Early personal computer based games historically relied on the availability of a keyboard

A video game, like most other forms of media, may be categorized into genres based on many factors such as method of game play, types of goals, and more. Because genres are dependent on content for definition, genres have changed and evolved as newer styles of video games are created. As the product

Specialized video games such as arcade games, while previously common, have gradually declined in use. The user interface normally used to manipulate video games is 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.