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.

With the defeat of the sirens and her subsequent acceptance at school, Sunset Shimmer had thought her life had made a turn for the better.

She thought it would be easy to simply forget the Dazzlings.

However, a run-in with Sonata Dusk brings in another perspective on the whole Battle of the Bands episode, one Sunset had never really stopped to contemplate.

After all, it takes one monster to understand another...
Right?

Featured 11/1/14 - 11/5/14

In the middle of the night, filly Luna is cursed by an unknown enemy. She will gain power faster than other Alicorns, and possess the powers of an Alicorn much older than herself. This power might become a danger. To protect her, her parents hide this curse from the kingdom, the castle staff, family, and most importantly, Celestia. But what happens when she can't control her power? Will she learn to control it, or will she become the monster she was cursed to be and leave Equestria to crumble at her hooves?

In case you couldn't tell, yes, this IS a Frozen parody. Please, do not judge me. Every chapter will be based off of a scene/song from the movie. Some chapters will contain parodized versions of some songs.

EDIT: There is now an Offical Soundtrack!

This story is a sequel to Where Did Daddy Go?

Even after many years... his love for her never faded... The one, who held a special place in his heart. Well, no more waiting! No more hoping! He was going to find her, and damn anypony to Tartarus that would try to stop him.

Prequel by UniqueSKD
Collaboration with Lucky 424
Edited by Flamer_Brony
Artwork by Neko-Me

On secret assignment from Princess Celestia herself, Twilight investigates a powerful magical artifact for clues to the mystery of Luna's transformation in the evil Nightmare Moon. Incautious use of the artifact sends Twilight hurtling back in time. Can Twilight discover what caused Luna's transformation? And will she ever make it home again?

Kickass cover art used with permission from Bitz.
http://allthebitz.tumblr.com/