Blackjack or 21 is another great card game with a very low ‘house edge’. The players and dealer compete to reach 21 with five cards or less, and the winner usually doubles their money. Players using a basic strategy table can minimise the advantage to the bank to almost zero. This game is popular in casinos with people who like the atmosphere as much as winning, because they allow for long games, and give you a great chance of making gains.