Gravity Pool
Orbit Well is pool, played around a star. Planets circle it on three orbits; you have a comet and a handful of shots. Hit a planet against the direction it travels and its orbit decays until it falls into the star. Hit it along its orbit and it climbs away instead.
Sink every ringed planet before the shots run out to clear the rack. Every planet is drawn as you play, and every sound is generated on your device.