SimCity 2000 always had a special place in my childhood, in large part because I would spend hours playing it every weekend to avoid having awkward living room time with my stepfamily. (We went through a SimTower phase that I think was brutal on everyone.) And some odd things about the game have stuck with me.
Obviously there were elements like the strangely haunting soundtrack, or the alien death robot — which I never actually used that much, because really all it did was start fires. But it probably says something that what I really appreciate is how the game tapped into my budding interest in politics and government.