You know, it was unbelievably convenient that when Twilight moved to Ponyville there just so happened to be an empty library waiting for her.

I mean... it's not like anypony else would have been using it, right?

...Right?

Oh dear.

Gods? Demons? What are we but specks being tossed about in the turmoil of an eternal playground of celestial beings?

Applejack has absolutely no idea, but you know what would be great on her day off? Baking a pie.

Shining Armor learns the most important tactical lesson of his life.

Audio version! https://youtu.be/YgDr0Xc6rN8

Now with a Spanish translation by Spaniard Kiwi!

When Pinkie Pie left home, she promised her parents she'd write home. A few years after the fact, she decides it'd be best to keep them informed of how she's doing.

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Second Place in the EqD Nightmare Night 2012 Fanfic Competition

The Key is in the Subtleties

(Some pieces of subtlety may have been lost between Google Docs and here, but I don't dare touch this after what this version's accomplished.)

Thrust into the world of her favorite book-series, Rainbow Dash finds herself dragged along for the ride of Daring Do's latest adventure. Mind-boggling as it may be, things are about to get far more complicated. For Rainbow Dash, breaking the fourth wall may very well prove to be a learning experience.

TAGS: Learning curve, Breaking the Fourth Wall for beginners, "Rainbow Sense", Where is Pinkie Pie?

This story was conceived long before the episodes "Daring Don't" and "Power Ponies".
For the sake of this story, Daring Do remains a fictional character, the author remains anonymous, and there is no such thing as a store selling "enchanted" comic-books.

This story is available as an audio-book (text-to-speech synthesized), see individual chapters for links.

Story excerpt:

It still bothered her how she had gotten here, how it was even possible that she was walking side-by-side through some buried underground-structure, with her favourite fictional character become flesh. But as they resumed trotting deeper into the temple, Dash's thoughts kept going back to the event.

"No", Dash told herself, sternly. "That's - that's not it."

She almost would have compared the experience to "Pinkie Sense" of all things!

But she had seen something out of the corner of her eye. It had been... letters. Words. A sentence.

Something along the lines of "... the characteristic noise of a ... spikes closing in right behind ... Rainbow Dash slammed her body into ... ".

And then she had acted, before the trap was even visible. She had known what was going to happen, before it happened.

She ... she had read the next paragraph.

Story-related artwork:
[1] [2]

Prince Blueblood asks Princess Twilight to marry him. She gives the rational response.

When Twilight Sparkle slipped beneath the covers last night, everything had been fine. She had friends whom she loved, a teacher she adored, and a bright future ahead of her. But when she woke up, her blankets and quilts had been replaced by hospital gowns and padded restraints.

Everything is wrong and nothing makes sense; even her friends have changed. The doctors keep telling her that she is sick, that none of it was real and that it was all in her head. Yet she remembers a life far beyond the hospital walls. She couldn't have made it all up on her own. They must be lying… right?

Ask Asylum Twilight - Still updating regularly!
Equestria Daily
TVTropes
Asylum Fan Group
The Tartarus Project
Russian Translation
The Asylum 20,000 View Spectacular Stage Show!

Art:
Asylum Cover by conicer
Twilight and Twilight Smiles by dreamingnoctis
Mirror Twilight and Plague Doctor by Jaestring / BloodGoldWings
Twilight Smiles and Doctor AJ by conicer
Nurse Ratchet and Silas and What's in the mirror? by Archonix
Doctor AJ Sketch by Archonix | Colored and vectored version by ReFro82
Twilight's Asylum by Khan the Cake Lover
Smilight by HappySwitch
Twilight Waking Up by Dombrus
Fan Art by toxicdemon10
Asylum Twilight by Madness-With-Reason
Asylum Fluttershy and Asylum Ch 26 by Downburst-Backspace
Twilight and her Twin by v747
Birdgirl by sirValter

Readings and Videos:
Asylum Animated Trailer Video by formuladash
Reading by Gammarobot (SugarCubeRadio): All Chapters Here
Reading by Ender Brony: All Chapters Here
Reading by VisualPony: All Chapters Here
Reading by MelancholyIguana: All Chapters Here
Fan Trailer by Kaidan: Asylum FanFic Trailer Cuckoo's Nest

Sanctuary by Kaidan
Broadhoof Files: Dr. Humors by TypewriterError
Broadhoof Files: Corporal Phalanx Spear (Ret.) by Phalanx Spear
A Hearth's Warming Tragedy by Seven Fates

A special thanks to Breath of Plagues, Rex Ivan,
ChudoJogurt, Cynewulf, Death the Kid, Selbi, PrinceDolph, Blahman2816, Queue, and Gage!

Axan Zenith - Dr. Dreamer
Dratini4 - Way Finder
psychicscubadiver - Bright Mind
Velkaden - Dream Chaser
Reese - Silver Glow
Viola Heartstrings - Clover
Archonix - Spinney Whiteacre

Equestria is not what it seems. The web of lies and deceit upon which the kingdom has rested for thousands of years is slowly unraveling, and with it goes the safety that ponykind has enjoyed since the times of legend. In the midst of this upheaval, a young unicorn stumbles into a conflict that is beyond his comprehension. Thrust into a world of unfathomably powerful magic, miraculous technology and dark forces older than the world itself, he desperately fights to save his home from the onrushing storm.

Quick note: Added an 'Alternate Universe' tag because while I think everything fits within the show's canon, as most of it takes place outside Equestria, the world has drifted quite a bit beyond what's in the show. In addition, FIMFiction lacks a sci-fi tag, which this story sorely needs, and this is as close as I can get.