[indspenceable]

I haven't played all of the new Zelda games (specifically, any after wind waker) but Majora's Mask definitely seems to be the most different. If you just play it straight through the standard zelda part (that is, just go dungeon to dungeon), its easy to miss how it was unique. However, when interacting with people, the ability to rewind time made some really interesting and totally different (from other zelda games) puzzles. The thing to focus on wasn't the form changes, or the "slow down time" ability but the "rewind to the beginning of the game and start over, but with knowledge of what you did last time". That game was unique in zelda games because one of the currencies the game used was player knowledge about what events happen when in the 3-day time frame of the game.

Zelda is a series that is established on certain traditions - you go from dungeon to dungeon, and in each one get a new piece of gear that lets you explore the world more. Looking just at that part of the game, every zelda game looks the same. But I think as a series it's generally good at varying a little bit from the formula.