It basically makes your computer think that it is the game console, its kind of like a software version of the whole game console, you load the "cartridge" by opening the file for the particular game, in this case shadows of the empire. I have a copy of the emulated game and the emulator itself for N64. You can find emulators and roms (the game itself) for all older game systems on the web. I could probably send you a copy of the emulated version if you want to try it out.