Spanish 21 differs from traditional blackjack primarily in its rule variations and the removal of the ten cards from the deck. This absence of tens alters strategies and outcomes, as players have different odds of forming strong hands. The game allows for more favorable player options, such as the ability to surrender after doubling down, late surrender, and special bonuses for certain hands. Scoring also varies; for instance, a five-card 21 usually beats a regular 21, enhancing the potential for high-scoring plays. These differences create a unique dynamic, making Spanish 21 appealing to both casual players and seasoned gamblers seeking variety in their gaming experience.