Flow Link
Flow Link is a pipe puzzle. Pairs of matching dots sit on the grid; draw a pipe connecting each pair. The pipes may not cross, and every cell in the grid must be used. The small boards are gentle warm-ups; the large ones need real planning about which pipe goes where.
It is a calm, satisfying puzzle that plays well with a fingertip. Free in your browser, with hundreds of levels and a daily challenge.
A new puzzle is published every morning, Sydney time, and signed-in members keep their streaks and scores across devices.