5 Nintendo sub-console add-ons that reshaped the original game systems

Everyone knows what a classic NES looks like, down to its iconic controller, but not all Nintendo consoles were stand-alone. Some of the most interesting parts of Nintendo’s hardware history were the things that came later—add-ons and expansions that made those systems do more than they were originally built for. While the expansion port on the bottom of the NES is infamous for never being used, other systems like the Japanese Famicom and Super Famicom did have extension add-ons.