Spanish 21 is a variation of Blackjack with a few key differences. The game is played with a 48-card deck, removing all 10s, which changes the odds. A player's 21 always wins against a dealer's 21, even if the dealer has a Blackjack. Players can double down at any time, including after splitting, and can also re-split aces, which offers more flexibility compared to regular Blackjack. Spanish 21 features bonus payouts for special hands, like a 7-7-7 of the same suit, and allows for both early and late surrender options. Additionally, the dealer must hit on a soft 17, unlike in some Blackjack games where the dealer may stand. Overall, Spanish 21 offers more favorable rules for players in terms of flexibility, payouts, and strategy.