Play as San Diego, California
San Diego is a sovereign city-nation of California — largest economy in the coalition, tech, film, agriculture, ports. California sits above it as the federation head, the Crown of the bloc, the way Washington DC once stood over America. San Diego runs its own treasury, its own resources, and it offers citizenship to anyone who asks. Claim it, found your nation, and your capital lands on the real coordinates of San Diego.
San Diego is offering citizenship
Open borders. Anyone can apply, no reputation check, no invitation needed. City-nations carry 50% more money and resources than an ordinary state, and they share what they hold with their citizens.
Request citizenship in San Diego
San Diego keeps open borders and reviews every application. Sign in to apply.
Apply for CitizenshipCalifornia is the Crown
California doesn't compete with its cities — it presides over them as the federation head, the seat of the bloc, the way Washington DC once stood over America. It sets the bloc budget, fields the federal army (30,878 soldiers, 888 tanks) and holds a balanced posture. If you go to war, you can pay the Crown in SFC dollars to fight alongside you, provided it's backing three or fewer wars at that moment.
Other city-nations of California
Questions about San Diego
What do I do first after claiming San Diego?
Set your tax rate, collect your first day's revenue, pick a government, and build infrastructure before you buy soldiers. Military upkeep sinks new nations faster than any enemy does.
Why claim San Diego instead of another state?
Location shapes trade proximity, who sees your mobilisations, and which coalition armies are cheap to reach. San Diego puts you in California's wider interior, which is a different opening than the capital.
Is playing from San Diego free?
Yes, entirely. No download, no paywall, no premium tier — San Diego plays in your browser on desktop or phone.
Can two players claim San Diego?
Each player anchors their own nation, and multiple nations can trace their origin to San Diego. What separates you is what you build — population, treasury, technology and army.
Which states border San Diego?
Inside California you'll be neighbours with Los Angeles, San Jose and San Francisco. Any of them can be claimed by another real player, so the state you pick decides who's next door.