ColorKu is a high-quality wooden board game based on the popular Sudoku puzzles. It uses 81 wooden marbles in nine distinctive colors placed on a 9" x 9" wooden grid to solve puzzles. The board is solid wood and 13½" x 13½". The game comes with 104 puzzle cards, but it can be used to solve any Sudoku puzzle.
— “We had people ask for a new colorized Sudoku called ColorKu,” Mike Castor, owner of Pentwater Toy Box in Pentwater, Mich., reported to TDmonthly. “We were able to find the manufacturer in the next county, got a hold of him in Grand Rapids and got a shipment in 48 hours. We sold a bunch.”
—  “We believe ColorKu is the best Sudoku product on the market. Players can solve puzzles individually or in groups, and it can be made competitive by setting up the same game on two or more boards,” said Mark Asperheim, president of Mad Cave Bird Games. “It’s also a beautiful piece that looks great on a coffee table!”
— Three of 63 retailers who spoke with TDmonthly named ColorKu as one of their top selling games.