I am not rating the toy, but the manufacture. The kids never used the toy because J5 is missing two black pens a serious safety hazard. The manufacture needs to make sure all parts are included before sealing the box. We spent 1 hour and 45 minutes putting some of this toy together. When we realized J5 was missing pieces. It was hard enough trying to connect these tubes now we have to 1.) undo our hard work 2.) repackage it. 3.) drop it off to return 4.) probably have to additional postage fee for returning 5.) a lot of time was wasted.