Ninja Gaiden Sigma Plus is a re-release of Ninja Gaiden Sigma for the PlayStation Vita. Unlike the previous remakes of Ninja Gaiden (Xbox), Ninja Gaiden Sigma Plus features an easy setting called "Hero" mode, making it more accessible to casual gamers. Because Sigma plus was released on the PSVita, the framerate was capped to 30 FPS, unlike the 60 FPS that the other versions had. Sigma Plus also takes advantage of the additional features that the Vita offers, including: Rachel can equip Glasses that affect her status in the following ways: