So when you are creating your game at some point you want to add controls and then you select a type of input such as keyboard, mouse, or touch. If one of these were to be the Kinect sensor or others in the future, we can start to think about game and web-application creation using motion sensing and all the other features on board the Kinect. Last summer we integrated the Kinect with the Unity3D game engine but what we didn't have was the ability to send to data to the browser and with Unity3D it needs plugins. I'd like to keep everything web-based with no plugins and Scirra came at just the right time :) .
One of the first applications that i'm working on involves assisting children with Autism and special needs to communicate and interact with immersive game environments using the Kinect for motion and speech detection.