While it can be extremely frustrating at times, Ninja Gaiden Sigma for the PS3 is a remarkable achievement.
The first thing you probably notice when you start Ninja Gaiden Sigma for the first time, is the extremely high difficulty level. Every enemy in the game will try to kill you, and not in a way like in God of War II (where the enemy's are just waiting for their turn to get killed). But for those who can overlook the almost niche-like difficulty of the game, will find that Ninja Gaiden Sigma is a pleasure to play and to look at.
But the biggest problem about NGS is that it's not as revolutionary as the original Ninja Gaiden was. But for those who've never played Ninja Gaiden or Ninja Gaiden Black, this is a decent action adventure with enough content to keep you fighting for a pretty long time.