Superfighter is a 10 year old "cult" fighting game that is/will be available on almost all formats. For more info check out http://www.superfighter.com/. On the site there's also a downloadable (DOS/Windows) version and a online version of the game.
I emailed the devoloper a few weeks back to ask about their progress.....but they said the GP32 port was on hold for now That was a few weeks back though