Proof that the remaining 10% is worth having your HP to zero here:
These are recommendations made by Tropers for Sword Art OnlineFan Fics, 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.
Do warn when a fanfic may head into romantic or non-canon territory. Some people just don't like it, and as we all know, Shipping is Serious Business.
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Fairy Dance of Death by Catsy
Synopsis: What if Akihiko Kayaba had created the Death Game of Alfheim Online rather than the floating castle of Aincrad—a world in which the nine player races are explicitly in competition to escape the game, and player killing was not a crime but rather a predictable by-product of human nature and tribalism in the face of mutually exclusive goals? AU reboot of the SAO universe.
Synopsis: Kazuto was always exceptionally talented, but limited by his own idea of kindness. Having been corrected at an early age, he excels through life without much of a purpose. Now trapped in a rather gruesome death game of his own choice, he will attempt to break though it as Kirito, the famed Prince of Swords. Kirito/Multi
Comments: So what would happen if Kirito was never a loner and was taught to care about others? You will have this fanfic. Kirito is not only nice guy, but he isn't shy with the ladies and treats them well, has leadership skills and leads a badass of a guild composed of his Battle Harem! Highly recommended.
Synopsis: What if it was Kirito's mind that was trapped by Sugou Nobuyuki rather than Asuna's? How differently would the events of the Fairy Dance arc play out? Will Asuna and Kirito still be able to earn their happy ending or will there be a more tragic outcome?
Comments: Some torture and threat of rape; nothing that hasn't occurred in canon, but here it's to a somewhat higher degree.
The story has received some criticism for Arc Fatigue while others have been fine with the pacing.
Synopsis: Rather than a castle floating in the sky, Kayaba Akihiko has created a world where the dead refuse to stay put in their graves. Players fight to reclaim Aincrad, a massive city spanning 100 districts, from the grasp of the undead. But when they find themselves trapped in this nightmarish world, zombie-hunting ceases to be all fun and games. Welcome to SLD. Follows Kirito and Sinon.
Synopsis: What would have happened if certain characters' genders were altered while others remained the same? How differently would certain events play out & affect the development of certain relationships? Who will live & who will die? See how the alterations of certain characters' genders & histories will cause ripples throughout the story.
Comments: A well written set of stories showing the world through the eyes of ordinary players. Though the author has been wanting to rewrite Troubles Shared as this was the author's early take on SAO.
Synopsis: Ilya likes to play video games, and in the time she has remaining, Shirou is more than willing to play the new VR game with her. But when they are trapped inside the game, [Sword Art Online], they determine something even more distressing: Kayaba Akihiko is definitely a Magus.
Comments: What when you apply Nasuverse into the Sword Art Online story? You get this excellent story, featuring the cast of both series as they try to survive.
Synopsis: A cross-over between Zero no Tsukaima and Sword Art Online, Louise gets bodily reverse-summoned into Sword Art Online, just as Kayaba's Forced Teleportation gathers all 10,000 players for his announcement. The Death Game is on. The story is short, but well worth the read.
Pairing: Louise/Klein (Nothing happens aside from a kiss, and that takes place when she's 18.
Synopsis: Louise got her wish to summon the most impressive familiar in her class when she ripped the entire Alfheim setting out of cyberspace and dumped it over Tristain. There's a giant tree looming over the academy, 61,000 "elves" who don't know why they're suddenly able to feel pain, monsters running amok in the countryside, and one particular black swordsman with an awful sense of deja vu. But what's become of Asuna, and what will the local schemers make of these new arrivals?
Synopsis: "This wasn't just another scam gone wrong, it was a full-blown disaster! Follow the Eds as they are flung into the virtual world of Sword Art Online, and struggle to survive this horrid death game. Will they live long enough to see the game's end, or die trying?"
Comments: When Ed wins a contest from the back of a manga, and subsequently receives a copy of SAO and a set of NerveGear, Eddy immediately jumps at the chance to scam the Cul-de-sac kids out of their money with "Ed's Cyber Cafe- Featuring Sword Art Online." However, after some peer pressure, the Eds enter the world of SAO first as Richmond (Eddy), Einstein (Double-D), and Lothar (Ed), only to find they are now trapped in the game. While the idea comes off a bit odd, the author does a great job of showing how this experience is changing the Eds and forcing them to mature as people to try and survive the Death Game. Interestingly enough, the first of the trio to get this treatment is Eddy. With their imprisonment being mostly his fault, Eddy recognizes the pain his greed has caused them, resolving to clear the game and save his friends. This fic sadly doesn't have the recognition it deserves, even though it's writing and characterization is great. It's only three chapters long so far, but definitely worth the read.