Most of my fanfiction all fits into the same FAULTLINES universe. It's canon-compliant with the original book series, and broadly with JKR's early, post-series revelations about the wider wizarding world and the next generation. I cherry pick from Pottermore and the films (including FB), but treat Cursed Child and all game-lore as non-canon.
Eventually Faultlines will run from Founder-era to the end of Next Gen. Currently it's post-war Trio Era, and 2020s Next Gen. It's a bit of a sprawling epic, with multiple smaller series arcs, and lots planned that isn't published yet. The individual fics all link into each other, but almost all are entirely readable as stand-alones.
It started life in about 2010 on ff.net, but the early incarnations were somewhat different from where it's ended up. Some bits have been pruned out, lots more have been added.
In this house we love a complicated plot, a fun OC or ten, and a whole lot of additional worldbuilding.
FAULTLINES FICS UP ON AO3:
SCARS: 1998-1999. Post-war Harry/Ginny, slowburn rekindling of the relationship. Trauma, healing, Quidditch kids, and an Auror investigation into missing children that leads Harry into Knockturn Alley and secret werewolf communities. Background Ron/Hermione. The first fic of the REGROWTH series. Complete at 24 chapters.
UNFORGIVABLE: 2022-2023. A Next Generation ensemble cast Hogwarts adventure, also featuring Auror Harry and the other parentals. New threats rise in the Wizarding World as Harry investigates the cursing of a young Muggle girl. Loads of teenage drama and nonsense, alongside sinister dark magic societies. First in the DARK LEAGUE series. Complete at 33 chapters.
THESE MORTALS: Late 2023. Sequel to UNFORGIVABLE. The reverberations of the emergence of the sinister League of Magic still run through Hogwarts, but Albus is just trying to juggle Head Boy duties, NEWTs, and akward feelings for his ex, while his family won't stop causing chaos all around him. Featuring Lucy Weasley's theatre club attempting to stage Shakespeare with a group of 11-13-year-olds. Second in the DARK LEAGUE series. Complete at 25 chapters.
YOUR WORLD: 2024. James Sirius/OC. James falls for a Muggle, who also happens to be the best friend of his worst enemy. Navigating new love, strange worlds, and the Statute of Secrecy, while dealing with the fact that he threw away the possibility of his dream Quidditch career. Other Next Gen in the background. Technically part three of the DARK LEAGUE series, but really a little tangent on its own. WIP, 12/18 chapters published.
A TASTE OF FAULTLINES FICS TO COME:
ASHES: 1999-2000. Harry/Ginny post-war. Sequel to SCARS. Part two of REGROWTH. Harry and Ginny are back together but life in the spotlight brings its own challenges. Magical politics, new careers, trying to change the world. Plus the re-emergence of an elusive villain Harry swore he'd capture.
FIRECRAFT & HEXWORKS: 2026-27. Part Four of the DARK LEAGUE series. Fred II/OC. Fred Weasley steps in to help a girl in trouble, only to find that she's on the run from the League. But as secrets are revealed, she may not be the innocent victim she seems.
QUEEN OF HEARTS: c. 2027. Part Five of the DARK LEAGUE series. Lily Luna/OC. Lily sneaks into a Cabaret Night at the heart of Knockturn Alley expecting a wild night of fun. Instead, she finds herself in the middle of dark magic plots, and tangled up with a man she definitely shouldn't be with.
INHERITANCE: 2027-2028. Final Part of the DARK LEAGUE series. A vicious murder leads the Auror Department (including Trainee Auror Rose Weasley) onto the trail of the real forces behind the League. But the truth is deeper and older than they ever imagined. Featuring Hogwarts Quidditch, a mysterious little Muggleborn girl, ancient prophecies, unexpected kittens, embarassing hook-ups, budding romances, old pureblood grudges, and Lucy's theatre club again.
SLEEPING DRAGONS: The prequel to everything. A boy called Salazar arrives in a barely-unified England and meets the three people with whom he'll go down in legend. But his obsession with a dead man might cost him everything he loves - and send echoes down the centuries. The 'true story' of Salazar Slytherin.
plus lots more to come, in the form of backstories, side-fics, and sequels to particular arcs.
NON-FAULTLINES FICS:
are you breathing just a little & no fortress so strong: Less fics, just backstory set-up for an au roleplay, created with the friends who contributed to the same series. Expect crazy rare pairings and strange set-ups, because the goal was to go as different from canon as possible.
THE SHADOW OF THE SOUL: Somewhere in the pipeline of the future. A dark AU in which Voldemort won the war in 1981 and has reigned as Dark Lord for twenty-five years. No prophecy, no hallows, no horcrux-Harry. The Order of the Phoenix fights on from the underground, but far to the north a Muggleborn named Hermione Granger walks into the Hog's Head searching for a dead man, and nothing will be the same again. Harry/Ginny, Ron/Hermione, Draco/OC.