Blackjack and 21 are essentially the same game, with the objective being to reach a hand value of 21 or as close to it as possible without going over. In some cases, the term "21" may be used to refer to the game played in a casual setting, while "Blackjack" is often used in a casino context.

Blackjack, also known as 21, is a popular casino card game in which players compare their hand of cards with that of the dealer. To win at Blackjack, a player must create a hand with a higher total than that of the dealer, but without exceeding 21. Make better decisions. Learn the rules of the game before you play.