Rules for the casino game 21 or blackjack, with links to pages on blackjack strategy, software and places to play online. Introduction · Equipment · Home Game Blackjack · The Dealer's Turn. Casino card games don't come more exciting or simple to understand than Blackjack. Since its introduction to land-based casinos in the twentieth century, the. Basic Outline Rules / How to Play. The game is normally played with four or six decks of cards, unless otherwise specified in the club. “Single Deck” Blackjack is. But that 16 is a loser unless the dealer busts, and the dealer will make 17 or better nearly 80 percent of the time with a 7 or higher showing. The dealer asked if he was sure, and another player piped in, "You can't HURT that hand," so the player finally signaled for a hit. Above, the basic rules of blackjack are described. In most casinos you may double down on any hand, but some casinos require an opening hand worth 11, 10 or slots games to play for free. If you're fairly sure that your hand will beat the dealer's, you can double your original bet.