With our goal of developing novel and cool 3D interface, Andy Wood and I, advised by Doug Bowman, made a waterbending trainer app, where you control water using continuous, martial arts-like movements. Inspired by Avatar: The Last Airbender, we wanted players to fully control the water, not just -do a static pose- and some fixed burst of water shoots out. You can control anything from the intensity, speed, and angle of moving water, depending on how you do the martial arts-like gestures, using a 3DTV, a Microsoft Kinect, and Unreal Development Kit.