A Europe-exclusive mobile adaptation was developed by Macrospace and published by Square Enix for Vodafone devices in August 2004. The music was written by Nobuyoshi Sano and Takayuki Aihara. The dark story was created by director Yoko Taro and Sawako Natori, who wrote the majority of the script. It was Shiba's first project as a producer.
Takamasa Shiba and Takuya Iwasaki conceived the game as a hybrid between the popular Dynasty Warriors series and Namco's aerial combat game Ace Combat. Wounded in battle while protecting his sister Furiae, he is forced to make a pact with a red dragon named Angelus as they journey together on a quest to prevent the Empire from destroying magical seals that keep the world in balance. The player controls Caim, a deposed prince of the Union, in his quest for vengeance against the Empire. The story is set during a religious war between two factions-the Union and the Empire-with the war tipping in favor of the Empire. The game is the first installment of the Drakengard series and features a mixture of ground-based hack-and-slash, aerial combat, and role-playing elements which have become a staple of the series.
Drakengard, known in Japan as Drag-On Dragoon, is a 2003 action role-playing video game developed by Cavia and published by Square Enix for the PlayStation 2.