Blackjack, also known as twenty-one, is the most widely played casino banking game in the world. Blackjack is a comparing card game between a player and dealer, meaning that players compete against the dealer but not against any other players. Blackjack is played with one or more decks of 52 cards. The object of the game is to reach 21 points or to reach a score higher than the dealer without exceeding 21.
The dealer has to take hits until his cards total 17 or more points. (In some casinos, the dealer also hits on a “soft” 17, e.g. initial ace and six.) Players who do not bust and have a total higher than the dealer, win. The dealer will lose if he or she busts, or has a lesser hand than the player who has not busted. If the player and dealer have the same point total, this is called a “push” and the player typically does not win or lose money on that hand.