got this for my boyfriend for his 23rd birthday! He loved it. He and his friend started to work diligently on it and for the next two weeks I was completely ignored; not that I minded just showed how much he loved it! The tiny little pieces that needed to be taken out and the way you had to sort would confuse me but he seemed to understand and was able to use the directions to get it done. Its a sure buy for an adult not for kids!