"I was at a Train show, (to see the Lego layouts). I had my granddaughter (15 Months), and I bought this. It's true the gears don't snap on, but they do set on easily, she liked playing with the set. She could twist the top, and the other gears would turn. I added a few extra blocks that we already had and made a nice carousel for her. I do plan on getting a second set to expand the gears."