For a long, long time there have been countless resources on the ‘net and urban gaming legends about Famicom to NES converters being inside early release NES cartridges … I’m going to clarify the truth behind this popular subject of retrogaming along with a walkthrough on turning one of these special cartridges into something useful. This isn’t a feature on how to mod one of these cartridges since to do a nice looking job you need a few tools and it’s always a little different, so you have to figure that out on your own. However you will find a walkthrough on how I built the one particular Famicom to NES converter pictured below.

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