Flash cartridge for SNES lets you get your ROM on

You're familiar with the flash carts that Nintendo is waging a questionably successful war on, yes? Basically they just read from a ROM file and tell the console or handheld what it would hear if that game were actually in the slot. They work quite well and pirating games is unbelievably easy, so you can see why Nintendo would be worried. For the SNES, though, I doubt there will be quite as big of a response.

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