Practice arithmetic by combining cards to reach the number 20. Play single player, versus, or quest modes. Track progress and compete against others. Adjust difficulty levels and customize settings. Share high scores and challenge friends.
Is a number-placement puzzle game. Place numbers 1 through 9 on a grid to satisfy sum conditions for inner circles and color groups. Use hints or a board calculator to assist. Solve puzzles with a clean, compact interface.
Solve problems and puzzles to progress through worlds and unlock character levels. Practice arithmetic and problem-solving skills. Track progress and compete against other players.
