As Ryu Hayabusa you are out to seek revenge after your clan is massacred by the Vigor Empire. Realistic battle actions and acrobatic ninja moves are at your finger-tips. You play with only your wits, your ninja skills, and your deadly sword. Slice down opponents in the Vigor Empire as you attempt to beat the Holy Emperor and reclaim the magic sword "Ryuken". Bringing the classic to the PlayStation PlayStation Vita, Ninja Gaiden Sigma adds even more content over the Xbox Team Ninja title, with bonus weapons and a special "Hero Mode" added on.