The objective of the game is to achieve 21 points. Press on Hit Me to ask for a card and press Discart to reject the card. Each time you get 21 points you can multiply your score.
In this game you will have to win the major number of cards to your adversary. Choose the category of your superior card, and if your score is higher than the card of your adversary in the same category you win his cards. If you lose you lose your turn.