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Salt Worlds

Blinding evaporite flats on dry, salt-crusted rocks.

A salt world forms when sodium and chlorine share a dry, warm rocky surface: with no water cycle to dissolve them, the salts precipitate into planet-wide evaporite flats - halite plains, brine pans, and salt-crusted ridges that gleam almost white under their sun. Build one by pairing sodium and chlorine on a dry rocky recipe inside the warm band, and keep hydrogen low so no ocean ever washes the flats away.

See all salt worlds on Explore

A dark ringed planet hanging over the horizon of a rocky moon, its rings lit by a distant sun

New: Stand on Your Moons 🌒

A planet's surface view isn't the only ground any more. Press the surface button on a planet with moons and it asks where to stand: the planet itself, or any moon still in orbit, each tagged with what it became — ocean, ice, carbon, volcanic. Every moon gets its own ground and sky from its own physics: airless rock under a black sky, ice cracked by geysers over a hidden sea, sulfur plains shaking with eruptions, or orange haze you can't see the sun through. And hanging over the horizon, there's the planet you built.

Create your free account

Enter your email and we'll send a 6-digit code — no password needed.
We only keep your email and the username you choose. We never share or sell your email, and we don't send marketing — we use it only to email you a sign-in code. Read our privacy policy.

Send feedback

We're still building out the best experience we can — and we'd love your input. Tell us about features you enjoy, ideas you'd like to see, or pain points where something feels off, and we'll know where to look next.

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