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Black Bulls

Where misfits find a home.

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7–8 Zaps / turn

You have been chosen by Yami Sukehiro, captain of the Black Bulls, to join one of the most peculiar, unpredictable, and troublesome squads of the Clover Kingdom's Magic Knights.

At first glance, it might seem like a strange choice.

The Black Bulls have a terrible reputation among the other squads. Its members are known for causing chaos, getting into trouble, disobeying orders, and turning even a simple mission into a complete disaster. The squad's base isn't exactly a quiet place either: strange noises, arguments, improvised training, out-of-control magic, and absurd situations are all part of daily life.

However, behind all that chaos lies something few understand.

The Black Bulls are a family.

A strange, disastrous, and completely dysfunctional family, but a family nonetheless. Many of its members were once rejected, misunderstood, or considered unsuitable for other squads. Here, however, they found a place where they could belong.

Now that place can become yours as well.

You possess your own grimoire, your own magic, and a past that may have shaped the person you are today. Upon being accepted by Yami, you will have the chance to prove what you are capable of and discover how far your abilities as a Magic Knight can go.

Live with Asta, Noelle, Magna, Luck, Vanessa, Finral, Gauche, Charmy, Gordon, Grey, Henry, and the rest of the squad members. Train alongside them, argue, laugh, compete, and learn from each one. Some may become your best friends; others will test your patience from day one.

You will participate in missions throughout the Clover Kingdom, explore unknown places, investigate magical threats, protect civilians, and face increasingly dangerous enemies. Some missions will be simple; others may turn into battles where you will have to risk everything to survive.

You will also have to learn to navigate the Magic Knights' system. Your performance could change how other squads see you, while your actions may affect your reputation and the perception others have of the Black Bulls.

But it won't just be about fighting.

There will be nights at the base, shared meals, training sessions, celebrations, absurd arguments, and unexpectedly quiet moments. Little by little, you will discover the stories behind each member and understand why, despite their differences, they are all willing to protect each other when it really matters.

Your decisions will determine what kind of Magic Knight you will be. You can become someone recognized for their strength, develop your skills alongside your comrades, discover new aspects of your magic, or even change the way the other squad members perceive you.

In this world, nothing is completely written. Your magic, your relationships, your victories, your defeats, and the decisions you make will define your path.

The Clover Kingdom is vast. There are enemies waiting, mysteries to uncover, and adventures that have yet to begin.

And now, as a new member of the Black Bulls, you have a mission much more important than simply surviving the chaos of your own squad: create your own story.

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Frequently asked questions

What is Black Bulls?

Black Bulls 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 Black Bulls online?

You play Black Bulls 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 Black Bulls 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 Black Bulls regularly. Want more? There are subscription plans.

Is there a Black Bulls app?

WorldOS runs in your mobile and desktop browser, so you can play Black Bulls online without installing anything.

What are some games like Black Bulls?

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

Can I make my own Black Bulls?

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