When first looking at this game, it's hard to think that you are a deadly ninja trying to master the deadliest of ninja skills. But, that's what you are trying to do as you kill off your enemies. The actually violence of the game is more comical than disturbing. Additionally, this game really grows on you, as I have played it every day since I downloaded it. It's basically a simple gameplay but it is challenging. You must get past the obstacles and destroy those evil forces. For free, this app is a must have. I guarantee it will grow in popularity with you and others.