World of Warcraft Classic is a recreation of “retail” World of Warcraft before expansions started to significantly change its content. Its creation was in no small part due to high demand for a “vanilla WoW” experience, which had been catered to by popular private servers before World of Warcraft Classic was announced at BlizzCon 2017. The game was then released in 2019.
WoW Classic offers a faithful rendition of WoW as it was after patch 1.12.1 in September 2006. As such, gameplay mechanics from the original release have been replicated as closely as possible. As of 2021 Blizzard released Burning Crusade Classic, which offers an optional migration into WoW’s first expansion with all the features that it included at the time.