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).
A number of websites allow users to upload replays of certain games so that other players can download and watch them, either for entertainment or improving their own skills.
Game replays are commonly used in the prevention and detection of cheating, especially when used in electronic sports.
A replay review can be loosely defined as a review of a game replay by an experienced player to determine what can be done to improve and expand upon the initial gamer's skill.
Replays recorded using third-party tools, such as FRAPS, are a form of user-generated content.