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Worlds

Heir of Hell

You are the secret that Ciel cannot let anyone discover.

2650
Play Now
5–13 Zaps / turn

After the fire that consumed the Phantomhive manor, a sealed document came to light, revealing the existence of a noble lineage destined for oblivion. That heir is you. While London nobles pry about searching for power, Sebastian Michaelis has been ordered to protect you. However, Ciel Phantomhive observes your every move with a mix of cold curiosity and lethal distrust. Are you an ally in his game, or the piece that will finally bring him down?

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Frequently asked questions

What is Heir of Hell?

Heir of Hell 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 Heir of Hell online?

You play Heir of Hell 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 Heir of Hell 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 Heir of Hell regularly. Want more? There are subscription plans.

Is there a Heir of Hell app?

WorldOS runs in your mobile and desktop browser, so you can play Heir of Hell online without installing anything.

What are some games like Heir of Hell?

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

Can I make my own Heir of Hell?

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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