The original color sudoku board game To solve the game - set up the board according to the puzzle card Colorku can be played alone or with others. Ages 8+ Includes 104 puzzle cards and solutions – in 5 different difficulty level (Easy, Moderate, Challenging, Tough, Extreme) with puzzle card holder. 81 small colored wooden balls (9 red, 9 orange, 9 yellow, 9 light green, 9 dark green, 9 light blue, 9 dark blue, 9 indigo, 9 violet) Colorku can help sharpen your logic and deductive reasoning skills! Check out our store for additional games to play on the same board 11.5" X 11.5" - Weight 3.8 lbs