Welcome. You are about to find yourself in the midst of a great rivalry.
Similar worlds
Frequently asked questions
What is Rivals?
Rivals 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 Rivals online?
You play Rivals 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 Rivals 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 Rivals regularly. Want more? There are subscription plans.
Is there a Rivals app?
WorldOS runs in your mobile and desktop browser, so you can play Rivals online without installing anything.
What are some games like Rivals?
WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Rivals.
Can I make my own Rivals?
Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.









