Zero 21 - Card Game is a challenging yet simple numbers game! Your goal is to keep your total between 0 and 21—it sounds easy, but it’s trickier than you think! With a solitaire-style twist, this game offers a fun and relaxing way to unwind while keeping your mind sharp. Collect number cards from the board without exceeding the limit and see how far you can go! A fun version of Solitaire. Try to get rid of all the cards by choosing ones that, when added to your card, will add up to less than 21 or more than zero. It's harder than it sounds but so much fun! Enjoy the challenge!