Patchy is the word you're looking for to describe Harry Potter for Kinect. While graphics and controls are rock-solid, story and mini game quality can't quite fulfill expectations.
Overall I found that the game has some Kinect related issues that can take away from the fun, but many fans will forgive the shortcomings these present, whereas casual fans will not. With this in mind, the game is really for those who love everything about Harry Potter and the final score reflects that.
Kinect-powered arcade is intended to entertain you only in the case that you are six years old and/or you have a naked Hermione poster in your room. [Dec 2012]
There's so little variation in how any given activity is completed that even younger muggles will quickly bore of it. Not even Bellatrix Lestrange would be crazy enough to spend $50 on it.
Harry Potter for Kinect offers a nice immersion for our younger ones, when it's only their hands they need to use. But when the rest of the body is required as well, not so much. Some challenges are plain tedious, dull or unimaginative, and it clearly overshadows the better crafted missions.