Unlicensed clones, dubbed Famiclones, are sold due to the lack of original hardware remaining. The first Famiclones were illegal and sold while the NES was produced in markets where the NES was not introduced. They were introduced in North America by companies such as Yobo and Retro Duo and are considered legitimate, due to NES hardware patents expiring. They have mixed compatibility rates, but Yobo and Retro Duo units function well. | Unlicensed clones, dubbed Famiclones, are sold due to the lack of original hardware remaining. The first Famiclones were illegal and sold while the NES was produced in markets where the NES was not introduced. They were introduced in North America by companies such as Yobo and Retro Duo and are considered legitimate, due to NES hardware patents expiring. They have mixed compatibility rates, but Yobo and Retro Duo units function well. |