I just picked up a N64 at a yard sale today and it came with something called Mr Backup z64 I did a little research but not to sure what to make of it. I wanted to get a 64 for my son cause he loves all the Mario games but this system didn't come with any games so I was thinking of putting the expansion z64 thing up on ebay so I could hopefully get a few bucks and pick up some games.
So my question is what exactly does this do? Just copy games? Is it worth the effort of selling?
Anyway the thing looks exactly like the thing in this image.
It powers up says some crap about powering off the 64 system but It doesn't do much else.