 This rule applies even if the dealer has a total of 21 (blackjack).Other advantages to Super Fun 21 include being able to split a hand up to four times, a player's blackjack supersedes a dealer's blackjack, a player may "double down" at any point no matter how many cards he has been dealt, and the player automatically doubles their money with a hand consisting of five cards or more that total 21.The other major difference between Super Fun 21 and traditional blackjack is that a blackjack only pays 6 to 5 instead of the traditional 3 to 2 payout.