Holy shit you are fast. I'm going to have to go with Perfect Dark. 2nd is TWINE then 3rd is Turok: Dinosaur Hunter.
I had three that I played around the same amount of time -- Goldeneye, Turok, and Quake 64.
Goldeneye
Maynard - The WCS Guy
how the hell can it be anything other than goldeneye? lol
edit: turok was amazing 2. another great n64 game (not really fps) was vigilante 8. so fucking fun
how it turok not a fps? it's in first person mode... and you shoot guns lol... that's kinda the definition of a FPS
Maynard - The WCS Guy
Voted Turok, for turok 2, that game was hard as hell and bad ass.
Perfect Dark, by far.
The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.