As of May 26, Tecmo Koei had still not reached an agreement with Effissimo, prompting the investment fund to seek mediation with the Tokyo District Court.

Koei stock was to be exchanged for Tecmo Koei stock at a rate of 1:1, and Tecmo stock exchanged at .9:1, giving Koei shareholders, in total, a three-quarter stake in the new company.

Though the combined profits in 2007 were 8.5 billion yen, they anticipated that the merged company would net over 16 billion yen in the fiscal year ending March 2012.

Harukanaru Toki no Naka de is a newer Neoromance hit, with many sequels and an anime television series based on it.

The newest game in the series, Kin'iro no Corda, is gaining popularity partially because the manga series it was based on has been recently licensed by Viz for English language publishing, and an anime television series based on it began airing in October 2006.

Yoichi Erikawa, co-founder of Koei, took over the four positions vacated by Matsubara. Omega Force are most well known for its Dynasty Warriors series, including spin-offs such as Samurai Warriors, Warriors Orochi, amongst others.

As well as non-Warriors titles such as Dragon Quest Heroes, Win Back, Attack on Titan and Toukiden.

Great Navigation Era), set in Portugal during the Age of Exploration.

In 1988, Koei established a North American subsidiary, Koei Corporation, in California.

A month later, on April 1981, Tehkan released in Japan its first arcade video game titled Pleiads (which was distributed in America by Centuri).