"Got this set for my 4yo sun last year. it was our first experience with lego ever. Fantastic set.... it was difficult for him, so we were building it together.... within a week he was flying it.... a year later (he is 5 now) this set is still a hit with him.... he loves playing with all the vehicles.... when novelty goes,, he uses the set to build his own designs and then after a while back to original instructions..... hours-days-months of fun. thanks LEGO!"