This story is a sequel to The Celestia Code

When the monsters created by the dark crystal engine escape their prison, it's up to Princess Twilight Sparkle to deal with them. She gets help and advice from Princess Luna, but things don't go as planned. In fact, when a pony who relies on logic and rationality tries to navigate the stormy seas of emotional entanglement while simultaneously saving Equestria from a horde of evil creatures intent on destroying everything they encounter, nothing goes as planned.
AUDIOBOOK by VisualPony
WARNING: Major spoilers in the comments.

Book 2 of the Alicorn Adventure series.

Goodreads Page
100% Approved by Twilight's Library!

The Badass Twilight tag applies more than ever, but please note the new tags.

This story is a fairly direct continuation of The Celestia Code. You might be able to follow it without having read The Celestia Code first, but it's better if you do.

The sequel is here: The Twilight Enigma

Most excellent pre-reading/editing done by the erudite AcademicPony and the dapper statoose!

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.

This story is a sequel to The Moon, The Flower, And The Door

Effective Immediately, This Story Has Been Cancelled.

"Anyone Can Be A Wizard..."

Morning Glory has succeeded in passing Princess Luna's test, and is now her personal protege... and soon to be her foster daughter. All seems to be sunshine, lollipops, and fluffy puppies forever... until Luna makes a discovery regarding the young filly's parentage, one that could wound the young filly's heart terribly. Keeping this information a secret seems wisest, especially given the connection the young filly has with Celestia's new student, but it soon becomes clear that this is just the tip of the iceberg, as the filly begins exhibiting strange and seemingly inexplicable talents. The young filly seems intent upon becoming a wizard, in spite of being an earth pony. Is such a thing possible, and is Equestria ready for it? And if so, what kind of a wizard would she be?

One thing soon becomes clear: No matter what the outcome turns out to be, something big is about to happen in Equestria, and when it's all over, nothing may ever be the same....

Vinyl Scratch is well known as DJ PON-3 across Equestria. Other than their music career, however, not much is known of the pony’s personal life as they struggle with their relationship, identity, past, music and coping with the effects of their actions on others.

Written by: Lady Froey
Edited by: Madeline L-Equine, Bad_Seed_72 and Proper Noun
Cover art by: Stella Lux (LumenGlace)

Takes place after: Major and Minor

Red Team had been given an assignment. It wasn't the usual sort of assignment. They were assigned to defend their base 'until further notice'...and then never received notice. All announcements sounded pre-recorded, and enemy assaults were few and far between. The enforced inactivity was slowly fraying the bonds of the team...

...until something unexpected arrived. A tiny creature appears one day in their fortress, in need of compassion and care. Somehow, she finds that in this group of strange individuals, as she becomes their baby.

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Crossover with Team Fortress 2.
Part of the PWNY-verse.

Edit: Since I get these comments a lot, I will say here, I've never played the game and don't intend to include much in the way of game mechanics, so please don't suggest such things.

Edit 2: FAN ART! for chapter 9 by G_Haze. Makes me so happy.
Edit 3: More fan art from G_Haze, This guy's amazing!
Edit 4: New fan art! by The Pyromanecer. Thanks so much!
Edit 5: More fan art by shiningkord98.
Edit 6: New Fan Art by The Pyromancer
Edit 6: More awesome fan art from G_Haze! So awesome!
Edit 7: New fan art by Pioneering Author

This story is a sequel to Fortresshy: The Nine Fathers

Fluttershy has returned to Equestria after being temporally displaced to another world, where she was raised by a loving but insane family. She didn't return alone, though. Her new family came back with her, now working for Princess Luna, their new Fortress being built near to Ponyville. All involved would need time to adjust.

Unfortunately, time waits for no one, pony or human. Still, the former RED Team - now Team RED MOON - is used to handling craziness. After all, they live under the same roof.

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Part of the PWNY-verse.

Edit: New fan art by G_Haze, who also did the cover art!

This story is a sequel to Spiders and Magic II: Eleven Months

Officially complete!

During a time of peace, Peter disappears in what seems to be an accident and is pronounced dead. However, he wakes up in a distant future where Equestria is in ruins, most of his loved ones are either dead or captured, and the world is under the rule of Empress Chrysalis. Spider-Mane must reunite with what remains of his friends to save this tattered future, all while desperately searching for a way to return to his original timeline.

*Thanks to Kestrel, Darth Cygnus, Commander Stelios, Regreme, Vandenbz, Lord Lycaon, The Slending Angel, cosmic flash, Derp McShirk, NeilHD, and Dark Seqvus, for editing!

Collab with Azu
Cover art done by JinZhan

Featured: 2/28/2015 -3/2/2015 (Thanks, everyone!)

This is the story of a brony, who inserted into Equestria.
But instead of a pony, he became the enemy of Celestia.

Would he decide to do what’s right, to love and tolerate
Or would his evil changeling nature make it hard to integrate

Then there is the question of the duty that is his natural birthright
Tasked by the changeling Queen, he was to murder Princess Twilight

So, here’s my attempt at a SI with a bit of a twist that others have done before. Go to Equestria, end up on the wrong side of the tracks, and have to deal with it. Enjoy!

Art provided by SoukiTsubasa

Twilight tries on her first pair of glasses, and though she enjoys them, something goes wrong. Anypony who merely looks at her faints on the spot, and she must figure out why before the entire city of Canterlot is compromised.

Cover art made by the talented and super cool MalWinters!

Now with a YouTube reading by Short Stories, and another YouTube reading by ZeusMacD

"And here you'll see the statue of the Lord of Chaos, Discord, imprisoned in stone..."

A group of students from the School for Gifted Unicorns are given a chance to visit Celestia's royal garden and a curious filly decides to ask about a statue that's in their tour, where they all hear the story of how the spirit of chaos fell into a stone imprisonment for the third and final time.

Art by: Kabudragon