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Worlds

Attack on Titan

Year 845. Behind three colossal walls, humanity has dozed through a century of cage-bound peace — until the Colossal Titan tears the gate open and the world becomes hell. Pick a heart to follow, and offer it.

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9–13 Zaps / turn

Attack on Titan

The wall was supposed to be eternal. Then a hand reached over it.

It is the year 845. For a hundred years, humanity has lived inside three great walls — Maria, Rose, Sina — calling the cage "peace." Today the Colossal Titan appears over Shiganshina, the gate shatters, and the man-eating Titans pour in. The age of dread begins, and a generation of children will have to decide what their hearts are worth.

You choose whose eyes to see it through — a canon hero, a soldier history forgot, or someone entirely your own. Then you live it, one cruel day at a time, as the canon timeline grinds forward: the fall of Shiganshina, the battle of Trost, the 57th Expedition beyond the wall, and the buried truth of this world.

  • 🗡️ Train and survive — ODM gear, anti-personnel combat, strategy, and the resolve to face the Titans
  • 🩸 The canon spine, or your own — relive the arcs in order, or change where they lead
  • 🤝 Bonds forged in blood — comrades, rivals, the one you'd die to protect; trust climbs through four hard stages
  • 📰 A world that grinds on — read the Walls Gazette; the Garrison, the Military Police and the conspiracies move with or without you
  • 🕊️ Define your own win — reach the sea, uncover the whole truth, find an ending where no one is sacrificed, or end the cruel world yourself

Shinzou wo sasageyo. Offer up your heart.

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Frequently asked questions

What is Attack on Titan?

Attack on Titan 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 Attack on Titan online?

You play Attack on Titan 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 Attack on Titan 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 Attack on Titan regularly. Want more? There are subscription plans.

Is there a Attack on Titan app?

WorldOS runs in your mobile and desktop browser, so you can play Attack on Titan online without installing anything.

What are some games like Attack on Titan?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Attack on Titan.

Can I make my own Attack on Titan?

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