Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.

When facing Twilight Sparkle, Nightmare Moon was given a choice: redemption or revenge. What if she had chosen the latter? A grim fate awaits Equestria, but in a time of greater strife and conflict, Discord's return is accelerated. While he expected to bring chaos, he did not anticipate that he would end the Longest Night and bring hope and joy back to the land.

Discord struggles to reconcile his nature with his desire for admiration. While Twilight's friends strive to carve a new life in the ever-shifting Equestria, she searches for Celestia, the only one who can bring harmony back to her lands. But Nightmare Moon also seeks her sister in a desperate attempt to find her place in the world. New dangers lurk in the wild and more threaten to fall over Equestria. Nightmare Moon's decision broke the balance of the world. Will Equestria ever turn to peace, or will the spiral of chaos and destruction be the end of everything?

(An alternate history, this story takes the universe established by the canon and explores one possible outcome if Princess Luna had not been redeemed.)

Comments contain huge spoilers. Walk softly.

Special thanks to my pre-readers, MmmandarinOrange and DarkmatterButterflies for keeping my head on, taking the journey of the story, and making it so much better than it would have been if I wrote it alone.

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)

Princess Twilight Sparkle discovers a centuries-old mystery hidden in the Royal Archives. Her investigation leads through layer after layer of deception and misdirection, setting her hooves on a path that seems to be leading to a mysterious secret. Along the way, she learns that some friendships can be very, very strange.

Book 1 of the Alicorn Adventure series.

AUDIOBOOK by VisualPony
Featured at the Royal Canterlot Library
TV Tropes Page (Courtesy of Sandtalon)
Goodreads Page (Courtesy of Facedeer)
Equestria Daily Page

WARNING: Major spoilers in the comments. Takes place several months after the end of season four. (Not a Da Vinci Code crossover, BTW!)

Do you see a dark tag? No, you don't. Not dark. Well, okay, there are a couple of dark-ish bits, but that's all. Not enough to warrant a tag. Speaking of tags, there really ought to be "Badass Twilight" and "Friendshipping" ones.

Sequels and side-stories (and more) can be found here Offprint and AO3, and a hardbound two-volume set of all that can be ordered from The Ministry of Image.

My editor for the first edition of this story was Gogito, and I can't thank him enough for all the hard work he did. My editor for the revised version was PresentPerfect, and he did a terrific job of getting the story into excellent shape.

After an accident, Twilight's life is turned upside down and changed forever.
With her friends standing by her, she must manage to overcome new obstacles, learn a new way of life, and discover just how long secrets last when hidden from those who know you best.

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Now in audiobook form!: Youtube

Twilight Sparkle has spent months researching chaos magic, developing a new spell to unlock magic nopony has ever experienced before. But when something goes wrong with casting, Twilight finds herself turned into a Draconequus and unable to control her new chaos magic. If she ever wants to be a pony again, there is only one who can help her learn to control her new magic.

Of course, learning from Discord was never going to be simple. And after a while, being a draconequus doesn't seem so bad anyway....

Based on the concept by Lopoddity

Editing by DB_Explorer
Proofreading by Mac349 (Ch. 1-11), Trippy998, Just A Fabulous Cat (Ch. 1-5), Doctor Candor and skysthelimit (Ch. 1-11).

To save her sister and her faithful student, Celestia herself must travel into the ancient tunnels beneath the ruined castle in the Everfree Forest. She, and the guards who accompany her, must face the dark, twisting corridors. Still, what was Luna and Twilight's purpose at the old castle? Why were they unable to return of their own accord?

And what watches Celestia from beyond the light's edge?

There are stories which define us. Stories that inspire us. And there are stories that damn us.

These are the Old Stories, tales from before the dawn of Equestria.

Spanish translation

The original EqD link is here: http://www.equestriadaily.com/2011/08/story-old-stories.html

Dreams are such delicate things, and Scootaloo’s are more fragile than most.

But in Equestria, dreams are protected. Sometimes a filly just needs a helping hoof to learn how to hope again.

Edited by Knight of Cerebus

Cover art by Joemasterpencil. Go check him out!

This story has a reading! Slightly older version of the story, but the reading is very well done. It can be found here.

Twilight takes a walk in the woods near Canterlot to clear her mind, when a mischievous little phoenix starts dropping chestnut shells on her head. Quite a familiar mischievous little phoenix.

Somewhat inspired by the song "Evermore" by Alison Krauss, a story to perhaps make its reader smile.

Thanks go to Skywriter, GhostOfHeraclitus, and "Nettle" for pre-reading; and Ziom05 of deviantART for permission to use "Sun Springs" as the cover art.