Of my 18 machines up and running, my two nephews (7 and 12) go straight to Iron Man every time, and get how to play it intuitively. They like GB because it's flashy, but get lost in it. They are too addled by video games to play EMs, too slow. They enjoy the novelty of the contraption aspects, but only for a short time. I thought Gilligan would be good for them since the rules were easy to explain, but they just kind of gave me a blank look in response to hearing the word "rules"...