A very popular American Casino game found being played throughout the world is Blackjack. In some places this popular game is also known as 21. This is a very interesting game played with decks of cards. The idea is to beat the dealer and you can do so if your cards add up to more points than the dealer himself while the score does not exceed 21. This is a game played with 52 cards without jokers. In big casinos they use several decks mixed together which is called a shoe. This is fundamentally a two player game, but more players can join in. The game is between the players and the dealer, not among the players. The players do not cooperate nor do they play against each other.

The cards are valued as follows: An ace can be 1 or 11, the cards from 2 to 9 are taken at their face value, and 10, and Jack, Queen and King are all valued at 10. If say you have an ace and 2 other cards, 6 and 7, the total value will be 24 if you take Ace as 11 and your point should not go above 21, so here you take the value of Ace as 1 so it makes 14 instead of 24. And if the cards are 1 and 4 and Ace, here you take the value of ace as 11 and the total points will be 16. Your only aim should be to get a total point more than that of the dealer and it should not go above 21.

The players and the dealer receive two cards each at the start of the game. The dealer will keep one card face down and one card face up. The players' normally keep their cards face up. If a player has an ace with any other card that carries 10 points, like Jack, King, Queen or a card with 10 itself, he wins, as the total comes to 21 which is a blackjack, but if the dealer also has a blackjack, the player does not win, it is a push for the player and all the other players who do not have a blackjack lose the game.

These are the basic rules of blackjack. There are many side rules which can be used immediately after a deal before more cards are taken, like splitting up, surrender doubling down, insurance money etc. Rules might change according to the Online Casinos decision.