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Welcome to the global launch of Zero21: Solitaire Puzzle! 500+ Levels: Keep your total between 0 and 21 to clear the board without busting. Power-ups: Unlock the Undo, Discard, Hold Slot, and MIN/MAX cards. Daily Challenges: Test your brain every day for extra gems. Download now and test your math and logic skills!
Clear the board! Add or subtract cards to keep your total between 0 and 21.
Welcome to Zero21: Solitaire Puzzle, a fresh twist on classic card games that will test your math and logic skills. Your goal is simple: clear the board by playing all the layered cards, but you must keep your running total between 0 and 21. If you drop below zero or go over 21, you bust! Strategic Gameplay Navigate overlapping card formations similar to Mahjong or classic Solitaire. You can only play cards that are completely exposed. Plan your moves carefully as you balance positive (blue) and negative (red) cards to maintain the perfect sum. Powerful Lifelines Stuck on a difficult level? Use your hard-earned gems in the shop to unlock game-changing power-ups: Undo: Take back your last move to save your streak. Discard: Trash an unwanted card from the board. Hold Slot: Save a tricky card for the perfect moment. MIN/MAX/MID Cards: Instantly reset your total to stay alive. Features: Hundreds of engaging logic puzzle levels. Daily challenges to test your brain and earn extra rewards. Beautiful, clean graphics with smooth card-stacking mechanics. Play offline anytime, anywhere. Perfect for fans of traditional solitaire, math games, and brain training.