Shed all 20 cards first. Play equal or lower, play a Ten to clear the pile, lay four of a kind to call a Sweep. Play too high and you scoop the pile. Lowest score wins.
Be the first to get rid of all 20 of your cards. When someone goes out, everyone else scores points for the cards they still hold. After the last round, the lowest total wins.
You get 4 face-down cards, 4 face-up cards lying on top of them, and 12 in your hand. Leftover cards form the draw pile.
King is highest, then Queen, Jack, 10, 9 down to 2. Ace is lowest.
Once the face-up card on top of a face-down card is gone, tap the face-down card to flip it blind onto the pile. If it is too high you pick up the pile. A Ten clears it.
Instead of playing, you can tap the draw pile. The top card goes straight onto the pile and that is your whole turn. It follows the same rules as a blind flip.
King, Queen, Jack = 10 points. Ten = 20 points. Ace = 1 point. Every other card is worth its number.