Pocket Universe

You start with nothing but an empty void and a handful of tiny spheres, and within seconds you're scaling them up into planets. That's the whole hook of Pocket Universe: watch mass turn a speck of dust into a world, then wire those worlds into a working solar system before anything collides.

The physics does the heavy lifting, but you're the one deciding when a sphere is big enough to earn orbit and when it's still too small to survive out there. Space doesn't go easy on half-finished planets, so timing your growth spurts matters as much as patience does.

It plays like a quiet puzzle on the surface, but the satisfaction comes from the same place as Mechanics games built on physics and cause-and-effect - one wrong scale-up and your careful little cosmos wobbles. If you like that kind of hands-on tinkering, it sits comfortably alongside other Skills games and the wider Adventure games on the site.

No download, no signup, just you and an empty pocket universe waiting to be filled - free, right in your browser.

Grow empty space into a working solar system by scaling up tiny spheres until they have enough mass to become full planets, then arrange them so they orbit safely instead of colliding.

Click or tap a sphere and grow it - keep it small too long and it won't hold together as a planet, but push it too fast near others and you risk a collision that undoes your work.

Build outward gradually: get one stable planet established before you start growing the next, since a crowded, half-grown system is the fastest way to lose progress.

Take it slow - Pocket Universe rewards patience over rushing every sphere at once.