Stalker: Clear Sky - is a first-person shooter with elements of a role-playing game and survival horror from the Stalker series.

The events take place in the exclusion zone of the Chernobyl nuclear power plant. The main character is a stalker - a hunter for artifacts. In order to survive, he will have to fight with bloodthirsty mutants and treacherous people.

Several factions operate in the zone. The main character can join some of them. Weapons and equipment can be improved and repaired by contacting special characters (mechanics) that are present at the base of each faction. It is necessary to improve the weapon, because in its normal state it is ineffective.