my guess would be
Everything the gp32 can do, better. (nes,gb,snes,genesis, ect.)
+sega cd
Neo Geo (in some capacity or another)
Turbo Duo
Age of the beast
(one of these might happen, be amazed)
Playstation
n64
Sega 32x
that's my guess. Some mighty talented people code for the gp32, and it...