Blackjack, also known as 21, is a popular card game played in casinos worldwide. The objective is to beat the dealer by having a hand value closer to 21 without exceeding it. Players are dealt two cards, with the option to "hit" for additional cards or "stand" to keep their current total. Face cards are worth 10, and Aces can be 1 or 11, adding strategic depth to the game. The excitement lies in the blend of chance and skill, as players must decide when to take risks while managing their bankroll.