Koei Tecmo Holdings Co., Ltd. is a Japanese video game, amusement and anime holding company created in 2009 by the merger of Koei and Tecmo. Koei Tecmo Holdings owns several companies, the biggest one of those being its flagship video game developer and publisher Koei Tecmo Games that was founded in 1978 as Koei.The company is best known for their Nobunaga's Ambition, Dynasty Warriors, Atelier, Ninja Gaiden, Dead or Alive, Monster Rancher, Fatal Frame, and Nioh franchises. They are also known for their work on external video game franchises, namely on Square Enix's Final Fantasy and Nintendo's Fire Emblem. Koei Europe was the first subsidiary to change its name to Tecmo Koei Europe, Ltd and to release video games under the new moniker. In January 2010, Tecmo, Inc. and Koei Corporation followed suit by merging to form Tecmo Koei America Corporation. On April 1, 2010, Tecmo was declared disbanded in Japan. Its sister company Koei survived but was renamed Tecmo Koei Games (today Koei Tecmo Games) and is the main video game subsidiary of the group. The former development divisions of Tecmo and Koei were briefly spun-off as separate companies in March 2010, but folded into Tecmo Koei Games in April 2011. In addition to its primary trademark, Koei Tecmo Games occasionally used the "Koei" and "Tecmo" brand names on new video games until 2016 for marketing purposes. Source: Wikipedia (en)