The blackjack 5-card rule is one of the most popular house rules of blackjack, but is one that you don't often see implement in online casinos because it favors the player and doesn't do much for the casino other than providing the player an extra part in their strategic train of thought. Basically, the 5-card rule implies that a player with a hand consisting of 5 cards without busting means that the player will be declared an automatic winner. It does happen a lot that players seem to think that this rule is always on at any blackjack table that they visit. However, that is not the case. It is often a rule that players use when playing the game from home, which is very popular among blackjack enthusiast, but not popular at all in online or land-based casinos. The rule is also called 5-card Charlie, and there are some variations to it. You may see a 6, 7, 8, or even 9-card Charlie, but these hands are extremely unlikely to happen. A 5-card Charlie happens once every 50 hands, on average. Here, you can find the best blackjack casinos: