Nakayama got permission to move into the home console industry. This led to the release of Sega's first home video game system, the SG-1000, in July 1983. It had sold 160,000 units in Japan. Sega did not expect it to sell that well. However, sales at stores were dominated by Nintendo's Famicom which had been released the same day. Sega believed that the Famicom sold about 10 times better than the SG-1000. The SG-1000 was replaced by the Sega Mark III within two years. Gulf & Western started getting of its non-core businesses after the death of company creator Charles Bluhdorn. Nakayama and former Sega CEO David Rosen decided to do a management buyout of the Japanese subsidiary in 1984. They would do this with financial support from CSK Corporation, a famous Japanese software company. Nakayama then became CEO of Sega Enterprises, Ltd.