Sega Corporation. Japanese multinational video game and entertainment company located in Tokyo, Japan, with subsidiaries in America, Europe and Asia. Founded by David Rosen in 1951 and started as Rosen Enterprises, but in 1965 the name was changed to Service Games thanks to some merges with American Company's. In 1983 the company name officially changed to Sega Enterprises when a group of Japanese investors bought the Japanese part of the company. In 2000, name was changed again to Sega Corporation, in 2015 to Sega Games Co., Ltd. and in 2020 to Sega Corporation once again.