"Twenty-One" is a popular card game often played in casinos, where the goal is to have a hand value as close to 21 as possible without exceeding it. Players are dealt two cards, and they can choose to "hit" for additional cards or "stand" with their current total. The game typically uses one or more decks of standard playing cards. In Twenty-One, the cards have specific values: numbered cards are worth their face value, face cards (kings, queens, and jacks) are worth 10, and aces can be worth either 1 or 11. The game is also known as Blackjack in many places, especially when played against a dealer.