The game is a spin-off of the Sacred role-playing game series, taking it in a new direction as a side-scrolling brawler.
Players will be able to choose from three character classes, the Safiri Warrior, the Ancarian Ranger and the Khukuri Shaman. They can then complete the game solo or team up with friends for three-player co-operative play.
The last game in the series was 2008's Sacred 2: Fallen Angel. The story of Sacred Citadel will act as a prologue for the upcoming Sacred 3, which Deep Silver has said will be fully revealed soon.
The game is being developed by Southend Interactive, who developed 2010's Ilomilo for Xbox Live Arcade.
Sacred Citadel will be available for Xbox Live Arcade, PlayStation Network and PC in 2013.
Watch the debut trailer for Sacred Citadel below: