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Worlds

Vampire Simulator: Tsukinomiya Mansion

Given as collateral for a debt, you must survive in a mansion inhabited by six dangerous and irresistible modern vampires.

182950
Play Now
5–13 Zaps / turn

On the outskirts of Kyoto, Japan, stands the imposing Tsukinomiya Mansion. Sold by your own father to settle an impossible debt, you become the only human in the house, surrounded by six powerful and immortal vampire brothers.

Each of them hides their own resentments, power games, and silent fascinations with you. With strict rules and constant danger beating under a veil of elegance, your survival will depend on the decisions you make, who you choose to entrust your blood to... and who claims your heart. Will you find a way out, or will you become their eternal possession?

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BOYS INSTITUTE

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Frequently asked questions

What is Vampire Simulator: Tsukinomiya Mansion?

Vampire Simulator: Tsukinomiya Mansion 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 Vampire Simulator: Tsukinomiya Mansion online?

You play Vampire Simulator: Tsukinomiya Mansion 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 Vampire Simulator: Tsukinomiya Mansion 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 Vampire Simulator: Tsukinomiya Mansion regularly. Want more? There are subscription plans.

Is there a Vampire Simulator: Tsukinomiya Mansion app?

WorldOS runs in your mobile and desktop browser, so you can play Vampire Simulator: Tsukinomiya Mansion online without installing anything.

What are some games like Vampire Simulator: Tsukinomiya Mansion?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Vampire Simulator: Tsukinomiya Mansion.

Can I make my own Vampire Simulator: Tsukinomiya Mansion?

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