My 7yr old caught on to the rules quickly with only a couple of reminders throughout the game, and loved it, and I enjoy it also.  I found the construction of the blocks to be fine despite other reviewer's complaints, although I agree that it would be better if some of the colors had more contrast. In bright light it is fine, but  more subdued lighting requires a closer look to tell the difference between green and blue, or orange and red. Overall, great game, with enough challenge to keep it fun. Recommended.