Knights in the Nightmare is a strategy-shooter role-playing game hybrid from Sting Entertainment, and the fourth episode in the Dept. Heaven series of video games. It was released by Atlus in North America. Sting released a special edition version of Knights in the Nightmare, called the Knights in the Nightmare DHE Series Special Pack , and it includes a copy of Yggdra Union: We'll Never Fight Alone for the Game Boy Advance.
