the Zone after the Chernobyl disaster, suffering from amnesia and not remembering who he was. The stalker's main goal is to discover his identity and find a way out of this dangerous land.

The game focuses on the conflict between various Stalker factions that compete for control of the Zone's mysterious artifacts. Our hero becomes involved in these disputes and becomes a key figure in the fight for survival.