Bought this for my 6yo grandson. Though it said 8 and up I wanted something challenging for him. Everyday after school and his homework was done he would snap pieces together. Things he didn't understand he asked his mom or dad. They got into it also and loved building it together. On the fourth day he send me a video of it complete and playing with it. He wants another one for his brother, who's 10, so they can race each other and see who can do it better. Will looks for something for Christmas and it beats watching tv....