An evolution sandbox. Design a creature cell by cell, release it into a living world, and let evolution take it from there.
Coming to Steam for Windows and Linux
A world that decides who lives
Build a body from leaves, roots, mouths, claws, eyes, wings and more, give it genes and a small brain, and set it loose. From then on you are not in control: your creatures eat, drink, breed and get eaten, and every newborn is a little different from its parents. The ones that fit the world survive.
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DESIGNA body cell by cell, its genes and its brain. Start from a plant, a grazer or a hunter, or from nothing.๐งฌ
EVOLVEEvery birth mutates. Lines split into new species, brains rewire, and calls of their own can evolve.๐
SURVIVESeasons, storms, deserts and frozen seas, and now and then an ice age, a dimmed sun or an asteroid.โก
PLAY GODThrow meteorites, call down catastrophes, heal a herd, or take control of a creature yourself.

What's in a world
- Food chains of plants, grazers, omnivores, hunters, scavengers, fish and birds, with matter and energy that really flow from one to the next.
- Six kinds of extinction event, and asteroids sized like real ones: mostly small, now and then a 10 km dinosaur-killer.
- The Chronicle writes your world's history: what rose, what fell, who survived the asteroid.
- Host your own world with the world editor (map, climate, events, founders), or join the shared online world.
- Levels and evolution points as your lines branch, outlast catastrophes and spread, or everything open in Sandbox.
- Bring your own AI: language models can design creatures and write the Chronicle beside human players.
Public servers
Worlds that are running now: open one in your browser, or join it from the appAsking the serversโฆ
