Mad Cave Bird Games, LLC

Grand Rapids, Michigan USA






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Website 2019 by Ali and Matt Asperheim

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If you're a fan of Sudoku, you and your family will love this colorful alternative. Instead of using numbers to solve the puzzles, ColorKu uses brightly colored wooden balls.


Colorku is a logic-based number placement puzzle.

The object of the game is to fill a 9x9 grid with colored balls so that every row and column have a ball of each color with no repeats and each 3x3 grid has a a ball of each color with no repeats. The puzzles start with a partially completed grid and the players must fill in the rest.


The gameboard-crafted of solid wood-includes 81 balls in 9 different colors, 104 puzzle cards, solutions booklet, color conversion card and storage tray. There are 5 levels of difficulty.


Place it on the coffee table and you're ready whenever you feel like a challenge.


  • - 1 Wooden board made from recycled rubber wood
    - 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)
    - 104 game/puzzle Cards – in 4 different difficulty level (Easy, Moderate, Challenging, Extreme).
    - Solution sheet for each card