Ninja Gaiden Sigma puts realistic battle and acrobatic ninja moves at your fingertips. As Ryu Hayabusa, you are seek revenge after your clan is massacred by the Vigor Empire. All you have are your wits, sword and skills. Your weapons & combat skills are great, but only time will tell if they're enough to beat the Holy Emperor and reclaim the magic sword named Ryuken. Upload your Karma scores on the Playstation network & compare leader boards