Sequel: Left Behind: Sunny Disposition
Apparently it was scouted and is on EqD too

Nightmare Moon was meant to be released after a thousand years. A momentous occasion for her but terrifying for all the ponies on her day of freedom. She would get revenge on her sister and cover the world in darkness and shape everything to fit it.

That was the plan, at least. Instead, something went awry with the spell and she wasn't released when she was supposed to be. The mare-in-the-moon is brought into a world with stagnated technology, giant cities, and no sign of her sister or any of the other immortals. In fact, ponies don't seem terrified of her at all, and the stay within the core of her powers infused and changed the alicorn's body drastically.

The alicorn had no obstacles left! But...she was also a relic of the past. A past everyone seemed to have forgotten. A past she could no longer look upon.

Artwork by ElkaArt. Link in source.
Big thanks to Kryostase for helping spot errors I've missed.

The history of Equestria spans dozens of centuries, and many terrible foes have risen up from the past to threaten the future once more, only to be defeated.

When a vicious and powerful enemy older than any Twilight, her friends, or even the Princesses have faced before returns, they will have to reach out to an ally just as ancient for help... but is she still the heroine she once was?

This story takes place after the end of Season 3.

Honourable Mention: Best Fimfiction, Pony Awards 2013

Full-Cast, Illustrated Audio Drama version by Scribbler Productions can be found here!

Hardcopy editions from Ponyfeather Publishing can be found here!

No important political meetings to attend? Check! No letters to answer? Check! A magical and child-safe gift for Flurry Heart that she's sure to love? Check!

Her schedule was clear. Shining and Cadence were off on vacation. She'd prepared all her materials. Twilight Sparkle was more than ready to spend a fun-filled weekend babysitting her favorite niece.

But she wasn't prepared for King Sombra's return. Nopony could prepare to be trapped with him inside a storybook of fairy tales.

And nopony's ever ready for an unhappy ending...

Proofread by: Alicornpriest

Winner of November 2017 NaPoWriMo: Goal of 50k smashed!

Now Featured on Equestria Daily - First hit the Featured Box on April 28th!

Twilight Sparkle was banished from Equestria a long time ago for a crime she didn't commit. The rest of the Mane 6 have been searching for her to tell her that she can return. When they do find Twilight, they realize that the trials of surviving outside Equestria have changed their old friend. Not all the changes are necessarily good.

As they return to Equestria, they must figure out who is opposing them. Shadows lurk in every corner, enemies watching for a single misstep. Not to mention, Twilight's shadows are creeping up on her. But even if they do manage to face the trials and troubles, do they have what it takes to face what awaits them back home?

If you want to chat to me, we have a discord server here!

Editing team: Stinium_Ruide
People who've helped me before:
Ex-coauthor: computerneek
Ex-editor: Holtinater

Magic is real, and Derek is on the verge of unlocking its secrets. It doesn't matter that his best friend doesn't believe any of it, he'll still go along to his first real spell. Unfortunately for the two of them, the magic works a little too well.

Soon they're taken to a strange new world of supernatural horses, a world where intrigue and spellcraft are interwoven to an inescapable prison. An mysterious cult dedicated to the worship of the ancient Alicorns has finally brought two of the ancients back from banishment. Their spell didn't quite work out; they definitely expected the Old Gods to be a little... older.

If the two former humans want to have any hope of seeing their old world and old bodies again, they'll have to make quite an impression to their secret worshipers, or else find themselves at the mercy of the same Alicorn sisters who took over Equestria all those centuries ago.

That's only where their problems start. Growing up as a little pony in a town like Willowbrook might be the greatest challenge they've ever faced.

Updates on Saturdays. This story was edited by Bitera and Sparktail. Cover by Zutcha.

This story was commissioned as a Patreon reward.

Sunset Shimmer has finally decided to remain in the human world after the events of the Friendship Games, and has also resolved to study magic in her adopted home and defend it from any threats of dark magic alongside her friends. Then a mysterious incident leads Sunset and her friends to run straight into a dangerous world of supernatural beings that have existed in the human world for eons; twisted souls known as Hollows and the beings known as Soul Reapers that battle them. Where will this twist of fate lead the girls, and what secrets might be uncovered about their pasts in the process?

A crossover series between Equestria Girls and the Bleach anime/manga by Tite Kubo.

Now with TVTropes page!

New cover image by - Feather Book
Previous cover image by - Skijarama