Just saw this movie and it is everything the title says it is.I read a bunch of reviews describing it a a bad film because of the story line not having much depth.I figure these people do not know much about ninjas or maybe I don't.Ninjas are killing machines hidden in darkness. They have no time for philosophy like the samauri.I took my son and my brother to see this movie and all three of us felt the violence in one scene imparticular.quote"I'd rather get curbstomped than have that done"said my boy.You'll understand what scene it is when you see the movie.If your not into ninja violence then you will not like this movie.If you do like ninjas then this is the greatest ninja movie of all time.