REVERSE 21

• You start at 21. Every card you draw subtracts from your total instead of adding.
• Number cards subtract their face value. Jack, Queen, King each subtract 10.
• Ace subtracts 1 or 11, whichever keeps you from going below zero.
• Go below 0 and you bust — instant loss.
• Hit to draw another card, Stand to lock in your total and let the house play.
• The house keeps drawing until its own total would stand at 17 or better in regular blackjack terms — here, until it's down to 4 or less.
• Whoever lands closer to 0 without busting wins. Same total is a push.