Review on HISTOYE Building Engineering Projects Construction by Pao Novakovic

I have 4 boys, the eldest is 6 years old. He was very excited to get this toy and build it with his father. The instructions were a bit difficult to follow but they solved it and completed one of the machines. My 5 year old son wasn't that keen on following the directions and just building his own creation. The boys are excited to build something cool with their dad and dad loves it too. Would definitely only buy for a 6 year old if you intend to use it with an adult but otherwise a great toy.