Super Fun 21 is a blackjack variation designed to enhance player engagement with unique rules and gameplay. The objective is to beat the dealer by getting as close to 21 as possible without going over. Key features include the ability to re-enter after splitting aces and double down on any number of cards. A player's blackjack beats the dealer's, and ties count as wins for the player. The game also offers special payouts, like a higher reward for a six-card 21.