While Spanish 21 may not have been the original version of the game, it was the first recorded form of blackjack. The closest hand to twenty-one is the winner. Like all other forms of twenty-one, you hope to build a hand of two or more cards without the cards going over 21. Most online casinos offer the game, while the big software companies like Microgaming, Playtech, IGT, and RealTime Gaming have their own versions of the game.
If you live in Australia, you’ll know a quite similar game under the name Australian pontoon.
Most gambling establishments in the United States didn’t offer the game until 1995 or later. You’ll find the game played all over the world, though it originated in European casinos.
Spanish 21 is a common form of blackjack played in many of the larger casinos.