Blackjack Blackjack is the go-to card game for those hoping to get a rapid return on their investment by playing a game with simple rules. The goal of the game is to achieve as near to a score of 21 as possible without exceeding it. Doesn’t it appear to be straightforward? That’s correct. The only additional requirement is that you must always go closer to the dealer than the dealer, which adds a layer of complexity to the game. However, the game has a variety of rules and formats. The house edge is frequently less than 1% depending on the Blackjack type you play. This indicates that the RTP is greater than 99 percent.