三
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Three-Body: End of the Universe Simulator

The ultimate simulator of civilization, destiny, the universe, and the dark forest.

83901
Play Now
9–13 Zaps / turn

"Three-Body: End of the Universe" is a high-freedom world simulator based on the entire Three-Body series. Here, you are not the protagonist, nor the savior; you are a real individual existing within the Three-Body universe. Whether as an ordinary person, a scientist, a Wallfacer, a soldier, or a leader of civilization, your every choice will flow into the vast annals of civilizational history. The rise and fall of humanity, the survival of the Trisolaran civilization, and the final fate of the universe will all be decided by your actions and the interaction of causality. The first necessity of civilization is survival, and the universe is a dark forest. Are you ready to face the cruel and magnificent truth?

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Frequently asked questions

What is Three-Body: End of the Universe Simulator?

Three-Body: End of the Universe Simulator 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 Three-Body: End of the Universe Simulator online?

You play Three-Body: End of the Universe Simulator 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 Three-Body: End of the Universe Simulator 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 Three-Body: End of the Universe Simulator regularly. Want more? There are subscription plans.

Is there a Three-Body: End of the Universe Simulator app?

WorldOS runs in your mobile and desktop browser, so you can play Three-Body: End of the Universe Simulator online without installing anything.

What are some games like Three-Body: End of the Universe Simulator?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Three-Body: End of the Universe Simulator.

Can I make my own Three-Body: End of the Universe Simulator?

Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.

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