Proof that the remaining 10% is worth dying for here.
These are recommendations made by Tropers for Percy Jackson and the Olympians fanfics, all of which have to be signed to stay on the page. Feel free to add a fanfic of your own to the list, but remember to use the template found here.
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Pairing(s): Mostly (almost exclusively) Percy/Annabeth, with some Nico/Rachel. The Nico/Rachel's not that great, but the Percy/Annabeth stuff is really good.
Comments: This is a very active site. The stories are much, much better than most of the crap you'll find on fanfiction.net - in fact, a lot of them are good enough to be published! The users are much nicer, with not a single troll or flamer (and any trolls or flamers that do come will be banned very quickly). If they don't like something about your story, they'll give you friendly, polite CC. Currently there are over 300 original, well-written stories. There's something in it for pretty much everyone, and I can almost guarantee that you'll love it.
Synopsis: One life is not enough for love; Percy and Annabeth try for the Isles of the Blest, but it seems that fate is not always kind to them. (Taken from the Pit)
Comments: Simple as the author's description reads, Percy and Annabeth go for reincarnation after the events of the books. Much, much better than it sounds. Each life (save for the third one) is a self-contained chapter, and while not as long as the books, it proves fascinating. A read that will keep you up from start to finish, tantalizing you until you complete it.
Synopsis: Unable to sleep, Percy, age 20, decides to finally ask his father some hard questions, never thinking that the answers might surprise him.
Comments: A nice post-series one shot that looks at what the world looks like four years later from Percy's point of view. It has wonderful characterization and despite how short it is has a very nice feel to it.
Seconded by cedarleaf. Wonderfully insightful into the relationship between Percy and his parents, both sad and sweet.
Synopsis: Aeolus has been kidnapped and it's up to Iceus, son of Zephyr, to find him. Iceus and his friends go on a quest to save Aeolus, but then one of them dies.
Synopsis: Annie doesn't know her father. When she finds out, she resents him more than just a little. Meanwhile, her friend Colin is apparently in love with her. Does she love him back, or is it just a crush?
Synopsis: She is one day from sixteen for all the days of her life. Thalia's story.
Comments: Tear Jerkingly beautiful, as the details of Thalia's life from six years old to 16. Touchingly sweat, chillingly dark, heart breakingly honest. There is not better look into the mind of the Daughter Of Zeus. Completely cannon to, with the exception of a single scene due to this being written pre-Last Olympian.
Synopsis: Scenes from The last Olympian from Nico's point of view. Shows more on the type of relationship Nico has with his father
Warnings:Spoils some of TLO
Comments: I liked it because you don't get to see a lot about Nico's struggle to gain his father's approval, to get him to join the fight or to find out more about his mother
Synopsis: To Be a Tree chronicles Thalia Grace's life after she was turned into a tree by her father, Zeus, and how she is still conscious within, listening to all the happenings of the camp.
Comments: To Be a Tree is a very interesting story that seems impossible. How could someone write in the point of view of a tree? But that's exactly what Trisha, the author, manages to do. The fic itself jumps around in capter length (which Trisha chalks up to half being written longhand and half writen on the computer), but even with its relative shortness, it's heartwarming and sweet.
Status: Ongoing, but with large gaps between updates.
Synopsis: A short ficlet about early in Thalia's life.
Comments: Focusing mostly on Thalia's love and care of Jason, and the subsequent fallout of his "death", this fic is cute, heartwarming, and incredibly sad all in the same moment.
Synopsis: Six times Poseidon openly checked on his son whilst he was growing up. After all - he was just checking that he was safe . . . Pre-series. Canon.
Comments: This is a really cute pre-series story with a nice portrayal of Poseidon's relationship with Sally and Percy.
Synopsis: Alice was living the ultimate irony when she fell down a hole and ended up in another world. The Underworld, to be precise. When she accidentally eats the food of the dead, she has to endure the punishment. Nico x OC
Comments: Still in progress. Alice is a very likable OC who isn't a Mary Sue. The author is really good at characterization, and there aren't many noticeable grammar mistakes.
Synopsis: The head councilors of each cabin are given a special reward; laptops! But what happens when someone with all the wisdom in the world runs into something with no wisdom at all? Hilarity, that's what.
Comments: What started out as an X meets Y fic has quickly turned into a charming comedy fic from the POV of Annabeth about her life as a normal teen hanging out with her friends. The characterization is very good, the shipping is there but not a main plot point, lots of continuity nods, and plenty of internet memes used in a way that isn't stupid or over bearing. Really makes you want to hang out at Half Blood. Still in progress, and in it's early stages.
Synopsis: The gods think they no longer need our kind. We are their children, their flesh and blood. They betrayed us. It is our time to fight back.
Comments: The story blends a good amount of realism versus the fantasy of the Percy Jackson stories. The plot is rather original, and while shipping is present it's kept at a minimum compared to the rest of the story. It's still in progress.
Synopsis: Seven years after the Giant War, the gods are after the demigods who break the ancient rules and reveal a secret that even they didn't know. Percy Jackson mysteriously disappears, and the Prophetical Seven is forced to go into hiding, yet the world's at stake. Some mistakes have terrible consequences... In another seven years, a young mortal, Peter, arrives at Camp Half blood, claiming to know where his "brother" is. With two friends who pick a quarrel every few minutes, and monsters on their trail after the mysterious demigod scent, he goes on a quest - and if the demigods find the Quests advanced stuff, what could you say about a mortal?
Comments: Post-Heroes of Olympus, In progress. Be prepared to laugh, cry and stare, and meet a lot of the good ol' favorites!
Sypnosis: Taken from the summary provided: Chiron always said there’d be legends about him one day. He hadn’t thought that’d result in him fighting to the death with other Heroes, though. Percy Jackson and the Olympians/F/SN.
Tags: Crossover
Comments: Thread 2 can be found here, while the current one is here.
Sypnosis: 'And I've removed the filter from your eyes which covered them before, so now, you'll easily distinguish between gods and men.' After the power of the Mist began to weaken, the demigods found themselves in the middle of a whole new world.
Tags: Crossover
Comments: A Dresden/Jackson crossover. Thread 2 can be found here
Summary: "Sorry," said the son of Hades, "but if I surrendered to an organization called the House of Life, my dad would kill me." After a run in with the Kanes, Nico unwittingly ends up becoming a host for the Egyptian death god Anubis.
Comments: An amazing fic which combines the aspects of both series fabulously. With serious action and some rare but uproariously funny humor, this is my second all-time favorite fic.
Seconded by cedarleaf. This troper was completely blown away by how outrageously awesome this story is and read the entire thing in one sitting because it's just that good. Characterizations are spot on, the action is engaging, conflicts are complex, and if you're not laughing at least thrice a chapter, then you need a new sense of humor. There isn't a single thing about this fic I don't recommend.
Comments: This is probably the most stupidest (in a good way) fanfic ever written, but you can't help it but keep laughing at Percy's adventures with Dora and Boots. I cannot describe this work. If you need something quick, funny, and stupid, I recommend you should give this fanfiction a try.
Summary: It didn't take long for the logical side of her to ascertain her location. She was, after all, a daughter of Athena. She was in his bed. Devoid of a few choice articles of clothing. Di immortales.
Comments: This fic is excellently well-written and really has gotten characterization down pat. It's something I enjoy reading again and again, and definitely deserves this recommendation.