This is a cool mod out of France; an entire Famicon console housed in a NES game cartridge. It has two controller ports, video out, and even a reset switch. Unfortunately, the mod does require the destruction of a cartridge, but I certainly have a few old video game cartridges which no longer work or are incredibly boring games. It seems mods like where consoles are placed in a different console (example one) but this is the first time I have seen a cartridge used as a housing.

– Terrence Scoville