Tenchu 2: Birth of the Stealth Assassins (2000)

Tenchu 2 is a prequel to Tenchu, telling a tale of events prior to those of the previous game. Once again, you can play as Ayame or Rikimaru, two faithful and honorable ninja whose lord is a gentle man in an age of warfare. With your training nearly complete, you find yourself caught up in aiding your lord against a civil war in his own domain. All is not what it seems, however, and you'll soon realize that your greatest threat has been forged much like you. Much like its predecessor, Tenchu 2 is a 3D third person stealth action game. You are not only rewarded for stealth, but also for efficiency of movement this time. This extra feature increases the difficulty of achieving the better items, as you not only have to be quiet, but be direct and near perfect in your steps.