Our kiddo who was born an engineer has always been more interested in how things are made/work vs actually playing with toys. We knew since she was 4 years old this build box would be her favorite. We may have started out younger then recommended, 7 years old, but it’s not only showed her how fun things are created but also helped her hand eye coordination with building. The first few boxes I had to help a very little, now we are almost a year into building them and she does them completely on her own!