D3 Publisher is a Japanese video game developer and publisher known for creating and distributing a variety of games across multiple platforms. Founded in 1992, the company has produced titles in genres such as action, adventure, and role-playing games. They are recognized for their unique and often quirky game designs. Over the years, D3 Publisher has collaborated with various developers and has released popular series like Earth Defense Force and Oneechanbara. The company aims to provide entertaining experiences for gamers while exploring innovative gameplay mechanics and storytelling techniques.