I've played all of them but The CD-i Zelda games that don't really even count. The only one I didn't enjoy was Zelda II, but I didn't give it much of a chance either. Ocarina of Time is the best videogame ever made, and Majora's Mask, Wind Waker, and ALTTP are all fantastic. The GameBoy titles are a lot of fun, too, though the only one I finished was Oracle of Ages. It's the only series out there that I personally enjoy more than Final Fantasy, although Halo would probably come close; but it's only good in multiplayer. Zelda is just pure gaming gold.