When the SNES was a thing, I was working for a Japanese company, and was able to pick up Double Dragon for the SNES, in Osaka - along with the converter thingy, because Japanese cartridges were a different shape and socket, and Nintendo never officially released Double Dragon for the SNES in Europe.
You plugged the converter into the cartridge socket on top of the SNES, and the Japanese cartridge into the converter. Yes, much of it was in Japanese, but who cares, its Double Dragon, you know what you have to do!
You plugged the converter into the cartridge socket on top of the SNES, and the Japanese cartridge into the converter. Yes, much of it was in Japanese, but who cares, its Double Dragon, you know what you have to do!