Metacritic is a commercial website that aggregates reviews of music albums, games, movies, TV shows, DVDs, and formerly, books. For each product, a numerical score from each review is obtained and the total is averaged. It was created and founded by Jason Dietz, Marc Doyle, and Julie Doyle Roberts. An excerpt of each review is provided along with a hyperlink to the source. Three color codes of Green, Yellow and Red summarize the critic's recommendation, giving an idea of the general appeal of the product among reviewers and, to a lesser extent, the public. It is regarded as the video game industry's foremost review aggregator.