Exergame design

I would have a game called Work This Out! It would come from DDR, Eye Toy Play 2, and Wii Fit. It would teach you how to dance(DDR) and you would have a bunch of different choices of different types and styles of dancing(Eye Toy Play 2). It would help you exercise because of all the dancing you do and you would have to buy a kind of mat that you would dance on and that would tell you how many calories you've burned(Wii Fit). People my age would find it interesting because it teaches you how to dance actual dance like tango and stuff and not a lot of people know how to do that.