Classic 21 is a popular online casino game that combines elements of traditional blackjack with a modern twist. Players aim to achieve a hand value of 21 or as close to it as possible without exceeding that number. The game typically features standard playing cards, where face cards are worth ten points, and Aces can be worth either one or eleven points. In Classic 21, players compete against the dealer rather than each other. The game includes various betting options and strategies, allowing players to double down or split pairs. This engaging format appeals to both novice and experienced gamblers, making it a staple in many online casinos.