Ninja Gaiden Sigma Plus (PS Vita) (UK) (UK Account required for online content) Unsheathe Ryu's blade and take on battle hardened enemies using the intuitive controls of PlayStation Vita Slice your way through an epic campaign that features a brand new difficulty level exclusive to PlayStation Vita called Hero Use your combat skills and ninja prowess to unlock multiple costumes for Ryu Aim your bow by moving the PlayStation Vita Strengthen your Ninpo with the rear touch screen - new controls for violent ninja action