The term 'ONETIME NINTENDO RIVAL' refers to the video game company Sega, which was once a major competitor of Nintendo. Sega was founded in Japan in 1960 and released its first console, the SG-1000, in 1983. It went on to become one of the most successful video game companies of the 1980s and 1990s, with popular consoles such as the Sega Genesis and the Dreamcast. Although Sega is no longer a major player in the video game industry, it still produces games and hardware for various platforms.