The PlayStation (officially abbreviated as PS and unofficially, but more commonly known as PS1 and PSX, not to be confused with the PlayStation X console) is a home video game console developed and marketed by Sony Computer Entertainment. The console was released in Japan on December 3, 1994, and was released in North America and Europe in September 1995. The PlayStation is the first of the PlayStation series of consoles and handheld game devices. As part of the fifth generation of gaming, it primarily competed with the Nintendo 64 and the Sega Saturn. In 2000, a re-designed "slim" version called the PSone was released, replacing the original grey console and named appropriately to avoid confusion with its successor, the PlayStation 2.