I remember that some of the earlier NES carts actually have the board of Famicon games, only there's a converter inside that makes it an NES cart. So...
To play Famicon cart games, I rip this off, flip it around, and use it as a converter? I can't remember honestly. I'd probably have to make a makeshift casing for it. Tips on how to do this?
PS. Are these the carts that don't have the grip notch on the cart? I have some flush older NES carts (like Mach Rider and quite a few Konami carts).