Twilight Sparkle broke time when she got her cutie mark. Now Twilight and Sparkle are sisters from another time. Twilight is hailed as the potentially greatest light magician of all time, and already has a reputation as a hero by the time she goes to Ponyville. This isn't her story, not primarily.

Sparkle is an orphan - her dark magic killed her parents. She lives with her brother in Canterlot's industrial sector because they can't afford anything better. She can't leave either. She's a natural dark mage; while Sparkle won't go mad like Sombra, her reputation is hardly any better. Worse, the law doesn't see her as a good pony.

The fact that the dead don't stay dead around her, or that Thorn - Spike's double - is an undead, soul-eating abomination, are other matters altogether.

(Also has some Slice-of-Life, but fimfiction tags won't let me put it with Adventure.)

Has an ask blog to go with it: Ask Sparkle and Thorn.
Also has a TvTropes page: Split Second Tropes.

Featured on EQD.

Cover art by Swirling Line.

Diamond Tiara's life after the Fall.

A Fallen World vignette.

Set in the same world as The Archer And The Smith

Steady Hoof is a skilled thief who has been driven out from his home in the Heartland to seek refuge in the City of Gardens and Cages. When his life is saved by a pegasus named Scootaloo, he is instantly smitten. But her life has been hard, and she has forsaken love. To win her over, Steady must brave the dark heart of the city and do the impossible: steal the Tyrant's heart.

Set in the same world as The Archer and The Smith

The Shaper is a smith of unparalleled skill, her creations the most sought after in the fallen world. When a pony named Lyra comes to her with a unique commission she has to put all her skill to the test to craft a weapon of great power. For Lyra's goal is not an easy one, and it is not just any weapon that can kill a Dragon.

A story inspired by this and this image, as well as this challenge by CDRW (whose fic A Still More Glorious Dawn Awaits is quite good).

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

This story is a sequel to Split Second

Twelve years ago, she broke time. Two alternate timelines exist, each with a different version of Twilight Sparkle. Both versions of her are able to see the other. In this timeline, Sparkle is a Necromancer.

Or rather, she was. Sparkle is dead now, not that she cares. She's got a new body. With Thorn (her undead dragon son) and Cobalt (her apprentice and an assassin for hire) at her side, she's ready to take on the world. Again.

(Spoilers in the comments. Read at your own risk.)

Featured on EQD.
The Tv Tropes page
The Ask Blog

This story is a sequel to Split Second and won't make sense without it.
This story also loosely shares continuity with Lupine Tree. Reading that is not required.

Cover art by Swirling Line.

We all know the story of how the Princess’ young student and five friends defeated Nightmare Moon and brought Princess Luna back to our lands. But what if the tale were false? What if the young Twilight Sparkle on the event of her entrance exam had not been rescued by Princess Celestia, but instead lost her mind among the power of her youthful surge and had to be sent away, far away before she could destroy all of Canterlot with her newfound power. Now the feral unicorn prowling the Everfree Forest only vaguely remembers her past, slipping away from constant terrifying attempts to capture her.

And she is beginning to remember what true power felt like.

Editors include: Peter, Justin, Featherprop, Mitch H, and Bad Horse
Featured on Equestria Daily
Reviewed by Chris on One Man's Pony Ramblings and by Paul Asaran on his review blog
Now with a TV Tropes page

Physical books are available on Lulu.com
Monster in the Twilight (Paperback) 272 pages
Monster in the Twilight (Hardback)

A changeling who has lived at the side of an Equestrian mare for most of his life finds himself in the middle of the changeling invasion of Canterlot. He has no idea who the invading queen or hive are, and just wants to stay where he is, and more importantly, who he is.

The spell that ends the invasion doesn't discriminate, though. With his old pony form irreversibly stripped away, and the whole kingdom out to hunt his kind, he tries to keep his family together, and struggles to find his place in the world.

Please comment! Even now, I'd love to hear what people think as they read through

EPUB download
PDF download

Czech version:
Flitter on Google Docs translated by Draim (published at bronies.cz)

Russian version:
Флиттер on ponyfiction.org translated by repitter.
Audio book on YouTube by Diogenus.

Spanish version:
Flitter on DeviantArt, translated by SPANIARD KIWI.

Midnight Storm has had a hard life. She's wandered from city to city for the past three years, and they've all eventually run her out after they've found out what she is. Against her better judgement, she's placed her last hopes on the small town of Ponyville.

The residents here are nice enough, but when they find out what she really is, will they accept her, or drive her out like all the others? And when Celestia finds out about her, what plans does the Princess of the Sun have in store for the mare?

Cover image by Valkyrie-girl

Story now included in The Goodfic Bin

Over a thousand years ago, two royal siblings fought for the sky and were exiled, one by her sister's hoof, and one in penance for what she had done.

In the present Republic of Equestria, no one remembers them as anything more than legends and old pony tales. Save for one shy filly who fell from the sky one fine summer's day.

An Alternate Universe "What If" tale, reconstructing the beginning from a different angle.