S.T.A.L.K.E.R.: Clear Sky – standalone prequel for the acclaimed S.T.A.L.K.E.R.: Shadow of Chernobyl, which tells you story about the Clear Sky group, that want to research the Zone and understand it better.
Recent Reviews:
Very Positive (216) - 85% of the 216 user reviews in the last 30 days are positive.

This product has experienced one or more periods of off-topic review activity. Based on your preferences, the reviews within these periods have been excluded from this product's Review Score.
All Reviews:
Very Positive (15,189) * - 85% of the 15,189 user reviews for this game are positive.

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Release Date:
Sep 15, 2008

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Check out the entire S.T.A.L.K.E.R. franchise on Steam

Buy S.T.A.L.K.E.R. Clear Sky

Buy S.T.A.L.K.E.R.: Bundle

Includes 3 items: S.T.A.L.K.E.R.: Call of Pripyat, S.T.A.L.K.E.R.: Clear Sky, S.T.A.L.K.E.R.: Shadow of Chernobyl

S.T.A.L.K.E.R.: Call of Pripyat
S.T.A.L.K.E.R.: Clear Sky
S.T.A.L.K.E.R.: Shadow of Chernobyl

S.T.A.L.K.E.R. 2: Heart of Chornobyl


Prepare to enter the Zone for your own risk striving to make a fortune out of it or even to find the truth concealed in the Heart of Chornobyl.


Discover the legendary S.T.A.L.K.E.R. universe!


About This Game

Great Emission, the biggest anomalous energy blowout from the times of Second Incident at The Chernobyl Nuclear Power Plant, has shaken the world again and reshaped the Zone. To investigate its cause and and prevent future cataclysms is your only chance to survive in S.T.A.L.K.E.R.: Clear Sky.


With the anomalous activity at its maximum, the unstable Zone continues to tremor with outbursts. The transformation of the Zone map destabilizes the fragile balance of forces in the Zone. Hostilities for the new territories, artifact fields and spheres of influence flare up among groups. Feuds and friendships are left behind – now, everyone watches out only for themselves. The Faction War has begun. To survive, join one of the parties and knock out opponents over the Cordon... Or benefit from working for all the factions at once, like a true mercenary.


The safe and trusted pathways are no more. Known places disappear in impenetrable fields of anomalies, stalkers and entire expeditions vanish or remain trapped within. Mysterious territories that have been lost since the appearance of the Zone are opening up, calling for explorers. Your mission is to become a pioneer and explore all the new areas that have become accessible in "Clear Sky"!


As a mercenary named Scar, play a key role in Strelok’s fate and discover new details to the original game story, revealing its major secrets. Visit the familiar places as they were before the original game starts and witness the events that shaped the Zone to the years ahead.

Game features:

  • A prequel to S.T.A.L.K.E.R.: Shadow of Chornobyl, that reveals the backstory of the Zone, familiar characters and locations.
  • New types of equipment and weapons: HPSS-1m, hunting rifle, RP-74.
  • New locations: Swamps, Red Forest, Limansk and Abandoned Hospital, full of new stories and tasks.
  • An advanced upgrade system for weapons and armor with technicians, allowing you to improve and customize your favorite pieces.
  • Player's actions can affect the balance of power in the Zone and the influence of factions.
  • A dozen of new anomalies and artifacts, and a new artifact hunting system utilizing detectors.
  • Improved graphics, interface and AI, making the journey through the sinister radioactive lands even more convenient.

System Requirements

    • Supported OS: Microsoft® Windows® XP(Service Pack 2)/Microsoft® Windows® 2000 SP4
    • Processor: Intel Pentium 4 2.0 Ghz / AMD XP 2200+
    • Graphics: 128 MB DirectX® 8.0 compatible card / nVIDIA® GeForce™ 5700 / ATI Radeon® 9600
    • Memory: 512 MB RAM
    • Sound: DirectX® 9.0 compatible sound card
    • Hard Drive: 6 GB free hard disc space
    • Supported OS: Microsoft® Windows® XP/Vista (SP1)
    • Processor: Intel Core 2 Duo E6400 / AMD 64 X2 4200+
    • Graphics: 256 MB DirectX® 9.0c compatible card* / nVIDIA® GeForce™ 8800 GT / ATI Radeon® HD 2900 XT
    • Memory: 2 GB RAM
    • Sound: DirectX® 9.0 compatible sound card
    • Hard Drive: 10 GB free hard disc space
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

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