Undead Warrior is a PSP title which features, what else, an Undead Knight on his warpath. Players will try to eliminate a royal king who wronged the Undead Knight. The main feature of Undead knight is to control hordes of zombies. you gain zombies by grabbing royal guards sent to kill you by the king. Grab a warrior, push a button, and turn the guard into a zombie under your control. You can hold over 10 zombies at a time and send them out to do your bidding for you.