Oh and what about the Satellaview Zeldas?
Unfinished, unreleased and nobody's played them. And no, testing the shit dumps on an emulator does not count. They weren't meant to be played that way.
As for Zelda II... I actually read in a magazine that it was originally meant to be some typical Famicom action RPG, but in mid-development they decided to slap the Zelda name on it just because the first game was so successful. A little plan to use a popular name to make it sell better. They failed. In Japan. It was very successful in Europe though.
By the way, for those who voted for the first game: what made you choose it? Do you actually consider it a good game? Why? Is it just nostalgia? It can be fun as a "pick up and play" game, but it's not exactly "good". It hasn't aged well.