I've currently installed the following pc games on my cab:
Commander Keen 1-6 + Keen Dreams
Duke Nukem II
Duke Nukem Manhattan Project
Street Fighter 4
With plans to install:
GTA2
TerrorDrome
Doom 1,2, Final
Descent? -Has anyone tried playing the descent's on cabinet? They were designed around joystick play, probably fairly adaptable to arcade cabinet.
Forsaken - Descent-type game with newer graphics. not sure how cab friendly, will get back.
Eventually, SNES and GBA emulators
I've been looking for Metroid SR388, but I haven't been able to find it, is it complete?
I found the AM2Remake, and its looking very promising, as it nears completion.