If you're not tired of puzzle games yet, here's another one to check out. Knox's Room is a challenging physics puzzle game, which the general goal involves causing a specific object to move, float or fall in a particular direction. It has been out for a while now, but it's worth mentioning because it is a free game that supports both Windows and Windows Phone. Want to see it in action? Watch our gameplay video on the Surface Pro 3 and the Lumia 930.