The C64 busted open my horizons somewhere around age 11, when a relative bought me one because my parents couldn't/wouldn't. This relative "knew a guy" with a bunch of (what I soon learned were pirated/cracked) games he was able to give me. Impossible Mission was one of them. I don't remember if I finished it, but I damn sure had fun trying. It was one of those I was initially unimpressed by but came back to later. From what I've seen so far, they did a terrific job on this port.