Spanish 21 is played with 48-card Spanish decks, although standard French suited 52-card decks are used with the 4 ten-spot cards removed. All cards have the same values as in blackjack. The dealer gets a hole card. Like traditional blackjack, the dealer hits on 16 and stands on 17.
Is Spanish 21 More Difficult than Regular Blackjack? No. The rules are nearly the same. The only difference in gameplay is that Spanish 21 uses decks with the 10s removed, and there are more options for betting.