This was originally purchased as a gift for my 10 year-old son, but it looked too easy; so instead, I used it for a $5 dice game gift at our family Christmas Eve gathering. My 24 year-old cousin ended up with the puzzles and thoroughly enjoyed them. He shared the fun by giving four of the puzzles away to other family members, since they were all identiticle.
To my surprise, the puzzles were a huge hit with everybody! It was so cool to see all of the different designs transpire from the shapes. Best of all however, was seeing what I thought was going to be a bum gift turn into the highlight of our holiday night. They truly were a Christmas surprise.
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