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.

Sometimes its hard to be a narrator. Join one as he tries to write a Spike and Sweetie Belle ship fic. The attempt will take him quite a long way as the ponies show him that just cause you can type, doesn't mean anypony is gonna cooperate.

Edited With Help By Mountain Bell

The plan, he thought, was perfect. Instead of returning to the mortal world as a shade of his former self, King Sombra would transmute his soul into the body of his greatest foe, using her influence and power to destroy Equestria from the inside and take vengeance on the Princesses that stole his beloved empire.

There's just one problem: after her fight with Tirek, Twilight Sparkle changed her address. This turns out to be a much bigger problem than Sombra thought. A Dinky-Doo-sized problem, to be precise.

5th-place finalist in the More Most Dangerous Game contest.

Cover art crudely Photoshopped by me from this and this. I am art and so can you.

Reading by Neighrator Pony

It was supposed to be a fun day, but then everything changed when the spirit of an enemy passed traps Fluttershy, Applebloom, Scootaloo, Sweetiebelle, and Dinky Hooves in a haunted pizzeria. Now the five have to survive until their friends figure out a way to get them out of the messed up hell hole.

Community Collab
Chapter one, two, five, seven, and nine by Fossil-Dragon-messiah
Chapter three, four, six, eight, and ten by TheMusicalBoy93
Chapter 11 by both of us
Cover art by Keam

Trixie Lulamoon, down on her luck, begrudgingly applies for a job at Freddy Frazbear's Pizzeria. The run-down restaurant was far from the ideal job for her, but after...the amulet fiasco...it was the best she could find.

Thought I'd jump on the bandwagon- Five Nights at Freddy's crossover. Coverart is temporary; your reviews, comments, questions, or concerns are greatly appreciated, and will be processed within 90 days of being received upon discovery, or until the walls have been bleached, and the carpets replaced. Blah, blah, blah, anyway- first chapter should be a breeze, keep checking those updates, and I'll talk to you tomorrow, okay? Goodnight.

This story is a sequel to The Monster in the Twilight

Now that Luna has returned to the throne, and the aftermath of her brief appearance as Nightmare Moon is being cleaned up, the story is over. Right?

Not quite.

Twilight Sparkle had nearly been destroyed in the chaos of Nightmare Moon’s return, but now with the assistance of her five friends, she is facing a fascinating new world filled with wonderful things. No longer the scarred monster who nearly destroyed Canterlot and raged through the Everfree Forest for over a decade, now she has been healed by the Elements of Harmony and is living at the edge of town with her adoptive mother Zecora. Not all the fears of her past can be left behind that easily though, and now she must face the consequences of her actions as she faces the most daunting challenge of her life.

Ponyville.

Letters is a sequel to the alternate universe story The Monster in the Twilight. In this story, Twilight Sparkle exchanges letters with Princess Luna, two ponies with a common problem of fitting in and making friends after the destruction of Nightmare Moon.

Normally I would try to talk you into reading the sequel even if you haven’t read the original story, but in this case, you’ll probably be more confused than entertained. But go ahead. I don’t mind if you don’t read the first story. You’ll never find out what an Urlock is, but that’s fine. It’s your funeral.

Editing Assistance by Alicorn Priest, Peter and Tek

Credit for the incredible picture All Night Study Group goes to Bibliodragon at Deviantart

Physical books are available on Lulu.com (up to Chapter 82)
Letters From a Little Princess Monster (Paperback) 726 pages
Letters From a Little Princess Monster (Massive Hardback) 780 pages

Summer is the perfect season for things that grow. However, growth needs fuel, warmth can burn, and romance can be the most volatile fire there is. After she leaves Ponyville and lands a job as a city guard, Gilda will have summer days that are filled with lessons of growth, of love, and of pain.

This is a continuation of Heart of Gold, Feathers of Steel. I recommend reading that story first.
This story is concluded in Evening Flames

Special thanks to WentoX for this awesome, custom cover.

==Originally written spring 2011== Equestria Daily Post==
GLaDOS is free of Chell, free to continue testing, when she discovers a portal gun Wheatley tried to repair with duct tape. When the portal gun catastrophically fails, the enrichment center, GLaDOS, and Chell are literally dropped in the middle of Equestria. The mute test subject soon finds the world of ponies far more welcoming than the human world. But GLaDOS sees possibilities. Let the testing begin... for science.

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)

Friendship lasts forever.

Right?

Three years ago, Gilda and Rainbow Dash became fast friends at Junior Speedsters' Flight Camp. Time took its toll, though, and the pair drifted apart.

When Gilda tries to reconnect with her not-so-long lost friend, she'll discover that things can change a pony after three years: a new home, new job, and new friends.

This story continues in Summer Days

Title Image Credits
Original: http://mallorysbeast.deviantart.com
Coloring: Bandit (no link available)