Black Jack, also known as Twenty-One, is the American version of a game known in Germany as 17+4.
Object of the game
Black Jack is played with 6 decks of 52 cards each. A player plays his or her hand only against the dealer’s hand (the House) and the object of the game is to get your hand to total 21 without going over 21. At the end of the game, the hand closest to 21 without going over, or busting, wins. However, if a hand busts - goes over 21 - it loses and the bet is collected immediately by the dealer.