Looking good. Maybe you can do the vibration using Qt Mobility 1.1's Feedback API? The rectangles in-game with the grey/white border are used to control the robot, right? Have you thought about an on-screen analog stick that appears when the user touches the screen or (alternatively) cursor keys in the lower right corner of the screen? For an analog stick example, check this out: http://www.youtube.com/watch?v=LGvAPD7XBV4#t=41s

thp