Oh boy, that is a HARD question ha ha. I’ve been reading fanfiction ever since I got hooked up to the internet. I have so many fics that I love, and to pick ten is hell XD I’ll pick out the 10 that come to mind right away as fics that I think that everyone should give a read, but there are way more for me, just to say :P. Here we go (in no particular order):
Sneak Away(Into the Burning Sands): This one is an nsfw Nabsgan fic, and the first smut fic I ever read for the Legend of Zelda. I remember like freaking out going “holy shit, I’m so dirty, who the hell would read smut for FICTIONAL characters in a KID’S video game” and then flipping out even more so because Ganondorf was my most favorite character ever. It took me a couple of clicks and back buttons before I finally sat down and read it, and it was hot and now look at where I am XD.
Conqueror and Captive: This one is a zelgan fic. I was so excited to read this one because it was one of the only fics at that time where Ganondorf was left at Zelda’s mercy, looking at the relationship from a different angle than what little zelgan fics out there did. I still reread this one from time to time :D
Chronicles of the Chosen Three: The Motherland: This one focuses on Ganondorf as he discovers the land where the Gerudo come from after they disappear from Hyrule. This one was a real feels trip for me, but the ending put a huge smile on my face. It also features a haughty Link which I thought was a perfect characterization for him, and when I think of Link, I usually think of him with this type of behaviour :P
Under Grey Skies: Anyone who ships zelgan has read this story, or became a zelgan shipper because of this story :P That would probably be because this is the first zelgan fic that came as close to canon as possible (without outright rape), and made this ship a plausible one (as messed up and manipulative as it was). It made me appreciate this ship more than ever.
Twilight of the Godesses: This was an amazing epic, where Ganondorf challenges the goddesses and exposes their flawed nature. It was a crazy ride from beginning to finish, and really fleshed out just how determined Ganondorf is when he sets his mind on something. There are moments in this fic that were calm and heartwarming that comes between all the action. A fantastic story.
Deja Vu- This one is a oneshot Ganondorf and Nabooru fic. It speaks about Nabooru and her regret of being unable to save her King, cursing her and her descendants/reincarnations to continuously search for him/his reincarnation through the land. It was really sweet, and stuck with me for a long time!
The Legend of Zelda-Sacred Reliquary- This one puts Zelda as the crue, cold ruler of Hyrule seeking to gather the Triforce for her own, and Ganondorf who is hiding from her and trying to stop her. The plot is very well fleshed out, and shows just why this reversal happened. Really great story if you like role reversal types.
Smashed Minds-This is Super Smash Bros fic, and quite dark in nature. All the smashers are in a mental asylum on an isolated island, and a reporter named David is one of the only ones who has been granted permission to visit this place. I highly recommended it (oh and Ganondorf is one of the main characters so even better :P).
Merciful Nayru, Not Another Self Insert!- Well, as the title says, it’s an author self insert with Ganondorf, and one of the only fics that have legit made me cry tears of laughter. Its part of a trilogy too, so if you want to read about the strangeness of self inserts and infuriating Dark Lords, here’s the fic for you XD
Just a Man- This one is Ganlink, where Ganondorf is captured and constantly as to deal with a mentally unstable Link. What amazed me about this fic is that the author was capable of fleshing out Link’s character quite well without making him utter a single word. This is probably my favorite Ganlink fic ever, and is how I discovered AO3 :P
And that’s 10 for ya! Apart from the last one, they’re all on fanfiction.net and I enjoyed them a lot. Hope that answers your question ;)