Fantasy Westward Journey (simplified Chinese: 梦幻西游; traditional Chinese: 夢幻西遊; pinyin: Mèng Huàn Xī Yóu) is a massively multiplayer online role-playing game (MMORPG) developed and operated by the Chinese company NetEase. It was released for the Microsoft Windows platform in December 2001.[1] The game is the most popular online game in China as of May 2007 by peak concurrent users (PCU), with a peak count of 1.5 million.[2] Registered users reached 25 million by April 2005,[3] with 576,000 peak concurrent players on 198 game servers, which was considered the fastest-growing online game in China at the time.[3] Average concurrent users was reported in August 2006 to be around 400,000.[4]
The game uses the same engine as Westward Journey II, albeit with a distinctively different graphical style. Both games are inspired by the 16th-century Chinese novel Journey to the West. Together with Westward Journey II, it is one of the highest-grossing video games of all time, having earned an estimated $6.5 billion in lifetime revenue as of 2019 and having 400 million users as of 2015.[5]