a simulation engine for generating living worlds
One engine.
Infinite worlds.
One engine simulates the same forces in any world: people, traits, resources, institutions, events, and the history they leave behind. We're starting with a medieval dynasty because it's the fastest way to find out whether the loop is fun. It isn't the ceiling.
Get early access
free while in beta · no spam, one launch email
Seven generations. About twenty minutes.
A generation is one round. You make three decisions, then the engine runs the years: people work, age, marry, have children, and die. The survivors grow up and it comes round again.
Seven rounds later your civilization ends. Everything you chose along the way is still in it.
Choose who has children together.
traits pass down
Put every adult to work: farmer, scholar, warrior, trader.
sets what you produce
One event forces a call. Plague, raid, feud, a stranger at the gate.
odds shown before you commit
one sitting · no save scumming · every run is different
Nothing resets. Ever.
Choose who marries, who studies, who rules. The engine works out the consequence and writes it into law. Every important event becomes a permanent modifier your civilization keeps for good.
modifiers never expire · history becomes identity
same six primitives · every reality
The engine doesn't know what a knight is.
It knows only people, traits, resources, institutions, events, and the legacies they leave behind. Swap the nouns and the same simulation runs any reality, the way Unreal doesn't know what game you're making. In all of them, code owns the numbers. The AI never decides an outcome.
Describe a world. The engine runs it.
Writing dialogue is the small version of this. The real unlock is an AI that writes the whole world. Give it one sentence, “a civilization of sentient mushrooms that reproduce through spores”, and it defines the occupations, resources, technologies, institutions and myths. The engine takes it from there.
Once a world is running, the AI narrates every event the engine computes, and it never decides one of them. Working out what actually happened stays the code's job.
▷a civilization of sentient mushrooms
engine · steel discovered · weapon quality +8
“After years studying volcanic ore, Arlen drew the first steel blade, and the balance of the valley shifted for good.”
Every population evolves itself.
People (or whatever inhabits your world) inherit weighted traits from their parents, plus a small mutation. The same system that grows a medieval bloodline grows a colony's lineages or an alien species. Below is one line, six generations deep, from scenario 01 · emberfall.
Kael Emberborn
Arlen the Scholar
Sera Ashwood
Bram of the Forge
Wren the Quiet
six generations later, one of these lines carries your world's legacy
Every civilization falls. You choose what survives.
Collapse isn't losing. It's how a run ends, every time, by famine or invasion or a succession nobody survived. Before the next world begins you keep exactly one thing from the old one.
House Veyra
Two founders begin with their traits.
Skyforged Iron
One discovery starts already unlocked.
The Long Winter
A permanent bonus to one resource.
Which is the real question the game asks: knowing everything you know now, could you build a better one?
The scenario changes. The engine doesn't.
Same primitives, new nouns. Change what a person is, what they build, what they fear. The simulation doesn't care. Medieval is just the world we're proving it in first.
first scenarioEmberfall
medieval villageBloodlines, forges, and feuds across seven generations.
in developmentNew Kepler
orbital colonyA civilization raised in the dark around a dying star.
on the roadmapVeilcity
neon districtRival guilds, black markets, and engineered dynasties.
on the roadmapSaltmarrow
alien reefA species that thinks, breeds, and builds beneath the tide.
one engine · every genre · the reality is just a starting seed
Found a dynasty before the world begins.
A founding membership for the first believers. Everything on the waitlist, plus:
- ▹First access when the simulation opens
- ▹Your house name written into the world's founding chronicle
- ▹Founding Dynasty badge on your profile
- ▹Direct line to the team in a private channel
What kind of world will you create?
One engine, every reality, and nothing ever resets. Worlds fall, and their legacies carry into the next one. Be there when the first one begins.
free while in beta · no spam, one launch email