Lanternbloom

Lanternbloom runs a gentle matching loop built around a string of lanterns: tap a firefly and send it flying to the string, where three of the same color light up a lantern. There's a limit of seven fireflies waiting on the string at once, and letting that fill up ends the night — so working out which fireflies to send, and in what order, matters more than reacting on impulse.

Undo and a hint are both on hand for a tricky spot, and the whole experience leans into a quiet, nighttime mood rather than any kind of time pressure.