Popular variations of Blackjack include games that introduce unique rules or gameplay mechanics to create different experiences. One well-known variant is Spanish 21, which uses a Spanish deck and offers players the option to hit after doubling down. Another variation is Blackjack Switch, where players are dealt two hands and can swap cards between them for a better chance of winning. Progressive Blackjack incorporates a side bet for a progressive jackpot, appealing to those who enjoy additional risk and reward. Other variations may feature different payouts for natural blackjacks, additional betting options, or changes in dealer rules. Each variation enhances the classic game with its own distinctive twist, attracting players looking for fresh experiences while maintaining the core elements of Blackjack.