World of Warcraft comes in a variety of flavors these days. The most well-known, of course, is Retail World of Warcraft, which is the latest version of the video game that sees most of the updates. Besides that is World of Warcraft Classic, a series of rereleases of the game in its earlier forms. Right now, World of Warcraft Wrath of the Lich King Classic is the latest of the Classic releases. Before that was The Burning Crusade, which is no longer available, and before that it was simply Classic itself, which is still available to play.