For fans of Sudoku comes the Mad Cave Bird Games ColorKu puzzle, a colorful alternative to the ancient game. Instead of solving puzzles with numbers, you are using vibrant wooden balls instead. This wooden game board comes with 9 different colors of 81 balls. Perfect for setting on a coffee table for casual play, this puzzle also serves as an excellent decorative art piece. The logic-based game comes with 104 puzzle cards alongside its colored balls. The game is for ages eight and up and includes five difficulty levels for the different age levels. | Number of pieces: | – |