Don't buy if you have a small room,
This review is from: Your Shape with Camera (Wii) (Video Game)
Having tried Wii fit plus I wanted something a little more like hard work, so I bought Your Shape. At first I thought it was amzing, however, on repeated goes it was clear that it wasn't picking up what I was doing. The instructor kept shouting 'Legs!!' at me and 'watch your arms!' even when I was doing it. I thought that would be fine as at least I was working out properly.
However, the game notes your performance and adjusts the next one accordingly. So, when it thought I had had difficulty with my arms and legs, the workout never progressed, and unless you enjoy endless turn steps and jogging on the spot, this game lacks alot. Went back to Wii fit plus, which despite being deceptively low impact, has made my waist shrink a couple of inches.