Sega Corporation is a multinational video game software and hardware development company, and a home computer and console manufacturer headquartered in Ōta, Tokyo, Japan. The company had success with both arcades and home consoles, but on January 31, 2001, officially left the consumer console business and began concentrating on software development for multiple third-party platforms.

Sega's main offices, as well as the main offices of its domestic division, Sega Corporation (Japan), are located in Ōta, Tokyo, Japan. Sega's European division, Sega Europe Ltd., is headquartered in the Brentford area of London. Sega's North American division, Sega of America Inc., is headquartered in San Francisco, California; having moved there from Redwood City, California in 1999. Sega Australia's headquarters are located in Sydney, New South Wales.[citation needed] The company also has offices in France, Germany and Italy.

On November 1st, 2000, Sega changed it's company name from Sega Enterprises, Ltd to Sega Corporation

but in the anime SEGA  will be the name of the universe where sonic and all other sega characters will be at