Koei Tecmo is a Japanese video game developer and publisher known for creating popular game franchises. Founded in 1978, the company emerged from the merger of Koei and Tecmo in 2009. It is recognized for its action, role-playing, and strategy games, including the Dynasty Warriors series and the Nioh series. The company has a strong presence in the gaming industry, producing titles for various platforms, including consoles and PC. Koei Tecmo is also known for its collaborations with other developers and for adapting historical events into engaging gameplay experiences.