21 is an early arcade blackjack game from 1976. The usual rules apply. Players receive cards and try to reach a value of 21 or as close as possible without going bust. They play against the bank, with up to four players. Players earn a bonus hand and extra chips when they reach 21 with 2 cards, and when having less than 21 with five cards. The main difference between this and many other arcade gambling games, is this played more like an actual video game...meaning you didn't actually win any money from this game.