I don't know much about what's inside an NES game other than opening it and cleaning it. I have a subwoofer about 2 1/2 ft from a few of my totes full of games. It wouldn't harm them would it? I just wanna be cautious. I have a bunch of money and love in those totes thanks.

No, speaker magnets can't damage NES cartridges. They can damage FDS disks, though.

They might damage reproductions or prototypes depending on the type of chips used.

Only if you turn it up to 11

You can't damage EPROMs, EEPROMs or Flash memory with magnets either. Magnets are only a threat to media that utilizes a magnetic charge to hold information, like floppies or hard disks.

Thanks guys. Put me at ease

EPROMs can only be damaged by UV radiation

And monster trucks