Blackjack is a card game where the goal is to have a hand total closer to 21 than the dealer's hand, without going over 21. Each player and the dealer are dealt two cards.
Number cards are worth their face value, face cards (kings, queens, jacks) are worth 10, and aces are worth 11.
Players can 'hit' to receive additional cards or 'stand' to keep their current total. The dealer follows a set of rules to determine their actions.
After all players finish, whoever has a hand closest to 21 without exceeding it wins.