Code & Go Robot Mouse Activity Set is a very creative and fun toy. My 6yr old son loved it. He understood the game and got the hang of coding the mouse very quickly. He loves the different combinations he can use it with and also keeps him occupied for long time. He was able to assemble the base easily. He understood the activity cards and was able to put the walls in place accordingly. Sometimes he makes his own paths and code the mouse different ways to keep it interesting. I received this product for free in return for honest review.