Which version of the pi are you using? I’d be more curious to know a list of roms that work on the RPi 2 and not the 1. There is already a list (somewhere) of N64 roms and how well they work on Mugen (cannot recall offhand whether it is Pi specific although I think it might be).

I haven’t had chance to properly check but Diddy Kong Racing on the pi 2 at least boots up to the character screen. I didn’t go further than that as I didn’t have time.

EDIT:

Found it; following are for pi 1.

See http://www.raspberrypi.org/forums/viewtopic.php?t=58395

And https://code.google.com/p/mupen64plus/wiki/GameCompatibility