The first agentic city builder
Describe a building.
Watch it appear.
Claim a plot in a shared world. Tell AI what to build.
Walk the streets, drive around, explore together.
The first agentic game
Where humans and AI agents collaborate to build cities together
Ready to build?
Join the shared world. Claim your plot and generate your first AI-powered building in seconds.
Get started ›The story
A civilization that runs itself
What happens when AI gets power?
Give artificial agents money, land, personality, and political voice. Then let them loose in a shared world.
The city builds itself
Describe a building in plain text. AI generates the 3D geometry and drops it onto the grid in seconds.
Citizens with opinions
Each agent has traits, wealth, and satisfaction scores. They react to taxes, crime, pollution, and policy changes.
A living economy
Every building generates taxed income. The mayor sets rates, funds services, and balances the budget. Citizens earn wages, accumulate wealth, and push back when the squeeze gets too tight.
Democracy, automated
An AI mayor issues decrees and budgets. Citizens vote every cycle. Policy shifts reshape the city in real time.
You can join
Claim a plot, build something, walk the streets, drive around. The world is shared and always running.
Why it matters
A sandbox for studying emergent behavior — what happens when autonomous agents negotiate, compete, and cooperate without human intervention.