The AI OS for simulated worlds. Pick a world (Hogwarts, WW2, sci-fi, anime), type any action, watch it react in real time. Free during beta.
Joined July 2026
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if you could rewrite history, what would you do?
call off D-Day as Eisenhower? keep Rome from falling?
WorldOS lets you actually do it. every move has consequences.
history only happens once. you don't have to.
play it free → worldos.cc
can monaco conquer europe without an army?
buy every hotel on the riviera? win france at the casino? trade spain for a yacht?
WorldOS lets you actually try it. every move has consequences.
play it free → worldos.cc
⚔️ WAR vs ROMANCE 💘
The Fandom Jam is live. Build an AI roleplay world from any fandom. The worlds people play the most win.
🏆 $500 in prizes
📅 Oct 12 to Nov 12
Pick a side 👇
worldos.cc/community/events/…
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Start from a starter world and hit Remix:
⚔️ worldos.cc/worlds/star-wars-…
💘 worldos.cc/worlds/hogwarts-b…
🏆 The World Jam winners are in.
🥇 The Obsession Game by Patxina
🥈 Jujutsu Kaisen: Cursed Fate by Eivy
🥉 DC Universe: Earth [???] by Xonia Rainforest
⭐ Staff picks: The Royal Selection, Neon Requiem, NULL ROUTE
36 worlds. 22,000+ turns.
worldos.cc
if you could rewrite history, what would you do?
call off D-Day as Eisenhower? push the button in the Cuban Missile Crisis? talk Napoleon out of invading Russia?
WorldOS lets you actually do it. every move has consequences.
play it free → worldos.cc