Super Smash Bros.: Playable, 20 - 30 fps in game, minor glitches, audio off. Frame rate depends on how many animated objects are on screen.
Gex 64 - Enter The Gecko: Non - Playable, 60 - 70 fps during the intro logos, 25 fps in the menu, freezes after choosing new game.
And for shits and giggles...
Perfect Dark: Non - Playable? The fps keeps updating (around 1 - 2 fps) black screen. You can still go back to the menu. I'm not sure if you can actually get into the game somehow...