Blackjack or Twenty-One is a comparing card game between usually several players and a deale where each player in turn competes against the dealer, but players do not play against each other. is played with one or more decks of 52 cards , and is the most widely played casino banking game the world. The objective of the game is to beat the dealer in one of the following ways: Get 21 points on the player's first two cards (called a "blackjack" or "natural"), without dealer blackjack; Reach a final score higher than the dealer without exceeding 21; or Let the dealer draw additional cards until their hand exceeds 21