Ninja Gaiden

 is an hack and slash game developed by Team Ninja and published by Tecmo on March 2, 2004 in North America, on March 11, 2004 in Japan and on May 14, 2004 in Europe for the Microsoft Xbox.

It was later re-released as Ninja Gaiden Black, which included both DLCs but slightly alters the rest of the game, and later as a Playstation 3 remastered release as Ninja Gaiden Sigma. Two packs were released through Xbox Live, but the content is no longer available with the discontinuation of Xbox Live support for the original Xbox on April 14, 2010. Only the first pack can be used offline, meaning that the second one should not be covered by this wiki, but it is however included for completeness.