Sangokushi Online (三國志Online) is Koei's third online Romance of the Three Kingdoms game developed for Microsoft Windows platform. Koei announced the development of its latest MMORPG in mid-2006. Koei planned on releasing Sangokushi Online in Japan in the first quarter of 2007 followed by the rest of Asia. However Koei started the first pre-open testing on September 27, 2007. A second pre-open testing was begun on February 7, 2008. Additionally, these plans do not reference a possible North American or European release. This follows Koei's tradition of Asia-only MMO releases, such as Nobunaga's Ambition. The game ended as servers shut down on 19 July 2010.