Humble Bundle with Android 6, which came with seven games was already a good deal, but now that three additional games have been added, it makes the package even more attractive. The new games, McPixel, Walking Mars, and NightSky HD, bring the total to ten games.
It seems like anytime a PC game has GPU-driven physics it's always the proprietary Nvidia tech. Is that mostly because of the hardware landscape on PC? ie. all the possible different configurations. It would be too time consuming to code in GPU physics that can run on AMD's spu's, and then create ones that can run on PHYSX as well.