A persistent, server-hosted world-simulation game
In developmentThe theater of the world.
A whole civilization lives without you — thousands of people who learn, trade, believe, and die, writing their own history. You are one of the few minds inside it that can truly choose.
Be the merchant who sees a shortage a kingdom away. The artisan who invents the method no one has stumbled into. The founder who reads a brewing schism and is the only one positioned to profit from it.
The world doesn't need you. That's exactly what makes everything you do matter.
One simulation, three tempos — history runs long before you arrive, then keeps running because you're in it.
Centuries of history simulate before you arrive — seeding a world with depth, memory, and consequence.
Thousands of people learn, trade, believe, and die, writing their own history in real time.
Enter a living world and bend its course — many players sharing and shaping one persistent history.
A handful of ideas set Theatrum Orbis apart — and every way you play draws on them.
It grew for centuries before you arrived and keeps moving as you play — its people learn, trade, believe, and endure.
Found a guild, grow it from a single hall into a power, and set your sights on ruling a world.
Match your ambition against rival guilds and factions, player-led and AI-led alike, for land, trade, and rule.
Read where demand is rising, move to meet it, and turn a shortage into a fortune.
Discover techniques, teach them to your allies, and turn what you know into an edge.
However you choose to rise, the world responds — and remembers. See all eight →
Chart wild country, name what you find first, and carry maps others will pay to follow.
IIDiscover techniques new to your region, combine ideas into something original, and make the knowledge your own.
IIIRead where demand is rising, move goods to meet it, and grow a stall into a trading house.
IVRaise homes, plan cities, and crown them with monuments travelers steer by.
VWin the field from a lone duel to a marching army, and pass your tactics to those who follow.
VIFound a guild, grow it into a power, and contend with rival guilds and factions for territory and rule.
VIISpread a faith, rally a following, and build a name that opens doors across the world.
VIIIClimb from your first shelter to a seat of power, braving real peril where only misadventure ends your story.
★ Under the hood
Much of what makes the world feel alive comes down to one system: knowledge that spreads from person to person. A craft, a creed, and a guild are all memes — they pass between people, gate what can be made, carry belief, and drive rises and falls. It is the engine of the living canvas, and one of the systems you learn to read, join, and turn to your advantage.
Explore the meme system →Play it, host your own, or manage your holdings from anywhere — three faces of one living world.
Live inside a living world — explore, trade, build, fight, and build a legacy that outlasts you.
Desktop game Create & HostGenerate a world, author its cultures and memes, simulate its history, and host it for others to enter and change.
Desktop application Manage anywhereRun your factions, businesses, and characters from the browser between sessions — the world keeps turning while you plan.
Web applicationEvery world is a persistent, operator-hosted place with its own history, cultures, and rules. Browse them here — and in the game's server list — then step in.
hosted by the Aldenmoor Compact
hosted by Saltwind
hosted by the Grey Wardens
Illustrative worlds shown. The live directory opens when the first servers do.
Be there from the first age
Theatrum Orbis is in active development. Get occasional dev updates — new systems, the first playable world, and when servers open.
Or follow along on GitHub ↗ · read the design status · explore the vision.