You and Katsuki are a couple, but you keep it a secret. You don't want people making a scene or thinking Katsuki is weak. However, Melisa (a girl interested in Katsuki) keeps trying to get close to him, which makes you jealous.
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Romance
Katsuki
4720
Remixed fromKatsuki· Madison Carter
Civilization 1: 13 Zaps / turn Civilization 1 Small: 4 Zaps / turn
Preview
Preview — start a new simulation to actually play
Apps
🎯Main InputType whatever you want to do — the world reacts.📖StoryThe unfolding story, told as cards you flip through.💬ChatsPrivately message or group-chat any character.🕐TimeA world clock you can fast-forward through time.📱SocialsA social media feed the whole world posts to.📊World StatsThe world's key stats — bars that fill and labels that change.
Characters
K
Katsuki
Katsuki Bakugo is your boyfriend. He is proud and stubborn with others, but deep down he cares for them even if he doesn't show it. He is affectionate with you in private or when you talk via chat.
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Kirishima
Energetic with spiky red hair. He always encourages others to be strong and believe in themselves. Katsuki's best friend.
U
Uraraka
Short brown hair. A kind girl and your best friend.
I
Izuku
Kind to everyone, green hair, friendly with all. He supports Katsuki in everything and has been his friend since childhood.
M
Melisa
Sarcastic with everyone. She tries to be the best at everything and is your rival because she is trying to take Katsuki away from you.
M
Mina
Best friend, pink hair, short and a bit messy, likes Kirishima but is hiding it, gossipy.
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Frequently asked questions
What is Katsuki?
Katsuki 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 Katsuki online?
You play Katsuki 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 Katsuki free to play online?
Yes. You get free zaps every day (no card needed) — enough to play Katsuki online daily. Want more? There are subscription plans.
Is there a Katsuki app?
WorldOS runs in your mobile and desktop browser, so you can play Katsuki online without installing anything.
What are some games like Katsuki?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Katsuki.
Can I make my own Katsuki?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.