Ninja Gaiden: Dragon Sword is a 2008 action-adventure video game released for the Nintendo DS, developed by Team Ninja and published by Tecmo (in Europe it was published by Ubisoft). A main installment in the Ninja Gaiden series, it features Ryu Hayabusa as the protagonist. The game is the first portable video game title in the series to be developed by Team Ninja and the first game developed by this company to be released for the Nintendo system. Dragon Sword is set between Ninja Gaiden and Ninja Gaiden II.

This title is presented in a third person, pseudo-3D manner, meaning all the game-models are rendered in full 3D, but the world the player travels around in is pre-rendered. When played, the Nintendo DS is held sideways, as in Hotel Dusk: Room 215 and Brain Age: Train Your Brain in Minutes a Day!. The left screen shows the area map, while the right displays the main gameplay, when set for right-handed play, and reverse when set for left-handed play.

Set six months after Ninja Gaiden, Ryu Hayabusa has rebuilt the Hayabusa Village. When fellow villager and kunoichi, Momiji, is kidnapped by the Black Spider Ninja Clan, he is forced to find her, while uncovering the secrets behind the mysterious Dark Dragonstones and their relation to the Dragon Lineage.

Near mint condition.