"There is a misprint in the instructions, where the steps go from 27 to 29 with no step 28! Very annoying to the 3-year old child putting this together. He liked it otherwise. He asked me check a few steps, although he had done them correctly. So I would say it is slightly harder than some of the "Age 5" models. I love these easy small sets for him. Lets me get things done around the house. Please make more of the Age 5+ sets!"