Re: Any way to download the entire catalog of game
Go to https://archive.org/details/nointro.nes and under "DOWNLOAD OPTIONS" click on the text that says "3247 files" and that should download them all as 1 zip file.
I found the Sega Genesis, SNES and N64 collections (Sets that don't contain duplicates or a lot of garbage).
Also found this one for NES---> https://archive.org/download/nointro.nes
But have no idea how to download it automatically.