A game replay, also known as a demo, is a form of user-generated content. In most instances, a game replay is a recording of a battle between opponents in a video game which can then be viewed by other players. It is most common in real-time strategy games like StarCraft, Command & Conquer, World in Conflict, Company of Heroes, and Age of Empires, as well as some first-person shooter games such as Counter-Strike (via console command). Recently, game replays are being used on non-computer platforms and games, such as Halo Wars.