The RetroGen adapter.
The RetroGen adapter is an unofficial adapter that lets you play Sega Genesis/Mega Drive games on your SNES. In reality its a Sega Genesis on a chip, only using the power and controller of the SNES, it uses it's own port and comes with AV cables to plug into your television.
Overview 
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The RetroGen was made by RetroBit, it's purpose is that it allows you to play Sega Genesis games on your Super Nintendo Entertainment System. The cartridge adapter is region free.
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