Dragon Oath, also known as Tian Long Ba Bu in China, is a free-to-play MMORPG developed and published by Changyou.com and Sohu and launched in May 2007. The game's story is based on the novel Demi-Gods and Semi-Devils by Louis Cha.

Dragon Oath, also known as Tian Long Ba Bu in China, is a free-to-play MMORPG developed and published by Changyou.com and Sohu and launched in May 2007. The game's story is based on the novel Demi-Gods and Semi-Devils by Louis Cha.