"Set six months after the events of the original Xbox version of Ninja Gaiden, Ryu Hayabusa has rebuilt Hayabusa Village. Momiji, a resident of Hayabusa, is abducted by the Black Spider Ninja Clan. During his quest to find her, Ryu uncovers the mysteries of the Dark Dragonstones and the secret behind the Dragon Sword.
Unlike most DS titles, you will be playing Dragon Sword in 'book form', turning it 90 degrees so that you get two tall screens next to each other, rather than two wide ones. It may take a little getting used to, but the more 'vertical' gameplay is a nice change from the norm. You can easily navigate each area using the map that is shown on the left screen, with the action taking place on the right screen."