Koei Tecmo Holdings Co., Ltd. (simply known as Koei Tecmo) 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 game developer and publisher Koei Tecmo Games which was founded in 1978 as Koei. On April 1, 2010, Tecmo was declared disbanded in Japan. The sister company Koei survived and was renamed Tecmo Koei Games (today Koei Tecmo Games) and is now the main publishing arm of the group in Japan. 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 2016 the "Tecmo" and "Koei" brand names on new video games for marketing purposes.