Ninja Gaiden: Dragon Sword was released on Nintendo's popular Dual Screen platform early last year.  A large part of the DS audience missed out on this title, including me.  In Ninja Gaiden: Dragon Sword you take control of Ryu Hyabusa.  Momiji, a female ninja, has been kidnapped and it's up to Ryu Hyabusa to save her.  Ryu has to find all seven of the Dark Dragonstones in order to accomplish this task.  These Dark Dragonstones are very powerful and it seems that Ryu is the only one strong enough to control their energy.