Press the right Arrow to hit, the left arrow to stay. If you have 21, just press the left arrow and the dealer can't win. After you finish your first game, press space to reset.
How to Play Blackjack This version doesn't use cards, but I'd recommend playing with cards. You and the dealer both begin with two cards, which add together to equal your score. When you hit, you draw another card and increase your score. Your goal is to get as close to 21 as possible without going over (busting). When you stand, you are below 21 but think you are closer than the dealer. The dealer will hit until they have a higher score than you or higher than 21. If they have a higher score than you, they will win. If they are higher than 21, you will win.