Meh. I feel castlevania 3 was hard. Just because of that final stage has no check point next to Dracula. Unless you mean the newer ninja gaidens. Then I haven't played those. Closest thing I've played to the new ninja gaidens is bayonetta and bayonetta 2. 2 hardest mode disables witch time. Getting too use to having it messes you up when you play the hardest difficulty.