This is gonna be met with a lot of divided opinions:
Skyward Sword.
It damn near perfected the classic OoT formula. The game looked fantastic for the system, the motion controls (when you know what you're doing and not just flailing the damn thing around like you're trying to swat a fly in mid-air with your bare hand) are the best for any Wii game and really went above and beyond in immersing me in the world full of characters I absolutely adore (Best Link and Zelda in the series! And the best relationship between the two in the series as well. Groose, my main man! I loved Ghirahim and Demise as villains! Both past and present versions of Impa. Fi, even though I have some problems with her, I still love her all the same!) And the world itself felt like one giant dungeon constantly challenging me and making me ponder "What's next? How do I solve this one?" The amazing soundtrack - Starting from the Wii menu music that plays before you even start the game. The dungeons are the best the series has to offer! It was the game that made me fall in love with the Zelda series and made it my de-facto #2 favorite gaming franchise behind Sonic (Try not to laugh, I know.)
Does it have flaws? Ohhhh, yes it does. Fi can be annoying at times, especially with the hand-holding at the beginning and the constant reminder of the batteries (Which doesn't happen if you change them before they get to that point.) Or how every time you boot up the game, you have to look at the text logs for each item you pick up AGAIN. And padding, especially in the last part of the game.
But, y'know what? I still love this game to death despite its flaws - Flaws that were mostly addressed and mitigated in the HD version, thankfully. (Fi's handholding and interruptions were dialed back significantly. No more text logs every time you start the game, 60 fps.)
And I know that back then, the very linear structure of the game was something fans considered a negative and a flaw back then. Something I NEVER agreed with. And after Breath of the Wild and ESPECIALLY Tears of the Kingdom, most people can see why and I've seen some people changing their tune on that. There's absolutely nothing wrong with linearity as long as it's concise and constructed in a way to where the world and the story they are trying to tell in the world makes sense, which Skyward Sword does.
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