WorldOS
Powered by Civilization 1

Your AI sandbox for any world.

The AI OS for Simulated Worlds

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Most Turns

I

Idol's Secret Girlfriend

You're the woman behind the biggest star in showbiz — the secret girlfriend nobody can know about. Every stolen glance in public is a headline waiting to happen. Your love story is the one the tabloids would kill for. Can you keep it?

🧑‍🤝‍🧑💬🎯📖🕐📊
World101
41K1M4.2
H

Hogwarts Simulator

An owl finds you in the summer of 1991 — same year as Harry Potter. Seven years at Hogwarts: classes, the House Cup, Quidditch, and your first, terrifying crush. The dark stuff is out there if you go looking.

🧑‍🤝‍🧑💬🎒🎯📖🕐+2
World101
21K794K4.6
T

The Contract Wife

A fake marriage. One priceless deal. Falling in love was never part of the contract.

🧑‍🤝‍🧑💬📧📸🎯📈+4
Xadia
7K268K4.7
B

BNHA

In a world where 80% of the population is born with a Quirk.

🧑‍🤝‍🧑💬🎒🎯📱📖+3
Boy030
4K188K4.4
A

American High School

Freshman year. One viral post, a rumor in the wrong group chat, a glance from someone across the cafeteria that you can't stop thinking about — and suddenly your whole life has changed. Welcome to Westbrook High, where four years will test your heart, your reputation, and who you become when nobody's watching.

🧑‍🤝‍🧑💬📸🎒🎯🧭+3
World101
5K170K4.9
M

My Hero Academia

💬🎯📖🕐
Hanako-san
7K170K4.9
J

Jujutsu Kaisen Simulator

Summer 2006. You're a special-grade sorcerer the high-ups keep buried in a sealed file — a woman with a technique that bends fate and a past nobody's allowed to read. The Hidden Inventory arc is just beginning.

🧑‍🤝‍🧑💬🎒🎯📖🕐+2
World101
5K148K5.0
B

BitLife - Life Simulator

A random year, a random country, random parents — the rest is up to you. Live month by month from first breath to last will, then keep going as your heir.

🧑‍🤝‍🧑💬🎒🎯📱📖+3
World101
4K140K5.0
T

Tokyo Revengers

Gangs, chaos, and a mission

🧑‍🤝‍🧑💬🌳📧🗂️🎒+7
Laura del Campo San Miguel
2K128K4.8
T

Transit Love Simulator

Four broken-up couples, one apartment, and a single rule: act like strangers. Your ex is in the room — and so is the person you might fall for next.

🧑‍🤝‍🧑💬🗨️🎯📖🕐+1
World101
2K121K4.2
D

Demon Slayer Simulator

Taishō-era Japan. You survived the Final Selection on Mount Fujikasane and earned your first crow. Breathe, draw your Nichirin blade, and climb from the lowest rank toward the Hashira — across a country where demons own the night.

🧑‍🤝‍🧑💬🎒🎯🗺️🛒+4
World101
3K107K4.4
B

BSD Canon Universe

꒰ canon universe! ꒱ BSD + USER

🧑‍🤝‍🧑📧📸🎒🎯🛒+5
morenari
2K92K4.6

Recently Updated

M
v3

My Hero Academia by VALENTINO (Copy)

Spanish

🌐🧑‍🤝‍🧑📧🗂️📸🎒+7
Scott Pilgrim
362K2
A
v5

Academia Elysium

An elite institute where grades matter least and secrets mean everything.

🧑‍🤝‍🧑💬📸🎒🎯🗺️+6
Hexatte
8261
B
v5

My Hero Academia

Train your Quirks, face villains, and become the number one hero.

🧑‍🤝‍🧑🕵️📸🎒🎯📖+6
Tsukii
411K0
Σ
v5

σ(^_^;)?

🧑‍🤝‍🧑📧🎒🎯🧭🛒+3
alecitte
156380
˖
v5

Jujutsu Kaisen: World of Sorcery

"Welcome to the Jujutsu Academy: where death lurks around every corner."

🧑‍🤝‍🧑🎯📖🕐🟢📊
Nilll
365500
G
v7

Gachiakuta Universe

In progress

🧑‍🤝‍🧑🎒🎯📖🕐💳
Pochitchii
579346
P
v2

Pokemon 🔴

Your own adventure as a Pokémon trainer!

📧🎯🗺️🎵📖🔔+4
Sunnie
3027K21
V
v3

Adela's Life

Balance the spotlight's glare with the warmth of home in this life and family drama simulator.

🌐🧑‍🤝‍🧑📜🌳📧📸+10
ivannovadakota
243521
M
v3

MY HERO ACADEMIA [SIMULATOR]

Enter U.A., master your unique Quirk, and ascend to the top of the Pro Hero rankings.

🌐📅🧑‍🤝‍🧑💬📧🗂️+16
☆¡メイメイ!☆
902K0
M
v3

MY HERO ACADEMIA【SIMULATOR】

Enroll in U.A. High, master your unique Quirk, and leap to the top of the Pro Hero rankings.

🌐📅🧑‍🤝‍🧑💬📧🗂️+16
☆¡メイメイ!☆
90627K5.0
C
v3

Ink Castle

A castle. Hundreds of creatures. Infinite ways to survive or... to love?

💬🎒🎯🎵📱📖+2
Dino
221790
v6

🥀| Your Boyfriend ᯓ𖹭.ᐟ

Can you escape his obsession?

🌐🧑‍🤝‍🧑💬📜📧📸+9
Dear_Sun
651K4

Top Creators

History

War

Business

Workspace

Adventure

Romance

Anime

Sci-Fi

Mystery

Sports

School

Detective

Horror

Survival

Cultivation

Fantasy

Comedy

Contemporary

Politics

Fandom

Isekai

Time Travel

What is WorldOS?

WorldOS is the AI OS for simulated worlds, powered by Civilization 1, our world model for human behavior and social simulation. Every world is a living simulation: chat with characters, watch social feeds react, trade in-world stocks, browse a generated web, and steer it with free-form actions. Anyone can create a world, compose it from apps like a desktop OS, develop their own apps, and publish for others to simulate and remix.

How it works

  1. 1

    Pick a world

    Browse community-made worlds — history, romance, sci-fi, war, fandom and more — or start from a remix.

  2. 2

    Simulate

    Type anything. The AI advances the story, characters answer, stats move, and every module reacts in real time.

  3. 3

    Create & share

    Build your own world: install apps, define characters and rules, then publish it for everyone to simulate and remix.

FAQ

Is WorldOS free?+

WorldOS is free during the beta. Later, simulations will run on credits you can purchase.

Can I create my own world without coding?+

Yes. The world editor is no-code: write the setting, add characters, install apps from the marketplace, set win/lose rules, and publish. Developers can go further and build custom widget apps on the app SDK.

What does Remix mean?+

Remix copies any public world — its settings, characters and installed apps — into your account so you can change anything and publish your own version.

Is there auto-save? Do I need to save manually?+

No manual saving needed — every run auto-saves to the cloud after each turn. Close it anytime and pick up right where you left off from My Sims. Each run is its own save, and you can rewind the timeline to any earlier turn.