I'm a chatterbox participant and me and my son Had a chance to try the code and go mouse set for free last night. All I can say is he absolutely loved it! The excitement he got after the mouse executed his commands/codes was just great. He's four and seemed to be able to grasp the instructions fairly easily. My other son is turning 3 this month and I'm thinking he will be getting his own too since his enthusiasm towards his big brothers mouse is off the scales! I definetly recommend this game if your looking for something to not only entertain your child but also allow him/her to use their brain and imagination.