Established in 1999, GameStop Corp. is one of the largest video game and entertainment software retailers worldwide. Based in Fountain Valley, Calif., the company operates more than 6,500 retail stores across the world as well as via its e-commerce site. It offers software, hardware, gaming platforms and game accessories, such as Xbox 360, Sony PSP and Playstation. Game Informer magazine, a multiplatform video game publication, is a part of the GameStop. The retail chain is ranked 255 on the Fortune 500 annual listing of public companies.