A computer game is a video game played on a personal computer. PC games are created by one or more game. They may then be distributed on physical media such as DVDs and CDs, as Internet-downloadable shareware, or through online delivery services such as Direct2Drive and Steam. PC games often require specialized hardware in the user's computer in order to play, such as a specific generation of graphics processing unit or an Internet connection for online play, although these system requirements vary from game to game.Computer games and game addiction are often the subject of criticism, focusing largely on the influence of objectionable content and prolonged game play on minors. The Entertainment Software Association and other groups maintain that parents are responsible for moderating their children's behavior.