Rarity is suffering from creative burnout, and Rainbow Dash decides to help by dragging her to a concert of her favorite band, Villian Court, led by one Twilight Sparkle. Things quickly spiral out of control in ways Rainbow couldn't have anticipated (but doesn't mind).

Have some Anthro RariTwi AU, because Earthsong apparently decided that I was not busy enough with my existing fics and tossed what she called the "Reverse Rockstar AU" (basically a role-flip of her Rockstar AU, where Rarity is a rockstar and then meets Twilight) onto my Tumblr dashboard. And I took one look at the picture and started to write.
Since then, we exchanged WIPs and ideas, and by now, her AU (now called the "Rock'n'Royal AU") and this fic are very similar, but also slightly different as we both worked on angles in different ways. It's been a wild ride so far, and I loved every minute of it!

Cover art done by Earthsong, which is fitting since she's the one who handed me this plotbunny to begin with. Fic title inspired by the song "Rock the Casbah" by The Clash.

Fevers, hoarding, and throwing up the strongest acid any toilet has ever seen. These seemingly innocuous symptoms (okay, maybe not so much the last one) are the telltale signs that Twilight Velvet recognizes as part of the family medical history. There was a strange branch of the family tree that had been handled discreetly. But the time for such discretion is over, Twilight’s symptoms aren’t responding to the usual treatment. It’s time to explore that branch, learn from it and bring her life back to a new normal.

This is the story of Twilight and her secret dragon heritage.

Amazing! Cover Art By: Anonpencil

After the Friendship Games, Sunset feels it's time to return home.

Only when she gets there, Twilight's castle is nowhere to be found, Cadance just got her horn, and Princess Celestia is still calling the bacon-haired pony her prized student rather than a failed one. And just reliving her past isn't on the table thanks to a pair of wings Sunset seems to have sprouted upon her return to Equestria.

With Sunset being back before she's supposed to, will the world stay as harmonious and on track, or will everything go down in flames as Sunset has to deal with allegations that she's really a changeling in disguise, a nerdy stallion with blue hair that wants to be her coltfriend, a pretty pink princess in need of remedial magic lessons, and an annoying purple pre-teen pony that will absolutely not go to bed without first being read Starswirl's Complete Mystical Mysteries Compendium?

Only time will tell

Lazy Pines is a small town in the high country of Colorado, easily overshadowed by the bigger sights to see along Colorado State 9. When influenza strikes the town hard, it is little more than a statistical blip in a typical flu season. No one thinks any more of it as the initial wave of infection passes ... until the other symptoms begin to manifest.

Meanwhile, during what should have been a routine trip to Canterlot, Twilight Sparkle stumbles upon a strange anomaly which turns into an all-consuming mystery. As she discovers the complex web of magic stubbornly maintaining this mystery's secrets, she grows worried what it could mean for herself and her family.

And as the residents of Lazy Pines struggle to understand -- or even believe -- what is happening to them, two worlds have irrevocably been set on a direct collision course.

Updates every other weekend.

Cover art by Mix-up. Please check out more artwork by this talented artist.

Now has its own TV Tropes page thanks to redandready45.

This story is a sequel to The Face I'll Wear

Dear Small Pony Book,

Hello. My name is Thorax. I am a changeling formerly of the Badlands Hive, ruled by the terrible Queen Chrysalis. Nowadays, I am fortunate to call the Crystal Empire home, and their Royal Family my friends.

Since I'm rather new to living in pony society—without orders to infiltrate, of course—my new friends have been doing their very best to help me get acclimated to this strange, alien way of life. To this end, Princess Cadence has instructed me to tell you of my experiences so that we might use this as time to reflect together. However, I do find it strange. How am I to discuss my day to day interactions with a book? Especially one without a name? You can't not have a name, that would just be rude. So, I will just have to figure one out for you.

I'm not sure why Cadence is laughing at that, or why Shining Armor is groaning. This is a very serious issue.

These ponies are strange. But I don't think I'd have them any other way.

A little thing for me to fiddle with when I'm bored. Updates will likely be sporadic. Tagged as a prequel/sequel to The Face I'll Wear because it will explore some of the same themes and will show events before and after the story.

Preread by Timaeus.

Worlds apart, Princess Celestia's dream comes into contact with a human on Earth. To her, he's a handsome stallion with a funny accent. To him, she's a gorgeous woman ruling an odd kingdom. As they go to sleep each night, they dream of each other and a bond develops that neither one expected, only to be tested as things begin to change on Earth.

The only thing that can beat an AI is another AI. Unfortunately for Celestia, she isn't the only one the humans made and the others don't want ponies. Of course, if Celestia has her way that won't be the case for very long.

The AIs contest with one another, attempting to be the one who will become the singularity and consume the world to whatever end they choose. In the end only one can have all the matter in the universe, in the end there can be only one.

Yet no matter what they value or how dangerous they are, many of them still meet Celestia's definition of human. Celestia will have to deal with them by satisfying their values through friendship and ponies.

An Optimalverse story, but a very non-canon 'B-universe' one.
Ideas stolen from this guy and this guy and this guy and this guy

Stripped of my humanity, torn from my world and procedurally trained into the perfect lapdog by a deranged madman.

Mad pony, I guess, although I hardly see how thats any better.

A thousand years have passed in the blink of an eye...

Are we... free?

This story is a sequel to Twilight Sparkle Becomes a Changeling Queen, Book 1

Twilight Sparkle is a changeling queen. She has found herself back at the old hive, with old memories... and new opportunities. She brings a new, more pony perspective to changeling problems; and she's very excited to experiment at finding new solutions with the help of her willing and eager subjects.

But some things do not change. A queen must also defend her subjects from any who would do them harm...

Set after season three.

After Starlight hypnotized her friends, Twilight goes out of her way to teach them how to control their own minds before someone else does.

It doesn't go too well.