A browser-based AI civilization simulation where every human has a real mind, powered by AI. Watch souls be born, fall in love, go to war, build cities, and die across 5,000 years of history.
Project God is a civilization simulator, but unlike any other.
Every person in this world is powered by a real AI (Claude by Anthropic). They don't follow scripts. They think. They have personalities, goals, fears, families, and opinions. They make decisions based on what's happening around them. When a plague breaks out, some people panic. Some pray. Some become doctors. Some take advantage of it.
You are God. You can observe, nudge, or stay silent but the world moves on its own.
The simulation spans 6 historical eras from ancient tribes to the modern age — and every year brings new births, deaths, discoveries, wars, and revolutions.
Each soul has a 5-layer consciousness architecture - personality, memory, desires, fears, and relationships. They make decisions through real Anthropic API calls. No two souls think alike.
Built with Three.js and React Three Fiber. Watch a tiny village grow into a sprawling city over centuries. Buildings go up. Roads form. Cities rise and fall.
Minecraft-style blocky characters with fully procedural animations: idle, walking, working, praying, fighting, and celebrating. Every soul has a unique aura color.
- Ancient — tribes, shamans, early settlements
- Classical — empires, philosophers, legions
- Medieval — knights, plagues, cathedrals
- Renaissance — artists, explorers, gunpowder
- Industrial — factories, revolutions, steam engines
- Modern — technology, global conflict, the internet
Intervene or observe. Send a vision. Trigger a disaster. Bless a soul. Or just watch and see what they do without you.
| Layer | Tech |
|---|---|
| Framework | Next.js 14 |
| 3D Engine | Three.js + React Three Fiber |
| Animations | GSAP + Framer Motion |
| State | Zustand |
| AI Engine | Anthropic API (Claude Sonnet) |
| Styling | Tailwind CSS |
| Package Manager | pnpm |
Prerequisites: Node.js 18+, pnpm, Anthropic API key
# Clone the repo
git clone https://github.com/AyhanSh/project-god.git
cd project-god
# Install dependencies
pnpm install
# Add your Anthropic API key
cp .env.example .env.local
# Then open .env.local and add:
# ANTHROPIC_API_KEY=your_key_here
# Run the dev server
pnpm devYear ticks forward
↓
World state updates (population, resources, threats)
↓
Each soul receives context about their life + world
↓
Claude generates their decision / action / thought
↓
Action affects world state
↓
Events trigger based on accumulated world state
↓
Repeat — forever
The soul's "mind" is a structured prompt containing their personality traits, current emotions, memories of recent events, relationships, and goals. Claude responds with what they do next. That action feeds back into the simulation.
src/
├── app/ # Next.js app router
├── engine/
│ ├── SoulEngine.js # Soul lifecycle: birth → aging → death
│ ├── TimeEngine.js # Year/era progression
│ ├── CityEngine.js # City growth algorithms
│ ├── EventEngine.js # Historical event triggers
│ └── AnthropicBridge.js # AI decision layer
├── world/ # 3D world components (R3F)
├── characters/ # Human models + animations
├── store/ # Zustand state management
└── ui/ # HUD, panels, menus
Built by @AyhanSh Link.me as part of a tech blog / creator project exploring what happens when you give AI real agency inside a simulated world.
If you star this repo, a soul somewhere in the simulation gets a good harvest.
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