By Spencer . November 30, 2011 . 2:00pm
The "plus" in Ninja Gaiden Sigma Plus is for a new mission mode called The Way of the Ninja. Missions will have more varied gameplay and it sounds like one of the levels is all about projectiles.
Another addition is hero mode, which is designed for newcomers to play so they can enjoy the game’s story. Ryu automatically guard against attacks in this mode. Team Ninja also made use of Vita’s rear touch panel which you can use to power up ninpo. Players can also aim by tilting the system.
Ninja Gaiden Sigma Plus is slated for release on February 23 in Japan.