The rules of blackjack are quite simple. The basic objective of the game is to draw a total closer than the dealer or reach the total of 21. You are given two cards in the beginning and receive additional cards unless you decide that you are close enough to 21 or your total is greater than 21, in which case you lose your wager. After receiving your first two cards, you can play Double Down, which means that you double your bet and receive exactly one card. This is a good strategy in case you have a hand that requires exactly one hit, and you are relatively confident that your hand is better than the dealers.