Orbit Sort

The game

Orbit Sort is an orrery puzzler of mass and motion: glass planets ride a scrolling cargo belt beneath a velvet-black sky, and it is up to you to hang each one on its engraved brass ring. The rings keep a strict order — heaviest nearest the star, where the orbit runs fastest — and a planet dropped on the wrong ring is flung clean off the mechanism. Built to teach gravity by feel: every arm you attach visibly orbits at its Kepler-scaled rate, and the gear-driven menus, Roman-numeral plaques and glinting graduations make the whole thing read like a museum clock that happens to bite. Complete the system before the chronometer winds down, then the next system rolls out heavier and faster.

How to play

• Click or press Enter on the title card to wind the orrery and start the round.
• Drag a planet out of the cargo belt with the mouse or a finger and drop it on a ring; a +100 snap and a golden burst confirm a correct seat.
• Rank by mass (printed under each planet): heaviest goes to ring I beside the star, which orbits fastest; lightest goes to the outermost ring.
• A wrong ring, an occupied ring, or drifting into the star flings the planet back to the belt — no fling frames in a perfect round.
• Fill every ring before the seconds dial empties for a time bonus (10 per remaining second); the orrery then completes and spins as a whole. If time runs out the orrery stalls and the run ends with your score.
• Press P or Esc to pause; Enter or click starts the next system after a completion.