Solitaire
Klondike: build each suit up from ace to king on the four foundations. In the tableau, stack cards down in alternating colors; only kings go in empty columns.
Drag cards to move them, or tap a card to send it to the best legal spot (foundations first). Tap the deck to draw; tap the empty deck to turn the waste pile over. Face-down cards flip automatically when uncovered. Ctrl+Z undoes.