Welcome to Zone 21 - Fast Math Solitaire a Brand New Mathematics game where you can win Real World Rewards and Cash Prizes (where available)! Remove the cards from the board and try to stay between 0 and 21. Keep the target number close to 21 for more points. Exactly 21 will give you best points. Some Key Features: • Classic Solitaire Card game with some amazing twists! • Clear the cards from table and stay between 0 and 21. • Ready for the challenge? Try to hit the target number 21 and get the great bonuses. • Play for free as long as you want without constantly sitting through ads. Multiplayer Features: • Play against friends and solitaire around the world! • Calculate cards as quick as you can! You have 3 minutes to beat your opponent. • Win and show off your scores on the leaderboard! Earn Prizes: • Challenge people from around the world • Put your skills to the test and compete to win cash prizes! • Cash rewards for top scorers (where allowed)! Download Zone 21 - Math Solitaire and test your calculating skills today! If you have any questions or proposals to the game, we hope you contact us at [email protected] If you have any questions about the Skillz system or cash tournaments please contact: [email protected]