I felt that I had to chip in after the last review, it's not that bad at all! Firstly, can't say I've noticed any software bugs. Secondly, it doesn't mark you as being correct if you stop moving, although it will pick you up a little bit if the move that you should be doing passes through where you are standing. I really like it, although nothing could ever replace the Edinburgh Zumbaboys! I have only done the warm ups so far, which are good. It looks like there are plenty of workouts on there, right up to expert level. This will definitely give you a proper workout. The only negative thing that I noticed is the menus etc aren't as slick as some other kinnect games. Also, remember that you need a kinnect unit to play this. There are also tutorials on there to teach you the Zumba basics. This will be great for burning off post Christmas calories plus the entertainment off watching the kids' efforts!