The PS4 has been out for about 4 years now.
The original PlayStation 4 was released in November 2013.
Ps1 was released in Japan on December 3, 1994, and in North America on December 6, 1994.
PS3 was released in 2006.
The PlayStation 2 was released on November 17, 2000 in Japan, November 19, 2000 in North America, and November 22, 2000 in Europe.
The Wii came out on November 18, 2006 in North America and Europe.
The Playstation 1 was released on December 3, 1994 in Japan, and March 24, 1995 in North America.
The Xbox 360 was released in 2005.
No, Sony made PlayStation. However, Nintendo was an early supporter of the console and helped to promote it.
The GameCube was released in 2001.
Xbox was invented in 2001 by Microsoft.