If you have any NES controllers lying around and enjoy a little gaming, you might be interested in this new hack that has been created by Paul Rickards. Who has taken a standard NES controller and modified it to work on the iCade games on the iPad.
Rickards admits the hack happened as a accident, while playing around with iMAME on his iPad together with his homebrew Commodore 64 keyboard. Which is connected to his iPad via a modded USB connection, he accidentally struck a key. Which then prompted iMAME to say “enabling iCade mode”.=