hihi, I'm pretty sure that *majority* of all those old classic games from Snes / Genesis / Amiga will be up on GBA. (one day)
have you seen all those previews about upcoming retro ?
- all Bitmap brothers title
- most of Konami's shoot (gradius...)
- some of Delphine software (FlashBack 2)
- hope for cinemaware soon
- and much more !