The PlayStation[a] (officially abbreviated as PS and commonly known as the PS1 or its codename PSX) is a home video game console developed and marketed by Sony Computer Entertainment. It was first released on 3 December 1994 in Japan, on 9 September 1995 in North America, on 29 September 1995 in Europe, and on 15 November 1995 in Australia, and was the first of the PlayStation lineup of video game consoles. As a fifth generation console, the PlayStation primarily competed with the Nintendo 64 and the Sega Saturn. Ironically, the makers of both consoles, Nintendo and Sega, had many of their games released on the platform.
The PlayStation was the first "computer entertainment platform" to ship over 100 million units, which it had reached nine years after its initial launch. In July 2000, a redesigned, slim version called the PS one was released, replacing the original grey console and named appropriately to avoid confusion with its successor, the PlayStation 2.
The PlayStation 2, which is backwards compatible with the PlayStation's DualShock controller and games, was announced in 1999 and launched in 2000. The last PS one units were sold in late 2006 to early 2007 shortly after it was officially discontinued, for a total of 102 million units shipped since its launch eleven years earlier. Games for the PlayStation continued to sell until Sony ceased production of both the PlayStation and PlayStation games on 23 March 2006 – over eleven years after it had been released, and less than a year before the debut of the PlayStation 3. Despite this, homebrew developers are still creating 3D games for the console from scratch.
On 19 September 2018, Sony unveiled the PlayStation Classic to mark the 24th anniversary of the original console. The new console is a miniature recreation of the original PlayStation, preloaded with 20 titles released on the original console, and was released on 3 December 2018, the exact date the console was released in Japan in 1994.