Pell the barn owl is building nests. Drag a twig-piece from the branch onto the nest. When a whole row or column is full, it weaves shut and clears.

Place all three pieces and you get three more. Clear two or more lines at once for a combo, and keep clearing for a streak: both multiply your points.

Adventure goals: clear lines, reach a score, free the eggs (clear a line through each egg), collect the feathers (cover a feather, then clear its line) or tidy the old twigs (grey twigs; a knot needs two clears). Finish within the twigs you are given. Fewer twigs = more stars.

Classic: play until no piece fits. Zen: no game over. Daily Weave: a new nest each day, 30 twigs, the same for everyone.

Mouse: drag a piece, or click it and then click the nest.
Touch: drag a piece (it floats above your finger), or tap it and then tap the nest.
Keys: 1, 2, 3 pick a piece, arrows move it, Space or Enter places it, Esc cancels, H shows a hint, P pauses, M mutes.

Stuck? Wait a moment and a ghost finger shows a good move (turn Hints off in Settings).