My programmer husband was very excited to show our 5 year old son how to use the Code & Go mouse set, and it didn't disappoint. Our son loves the fun movements and sounds that Colby uses, and he pumped his fist in the air every time he got the correct sequence to help Colby find the cheese. The possibilities are endless for making new and challenging mazes, and everything seems to be of good quality. My only complaint is that sometimes our Colby mouse didn't go completely straight, which put him off course, even with the correct coding sequence. Overall, though, a great resource to teach young kids basic coding concepts in a fun way! I received this product for free in exchange for my honest review.