I absolutley wore out the D Pads on my NES controllers playing Marble Madness as a kid. Such a simple concept, but so challenging, such a fun multiplayer game, and probably one of the best music scores an arcade game has ever seen. Another Atari classic, I had been searching for a Marble Madness (or any System I cab) for a while. One thing lead to another and I finally was able to add this title to the Garcade. The arcade version is very cool in that you control the marbles with trackballs which makes it all the more fun, and all the more challenging. Marble Madness is AWESOME.