I have my dad's old n64, and a bunch of games for it. I have some of the manuals, and that's very helpful, but I'm missing a lot of them as well. Is there a site where I can find and download free official PDF files for old n64 games?
Here you have the link to the manual for the console itself:
And here you can download some game manuals:
I can't seem to find US manuals for the games but hopefully, those work for you