ColorKu is the colorful Sudoku game with colorful wood balls instead of numbers. Start with a few balls in the pockets shown on one of the puzzle cards. Then try to fill the board so that no color is repeated in any row, in any column, or in any square of 9 pockets. Sounds easy? It's not! Includes 100 puzzle cards, wooden game board and 81 wooden balls; 9 different colors with 9 of each color. For Ages 8+.