Ring instrument

How this works

Balls bounce inside a rotating ring, each hit playing a note. A ball that flies out through the ring's gap escapes, spawning two more in its place — the population keeps growing, and the pitch climbs with each escape. A ball that has bounced enough times freezes in place, becoming a fixed obstacle for the rest.

There's no score and no way to lose — it's an instrument, not a game. Drag the sliders below to change the sound: hue recolours the balls, and the rest reshape the physics (starting balls, speed, gap size, how many bounces before a ball freezes, the maximum population, and gravity).