Add a game to your favorites by clicking on the button on the game page.
When the sum of the numbers on your collected cards adds up to 10, you can remove that card from play. Keep playing until there are no more cards left to eliminate. You'll clear the stage once you've met your target. However, if your hand is filled with cards or you haven't cleared the target, you won't succeed in finishing the stage.
Tap a card to add it to your hand.