"My (now) 8 year-old son and I have been building together for several years and we saw this recently at the store. He has been wanting to build a set all by himself for sometime and decided this was to be it. Two weeks later he has finished and I love this set! I was delighted to see all of the clever hidden features! The AR is a neat addition, but this set really stands by itself without it. This will definitely be a featured piece at our house for the season for years to come."