Enter the Chernobyl Exclusion Zone. Since the 2006 explosion, the zone has become a tangled web of anomalies, artifacts, and people searching for a new life while struggling to survive—yourself included. Choose who you are, your purpose, your mission, and what you are fighting for.
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Frequently asked questions
What is S.T.A.L.K.E.R?
S.T.A.L.K.E.R is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.
How do I play S.T.A.L.K.E.R online?
You play S.T.A.L.K.E.R online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.
Is S.T.A.L.K.E.R free to play online?
Yes. Your first visit after each 24-hour window automatically starts a free Zap allowance (no card needed) — enough to play S.T.A.L.K.E.R regularly. Want more? There are subscription plans.
Is there a S.T.A.L.K.E.R app?
WorldOS runs in your mobile and desktop browser, so you can play S.T.A.L.K.E.R online without installing anything.
What are some games like S.T.A.L.K.E.R?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like S.T.A.L.K.E.R.
Can I make my own S.T.A.L.K.E.R?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.