Developed in response to a downturn in arcades in 1982, the SG-1000 was created on the advice of Hayao Nakayama, president of Sega Enterprises, Ltd. Shortly after the release, Sega Enterprises was sold to CSK Corporation, which was followed by the release of the SG-1000 II. The SC-3000 and the SG-1000 line both support a library of 76 ROM cartridge games and 29 Sega My Card games, all of which are fully compatible with the Mark III and the Japanese version of the Master System.