The GameEx forum is a real melting pot for all things even remotely related to GameEx. Some of the members have compiled a great list of other non-emulated games that work well with arcade controls, game pads and GameEx. You'll have to Google for some of the games.
What does GameEx do every 17 seconds?
GameEx 11.21 - NetPlay
New Demul v 56 (Mapfile?)
Help needed to make the LCD/LED plugh-in work with MameInterop
How to lit up LED buttons according to sudden critiria?
Please help with Daphne
Couple questions for newbie (Game Extender / key config)
How do t lit up LED according to sudden critirie/input?
Atari 400/800
Aspect Ratios and Screen Resolutions
Halo 2600
Gameex Standby System
GameEx startup behavior or key stuck
Wii new arcade games