I'm actually shocked by the reviews. This work-out is like having a personnel trainer. I see a lot of complaints about the set-up, sensitivity of the game, in my experience it usually operator error. First off you have to have your kinect set-up right for it to work properly. If you experiencing errors you should probable check into where the kinect is located, do you have proper room etc. This is great work-out worth every penny, I felt the pain of it the next day and I didn't have to leave the house or drag the kiddeo's out. Most importantly you are being encouraged, corrected while working out and those are great ways to keep you coming back while making sure you are doing the exercises properly. It customizes it for you body type, weight, while giving you time for water breaks, and checking in to see if you may need to adjust to your speed etc. Helping you with healthy tips to change your life style and recipes to boot! Love this work-out is very nice and I have not had any problems with the sensitivity of the game. The set-up is fine it is just like anything else in life it takes time and nothing is perfect if you are looking for perfection you will be solely disappointed in life but this game is fantastic and you will see if done properly results. I had to add a review after reading the others because I didn't want someone to pass this by when it could possible be life changing.