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ColorKu is a Sudoku-like game with color marbles instead of numbers that exercises all four lobes of your brain in one fell swoop.

In other words, it’s kind of like those “miraculous” machines they advertise on late-night infomercials claiming to exercise your entire body with one simple move. Except in the case of ColorKu, it’s true.

And you can get the aforementioned quadruple lobe workout without the annoying spokesman and “Just 17 easy payments of $42.95 each!”

Yep, for under 40 bucks, you can get a beautiful solid wood game board, countless fun game nights and one heckuva brain workout.

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The Idea

Place one ball of each color in every row, column & square to complete each challenge.

The Brains

Rely on a large network of brain areas as you identify patterns & missing pieces.

The A-Ha

More than 100 puzzle cards give you starting formations ranging from beginner to expert.

Brain Health Expert Says

Rely on a large network of brain areas in all four lobes as you recognize the patterns of the colors.

The Brain Coach Says

Colorku is a great Sudoku option for people who may not love numbers, it's so pretty and colorful, and looks great if you leave it out on display. It comes with over 100 puzzles, which makes it a great value, too.

Product Details

Brain Category
warningsCHOKING HAZARD -- Toy contains a marble. Not for children under 3 yrs.
Recommended Age8+
Inside the Box
  • 81 wooden balls (9 different colors)
  • 104 puzzle cards (5 levels of difficulty)
  • Wooden board
DepartmentVisual Perception
# of Players1+

Customer Reviews

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Love it!


Love this twist on sudoku. Its very satisfying to be able to place the pieces into their spot as opposed to writing in the number. The colors make even seasoned sudoku solvers think about what is needed to fill the square.

Love it.


I played this game during numerous occupational therapy sessions to aid recovery from a head injury. It is a lot more challenging than it looks; you won't be disappointed.

Great game!!!!


I am a big sudoku fan. When I saw the colorku board I had to get my hands on it. Not only do I love it my kids love helping me figure out how to solve them. This is a 10 in my book!

Love it!


I am a tech geek and can easily play games and puzzles online or on my devices, but I still love physical puzzles. It took me awhile to buy Colorku even though I've been wanting it for sometime. I'm glad I finally bought it. It looks great on the coffee table and easy to play on my lap while I binge on Netflix shows. It's also great to play with my daughter. I showed her with numbers but I think the colors work better. The board is also large and inviting for people to watch or participate. I highly recommend it for puzzle lovers.
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How To Play

How to Play:

Choose one of the ColorKu puzzle cards. Set up the board with the colored balls as shown on the card. Same rules as Sudoku only with color; there cannot be more than one of each color in any column, row, or square.

How to Win:

Fill in the remaining spaces with colored balls so that there are not any colors that repeat within any of the columns, rows, or squares. There are over 100 puzzles to solve.

Download PDF Rules Of The Game