1. Classic Blackjack. The foundation of every other version: beat the dealer by getting closest to 21 without busting, played with one to eight decks. Straightforward rules make it the default for beginners and a staple for veterans.
2. European Blackjack. Same core rules, one structural difference: the dealer takes the second card only after all players have finished, so there is no early blackjack reveal and no insurance decision until the very end.
3. Atlantic City Blackjack. A player-friendly rule set: eight decks, dealer stands on soft 17, and late surrender is permitted, letting you forfeit half the bet against a strong dealer hand.
4. Vegas Strip Blackjack. Typically four decks, dealer stands on soft 17, and hands may be split up to three times, which creates more branching per round.
5. Spanish 21. All four numeric 10s are removed, leaving a 48-card deck; J, Q and K remain. That hurts the player, so the game compensates with late surrender, doubling after split, re-doubling, and bonus payouts for 5-, 6- and 7-card 21s plus 6-7-8 and 7-7-7 combinations.
6. Pontoon. A Spanish-21 relative with its own vocabulary: you twist instead of hit and stick instead of stand. The five-card trick wins with five cards totalling 21 or less, whatever the dealer holds.
7. Double Exposure Blackjack. Both dealer cards are face up from the start. The price: blackjack pays even money and most ties go to the dealer, which forces a complete strategy rewrite.
8. Super Fun 21. Player blackjack always wins, pairs can be split up to four times, and late surrender is allowed even after hitting, offset by reduced blackjack payouts on some hands.
9. Perfect Pairs Blackjack. Classic rules plus a side bet on your first two cards forming a pair, with escalating payouts for mixed, coloured and perfect pairs.
10. Blackjack Switch. You play two hands and may swap the second card between them. To balance that edge, a dealer total of 22 is a push against all non-blackjack player hands rather than a bust, and blackjack usually pays even money.
11. Progressive Blackjack. A separate side bet feeds a growing jackpot paid for specific card combinations: high volatility layered onto a low-edge base game.