Assemble the Black Jack (21) faster than your opponent. Collect the sum of 21 (Black Jack) on your three cards. If the current sum of your cards differs from 21, you may discard any (one) card. Your opponent also tries to assemble the sum of 21 on his cards. He also may discard some card. After it, you both receive new card from the deck. When you have the sum of 21, you win the set and go to the next level. And the stripping girl will make each next level more erotic!