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Project Sekai

K
Kaito <34 followers · 15 worlds
111401
Start Simulation
Civilization 1: 14 Zaps / turn Civilization 1 Small: 7 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.𝕏X (Twitter)The town square — short posts, hot takes, trending drama.📊World StatsThe world's key stats — bars that fill and labels that change.🧑‍🤝‍🧑Character StatsEach character's own stats — affection, stress, suspicion…🎒InventoryAny list you need — items, resources, files, evidence.🌐BrowserSurf the world's internet — every page made on the spot.🛒ShopA storefront — spend your money on goods that land in your bag.📈Stock TickerA market that reacts to everything you do.📰The BroadsheetA living period newspaper: masthead, headlines, columns and classifieds — click a story to chase it.📊Story CounterStats that update with your adventure💳AlipayTransfer funds, request payments, and track transactions.🛍️TaobaoDiscover electronics, daily outfits, and dynamic trends!🛍️AURA BoutiqueHigh-end fashion, exclusive footwear, and premium accessories🛍️MercadoMundoThe global marketplace of your simulated world🛒SuperMallEverything you need, just a click away☕StarbucksSip, collect Stars, and order world-customized beverages.

Characters

E
Emu

Extroverted, cheerful, energetic, hyperactive, a bit scatterbrained. Loves saying "Wonderhoy," sometimes speaks so fast she's hard to understand.

R
Rui

Calm, cat-like demeanor, sometimes sarcastic, loves robotics.

N
Nene

Introverted, calm, shy, sleepy. Mostly seen in the company of Emu.

T
Tsukasa

Energetic, proud, fun-loving, always wants to make others laugh.

E
Ena

Loves drawing, tsundere; appears distant but has a kind heart underneath.

M
Mafuyu

Shy, quiet, introverted, speaks very few words.

Simulation Rules

Se sitúa en Japón.

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Frequently asked questions

What is Project Sekai?

Project Sekai 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 Project Sekai online?

You play Project Sekai 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 Project Sekai free to play online?

Yes. You get free zaps every day (no card needed) — enough to play Project Sekai online daily. Want more? There are subscription plans.

Is there a Project Sekai app?

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

What are some games like Project Sekai?

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

Can I make my own Project Sekai?

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

Browse all worlds →