Not really, people write WP7 apps specifically and often they don't bother because of the low install base. MS often has to partner with them to allow low level access or pay them to rewrite their app. which platform is missing from these lists? Why do you think that is? http://www.unrealengine.com/platforms http://en.wikipedia.org/wiki/Adobe_Integrated_Runtime http://en.wikipedia.org/wiki/Unity_(game_engine)