You can play Zero21 Solitaire in your browser for free. Zero21 Solitaire is undoubtedly one of the most interesting card games this year. It has addictive gameplay and 2D art style. It is also a very special blackjack game. Blackjack is also known as BlackJack. Your goal is to make the cards in your hand. The sum of the points does not exceed 21 points and is as large as possible. Can you guarantee that your cards are better than the dealer's cards? You need to calculate the maximum and minimum of the sum of all the cards in advance, use your mathematical talents, and make precise calculations. If you like this game, don't forget to share it with your friends!