It is the only game that actually gets me down on my knees doing the, "no, no, no, noooo". The amount of emotional investment that can be placed into a shot is not beaten on many other machines. I don't think this will change a lot over time. Even though the game is usually described as not the deepest, I feel there are so many WAYS in which to get better at playing it. A deep ruleset is not necessarily (IMHO) 100% correlated with long term lastability in a collection (ha! but you would know all about that..35 machines, you would know better than me! I'm not worthy!) Tron simply has EVERYTHING that belongs in a pinball machine.