Happy Action Theater actually uses the Kinect to its fullest potential.
First and for most, Happy Action Theater is really not a “Game” in the common sense of the word, it is basically a collection of Kinect mini-games. The back story to Happy Action Theater development is when Double Fine was working on Once Upon A Monster, another Kinect game. Whenever they would have weird programming issues with the Kinect, Double Fine would start documenting these issues. Double Fine decided with these weird bugs and issues they could make some really cool games out of the other team’s misfortunes.