This was a Christmas gift for my 9yr old son. It combined his love of legos & remote control toys. First, he made the truck and used it for a week or so.... then it all got incorporated in with the rest of his legos. He has made many different creations using this set and he's always thinking of new things to build using it. Once in a while...some of the bricks won't quite fit right with the legos...but...that has been rare......