Tristar 64

The Tristar 64 was an accessory built for the Nintendo 64 that was developed in Hong Kong. With the Tristar 64, people could play their Nintendo Entertainment system and Super Nintendo Entertainment System video games on the Nintendo 64. Players have complained that the graphics quality severely deteriorates when using the accessory. This, coupled with the fact that game cartridges with a coprocessor wouldn't work on it, made the Tristar 64 unpopular.