N64 Roms

When i download them from romulation, it comes with
a lot of files. I know that they are in different languages
and some are hacks but which one is the original?

The with with the exclaimation marks on them, with an (E) or (U) neat it (unless you prefer the jap language :P )That's how I do it.

I use the GC one. What does that stand for?

I dont know what GC stands for but the files with [!] after the name are the unmodified files.

bscit · #3I use the GC one. What does that stand for?

game cube.I'm guessing your using one of the zelda games, some are the ready made files for the gamecube emulation (like how the zelda collector's edition works)It's the same, it just uses L trigger instead of R because of gamecube placement, just cosmetic.