I recently bought this game after all my friends started joining the gym & I couldn't afford it! =[ It was firstly cheap, which was a great start & when I actually started doing the exercises on it, it's been working great! The day after I first used it, my legs hurt SO bad!
I've only had it 4 days so obviously, it hasn't had a visible effect yet - but I'm sure it will if I continue to use it once a day!
Firstly, you have to choose what you want your workout to do (mine was to look good, & get a bikini body) & it uses these choices to get workouts specifically for you & what you want. You get to choose your own fitness coach out of 4 people & there is lots of nutritional advice on there too if you're also on a diet.
There are challenges too which test to see if you're good enough to do things like be a dancer, football player, boxer etc which are good fun & a great workout. Usually I tend to do my daily workout, & then one of these challenges. Afterwards, I feel completely worked out so I would totally recommend this game!
Also, a good idea to look at a game called "My fitness coach". That was very helpful too! =]