Kingdom Under Fire: Circle of Doom is a 2007 action role-playing game developed by Blueside and published by Microsoft Game Studios for the Xbox 360. It is the fourth installment in the Kingdom Under Fire series. Chronologically, the game's story follows Kingdom Under Fire: The Crusaders released in 2004. Unlike previous Kingdom Under Fire games, Circle of Doom lacks the elements of real-time strategy, with much of the gameplay focusing on the hack and slash combat.
