I believe previous nanos have had Sneak but this was the first time I've tried it and its great. I just equip Megas and I can basically run around without every monster chasing and shooting at me. Megas has become my favorite nano for an entirely different reason though: HE DOES NOT SPEAK. At last, a nano that just hovers quietly over your shoulder and doesn't blather the same lines over and OVER, doesn't make dumb jokes, and doesn't whine and complain when he's tired. Megas creaks a little when he's tired and that's IT. Bless you, little robot.