 The games received multiple adaptations and additional story content in the form of novelizations, manga and supplementary material. The first game received two novelizations: Drag-On Dragoon: Side Story on November 28, 2003, and Drag-On Dragoon: Magnitude "Negative" on January 23, 2004. The first book was written by Emi Nagashima, writing under her penname of Jun Eishima, and the second by Takashi Aizawa. The novelization of Drakengard 2, written again by Nagashima, was released on September 30, 2005.
