What is Video game?

A video game is a game that involves the interaction with a user interface to generate visual feedback on a video device. Video games may have a reward system—such as a score—that is based on accomplishment of tasks set within the game.
The “video” in “video game” traditionally refers to a raster display device. However, with the popular use of the term “video game”, it now implies any type of display device. The electronic systems used to play video games are known as platforms; examples of these are personal computers and video game consoles. These platforms are broad in range, from large computers such as mainframes, to handheld devices such as cell phones and PDAs.
The user interface to manipulate video games is generally called a game controller, which varies across platforms. For instance, a dedicated console controller might consist of only a button and a joystick, or feature a dozen buttons and one or more joysticks. Early computer based games historically relied on the availability of a keyboard for gameplay, or more commonly, required the user to purchase a separate joystick with at least one button to play. Many modern computer games allow the player to use a keyboard and mouse simultaneously.
Beyond the common element of visual feedback, video games have utilized other systems to provide interaction and information to the player. Chief examples of these are sound reproduction devices (speakers) and an array of haptic peripherals. One variant even utilized heat and mild electric shocks when the player failed to succeed.
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