The underground scene of game-created music is really thriving, with the latest example to emerge from under the radar being a drum machine hack for a GameBoy. A bright yellow GameBoy, 1MB of flash memory, a serial interface, and a custom ROM is all that's needed to put out some beats: with a little help from some solenoids and flat surfaces, of course. Putting it all together is the hard part, and half the fun we suspect.