The Vampire War (also known as Ninja Gaiden Sigma 2: The Vampire War, Ninja Gaiden Sigma 2 Prologue and Ninja Gaiden Sigma 2 #1 - The Vampire War) is a comic/motion-comic detailing the events directly before Ninja Gaiden Sigma 2.
A print version was available with certain limited versions of the game while all versions of the game came with a motion comic version that played while the game was installing and could later be accessed from the main menu.
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