The term DREAMCAST GAME COMPANY is referring to the video game company SEGA. SEGA is a Japanese multinational video game developer and publisher headquartered in Tokyo, Japan. It is known for its arcade games, console games, and mobile games. SEGA was founded in 1940 and is one of the most successful video game companies in the world. The company is best known for its Dreamcast console, which was released in 1998 and was the first console to feature online gaming.