Match the six forces of civilization. Spark a world from the first fire and climb ten eras to the origin of reality itself. Free to play, forever.
A Density6 game · no download, no login
Continue your civilization
Watch the opening
You inherited from a real civilization. Another Architect, long before you, left this behind. One day yours will be the ruins someone finds.
Best run on today’s seed — everyone races the same board. It resets each day so the race stays fresh; your all-time best on the Global ladder never does.
Free to play, forever · progress saves automatically.
What to do next
The Self-Governing tier is free, permanently, and you do not need a credit card to start. The full platform, every engine, every trade — free forever. Paying for a higher tier buys more volume and more leverage — it never unlocks a capability we were holding back.