Orbit Pals

A sorting puzzle set in orbit. Little aliens sit around the rim of each planet; tapping one planet lifts the group at its edge, and tapping a second sends them hopping across. Each planet holds exactly four, which is the whole constraint — gather every species onto a planet of its own without stranding anyone on a full one. Levels are generated endlessly with a three-star rating, and there is a daily puzzle that is the same deal for everybody. Calm, bright, and sneakily hard once six species are in play.