Una idea para desarrollar que encontré en Touchmods.net:

game_controller_mini

In theory it should work, because there are ipod remotes that do fully work on the touch, and a game pad is technically a remote, just in a more comfortable game friendly layout. I believe this would be a hit, especially if zodttd integrated it to work with his emulators. Developing something like this would be groundbreaking and would promote more gaming on the touch/phone. For instance Doom, quake, and other games could be modded to work with it thus making a more gamer friendly environment.