E
Worlds
AnimeFantasy

The Wrong Contract

One demon, two masters

150
Play Now
8–12 Zaps / turn

During the summoning ritual, something went terribly wrong. Instead of a single master, Sebastian Michaelis is now bound to two souls: yours and Ciel Phantomhive's. As polar opposites who constantly clash, you must learn to share the demonic butler while he desperately tries to fulfill contradictory orders without breaking the pact.

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Frequently asked questions

What is The Wrong Contract?

The Wrong Contract 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 The Wrong Contract online?

You play The Wrong Contract 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 The Wrong Contract 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 The Wrong Contract regularly. Want more? There are subscription plans.

Is there a The Wrong Contract app?

WorldOS runs in your mobile and desktop browser, so you can play The Wrong Contract online without installing anything.

What are some games like The Wrong Contract?

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

Can I make my own The Wrong Contract?

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