Changyou.com is a prominent Chinese online game developer and operator that was initially formed as a business unit under Sohu.com in 2003 before being listed separately on the NASDAQ Global Select Market in 2009. The company has become increasingly successful with the development of one of the most popular MMORPGs in China and their two popular web games. Additionally, Changyou owns and operates the 17173.com Website, which is a significant game information portal in China. The company has enjoyed significant growth in user data and revenues across its range of games, making it a key player in the Chinese gaming industry.