Summary: I carefully read the reviews of other customers to make sure I didn't need a Wii balance board and though you don't to use the product, you DO if you want to do any of the other excercises that aren't kick boxing. I did not like the product at all and quickly turned it into my local game shop for credit.
Summary: Have been using Cardio Gym for about 2 weeks now. I don't know what the median age for most of these reviews is, but at 44 and in good physical condition the game is pretty hard on the joints. I've breezed through the Wii Fit and wanted something more challenging to add on. After 2 sessions of trying to bounce and rock with the footwork as they directed my knees were in severe distress. I've modified by just rocking and hasn't been too bad.
Summary: I was expecting more than just boxing on a product that is named Cardio Workout. There are too many breaks between the exercises and it is very hard to sinc with the jump rope. So if you're not looking for anything but boxing then buy this . If not look elsewhere.