A video game is an electronic game that involves interaction with a user interface to generate visual feedback on a two- or three-dimensional video displaydevice such as a touchscreen, virtual reality headset or monitor/TV set. Since the 1980s, video games have become an increasingly important part of the entertainmentindustry, and whether they are also a form of art is a matter of dispute.
The electronic systems used to play video games are called platforms. Video games are developed and released for one or several platforms and may not be available on others. Specialized platforms such as arcade games, which present the game in a large, typically coin-operated chassis, were common in the 1980s in video arcades, but declined in popularity as other, more affordable platforms became available. These include dedicated devices such as video game consoles, as well as general-purpose computers like a laptop, desktop or handheld computing devices.
The input device used for games, the game controller, varies across platforms. Common controllers include gamepads, joysticks, mouse devices, keyboards, the touchscreens of mobile devices, or even a person's body, using a Kinect sensor. Players view the game on a displaydevice such as a television or computer monitor or sometimes on virtual reality head-mounted displaygoggles. There are often game sound effects, music and voice actor lines which come from loudspeakers or headphones.