Official U.S. PlayStation Magazine (often abbreviated to OPM) is a now-defunct monthly video game magazine, published by Ziff Davis Media. Issues 49, 51, 53, 55-112 include a PlayStation 2 demo DVD. The first issue was published on December 1997. After the issue 112 (January 2007) the magazine exited the market. The discs were developed by LifeLike Productions, Inc.