The thing with this is, you have to ask a certain age group. I mean, if I went up to any of my older siblings or parents, they would say, "Zelda? I love Ocarina of Time! I haven't played that game in a while," or something along those lines. But, I worn Zelda gear to school, and my peers ask, "What is Zelda?" The younger generation seems to be out of touch with good games like Zelda, Chrono Trigger, and Final Fantasy. They are used to FPS now, and don't take the time to explore all the awesome games that the gaming world has to offer. So, in short, Zelda is very underrated, but mostly by the younger generations.