I had a N64 also - most games are dated nowadays of course.
My favourites were Mario 64, Killer Instinct Gold, Sin & Punishment, Yuke Yuke Troublemakers, Yoshis Story, Wave Race 64, Banjo Kazooie, 1080, Goldeneye & the reason imo to own the system alone - the best version of Bangai - Oh.
Seriously I'm on the fence for years on the system just for that one game (and yes I know about the Dreamcast version but it doesn't even come close
)