In a dark, cold place bored into the core of Mount Canterhorn, a God is being born. Twilight Sparkle, the Solarian Union's most gifted mind, is overseeing its birth. When the Tower is complete, it will unite the Union and the world, overseeing infastructure, communication, automation of every kind. It is the ultimate marriage of science and magic, and the great work which will usher in a new age.

Twilight watches her creation taking shape in the void, and loses herself in its terrifying mystery. The God they are bringing into Being is not the mere machine they set out to build.

For almost a year now, Trixie has been sending letters to Twilight. The only problem is, Twilight hasn't gotten a single one... until today. But now that she has, Twilight is left with more questions than she knows how to answer. Fortunately, she has a plan. Unfortunately, she doesn't know if that plan will work.

Featured on Equestria Daily
Reading by: WhoLandon
Reading by: PonyFicsOutLoud

People seem to give Reversed Gender Roles In Equestria a bad name. But what if they actually had... like... healthy gender norms BUT WERE STILL REVERSED? ... Yeah it's about as fun as you'd expect.

Part of the B_25 vs Flutterpriest 24 Hour Writeoff

Anon is happy with Twilight. Really. She loves the ornate castle, the lovely meals she eats, and, most of all, loves Twilight herself. It's so wonderful and beautiful in Equestria that Anon almost forgets she used to be human.

Almost.

My fourth-place entry to the Filly Anon Contest. A different approach to the idea, leaning in a more serious direction than many authors take the concept.

Edited expertly by SirReal.

[WARNING: Contains ear scratching, belly rubs, and blushing cheeks]

Anonymous is sent to jail for his most heinous crimes of bullying in the second degree, there he meets a mare working as a prison guard called Cookies 'n Cream.

Written originally for the Anon in Pone Prison threads on /mlp/, which is where the OC Cookies 'n Cream (Pictured) comes from.

Anon had a bad feeling when he saw the ice cream machine outside Firmly Asked Questions. Not only was the world softer and fluffier than he had anticipated, but he would also have to watch his weight.
{This story has two versions, the last chapter is the first person version.}
(RGRE)

An English knight married a kindly woman, touched in the head, who thought she was an alicorn. She was right.

Then one day Cecilia disappeared.

He knew that Cecilia vanished into the side of the statue, the same place she lamented the 'mirror closing' two and a half years ago. He threw a rock at it... and it vanished. It was true. He had to find her.

He didn't care about Cecilia's madness, about this 'Equestria' or her obsession with ponies. He loved her. He loved her enough to walk into Hell itself. He would bring her back, no matter what.

TV Tropes page

Non-canon chapters 8-12

Edited by: John Hood, OkemosBrony, Legion222 & Katherine Kerensky (Chapters 1-12)
Guest Editor: refferree

[Complete! With TVTropes apparently!]
Also, apparently, an animated trailer.

In a world of brass and steam, Twilight Sparkle had thought she had made a life-changing discovery with the invention of the telescope. For better or worse, she was correct.

Now her discovery has not only changed her life, but the lives of those she seeks out in her desperate attempt to contact the only other creature as lonely as Twilight herself.

It all would have been much simpler, but it had to be the one Twilight could only call The Mare on the Moon.

Decidedly not within walking distance, then.

[Featured on EQD before story was meant to be submitted. 4/03/2015]

[Editing team: Southpaw, Wolfvenom, Maskedferret, SwanSong and BluePaladin42, without whom this story would be a fraction of its current state.]
[Special thanks to Novel-Idea for the updated cover]

Running across Equestria, a vast network of pipes transfers soup from the mines out West to hungry ponies on the East Coast. Few ponies sitting down to a bowl of fresh cazuela ever think about the soup pipeline.

For Langy, it’s her job. It’s her life.

The soup must flow.

Now with an audio reading by Wonder Gala (on Soundcloud)

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.