I got 2 of these games as gifts for Christmas and ended up keeping one. We opened it to investigate and got hooked immediately. My 7 year old granddaugher sat for a long time trying to master putting all those pieces back and at the same time hooked my engineer and lawyer kids. WARNING this is addictive.
I ordered this game for my ten year old boy who loves video games. When I received it, I didn't think it would be interesting. However, we read the directions, and this game became our nightly entertainment. It is very challenging, and it made both of us use parts of our brain we didn't even know we had. I highly recommend this game for everyone.