Although there are several variations of the game, the basic rules that apply is the same. Online Blackjack Rulesīefore you start playing blackjack online, it is essential that you understand the rules. As for the other cards, they are valued based on their number. Ace is also valued at 10, but there are cases where it is valued at 1. Face cards such as J, Q and K are valued at 10 each. As we pointed out earlier, the game's object is for players to have a hand that is higher in total value than what the dealer has but not exceeding 21. Unlike poker, the game is played against the dealer and not other players. Blackjack is a table game played with one or more decks of card.