This brings up an interesting question, though: What specifically about Zelda 2 and Faxanadu prevents their classification as Metroidvanias? (I'm not arguing, I'm honestly curious.) With Zelda 2, I assume it's the fact that you enter the levels via an overworld, and that the game has somewhat linear progression. It does have an experience system, though it's very simple and limited. It actually has a lot in common with Order of Ecclesia, which I have been informed on here before, is not a true Metroidvania. I had to watch a video on Faxanadu to learn more about it, because I never played it, except for a few minutes via emulator. Seems closer to a Metroidvania than Zelda 2, though from what I saw, it's also fairly linear. I may be wrong, though, since I didn't watch the whole thing.