During her entrance exam, Twilight's powers goes far out of control, leaving Celestia a shell of herself and Equestria in ruins. Now Nightmare Moon is free, but even she can't stop the Tyrant Filly. She flees through time and space, finding herself in an Equestria familiar to us but odd to her. Can the Mane Six help her stop a Twilight out of control?

Fanfiction.net link here!
Weekly featured fic in Authors Helping Authors group

TV Tropes Page, with sincere thanks to DrTempo.

Cover art from here.

This follows the events described in the Cutie Mark Chronicles, with one small change: The Sonic Rainboom doesn't happen like it was supposed to. Six destinies fail to start. But when one door closes, another one opens.

Cover Art by Inspired_Light

This is supposed to be close to Canon, but since history is altered and the characters don't experience many of the events that make them who they are in the show I'm listing this as alternate universe (does that make sense?)
For the same reason I'm listing the OC tag, even though the OCs are the mane 6 living different lives.

Nopony dies, nopony suffers permanent psychological scarring, and no irrational whirlwind romances happen.
If I have inadvertently included somepony's OC I apologize.

Warning: contents may contain Existentialism. The facility used also handles peanut based products and wheat gluten.

The Great Tragedy. The night an era ended. The night the skies stopped turning. The night the Canterlot palace, along with all of its occupants, was utterly obliterated.
Nopony knows how it was done or by whom. But they do know that one unicorn stood at the center of that calamitous explosion, and they know that Twilight Sparkle survived where two immortals had perished.
Twilight awakens in a world a shadow of its former self, abruptly thrust into the fallout of a disaster she remembers nothing of. Faced with a foe that is perhaps more familiar than she might realize, Twilight must find a way to restore her broken world and carry on the legacy of her beloved princesses.

Huge thanks to my proofreaders Some Person (chapter 1-12) and RazerWrites (chapter 12-14). The story would have been much worse off without them.

Twilight gets a feeder to study birds.

She also bought a ton of seeds for it.

While she's frustrated at the fact her supply seems to be disappearing into thin air, she's about to realize that she has a much bigger problem on hoof.

Ever had one of those days where everything's just gone wrong, one problem after another?

Of course you have.

Ever had one of those days when you wake up to find you've accidentally switched places with your counterpart in a world where you and all your friends are stallions?

...No?

Maybe that's just Twilight, then.

But the Princess of Magic isn't going to let a little thing like being in the wrong universe ruin her day. She has a schedule - a checklist! - and it matches up with this Dusk Shine's perfectly. Apart from the names and the genders, everything seems to be a match, and Ponyville has seen much weirder things since she moved here.

Being stallions or mares shouldn't make her friends that different. What could possibly go wrong?

The night after they defeated Nightmare Moon and rescued Princess Luna, Rainbow Dash finds Twilight on a hilltop outside Ponyville, staring up at Canterlot. Afterwards, the two find themselves returning to that same hilltop night after night, discussing their crazy adventures, and the things they've never shared with anypony else.

My entry for the 3.5 Twidash Competition.

Cover art made by me using vectors from the MLP Vector Club

In the dark depths of Asgard, Loki Odinson sits, punished for his crimes on Midgard.

But new developments cause the wayward son of Odin to escape his prison and seek refuge across the Nine Realms in a land very much unlike any he has ever seen: Equestria.

While Loki makes a new life for himself in Equestria, Thor must once again gather together the Avengers and give chase to his escaped kin. But will the lies Loki feeds his newfound friends send the Elements of Harmony on a collision course with the protectors of Earth?

(Cover image by the wonderful Reiduran)

Captain Rainbow Dash of the Wonderbolts.
Has a nice ring to it, doesn’t it?
Certainly her dream job.
Well, dreams and reality are two very different things.

Especially when our newly minted captain has to deal with an empty roster, budget cuts, the first non-pegasi cadets, and the pressure of finding out your best friend is now your boss, let alone a princess.

If that weren’t enough to make her quit, her three wing commanders might. Cloud Kicker is a sexual harassment lawsuit waiting to happen; Surprise makes no sense; and Lightning Dust is, well, Lightning Dust.

Meanwhile, Scootaloo arrives at the academy, ready and raring to prove she’s got what it takes to be an elite flyer. Pressure mounts as Scootaloo aims to make her hero proud.

Now on Equestria Daily
Editors: ping111
NotMurphy
Georg

Thanks for pre-reading go to:
John Perry
Distaff Pope
SolidFire
nygiants93
Eakin

Cover art used with permission by GSphere

After the Changeling invasion, Celestia and Luna make the decision to have Twilight investigate the Elements of Harmony and solve the mystery of their power.

A thousand years later, Rainbow Dash awakens in a world she does not recognize. She has no idea how or why she came to be there. She does not know the language, the geography or any of the rules of this new time. She soon finds allies in Star Fall, a scholarly pegasus whose Talent is Magic, and Astrid, Star Fall's Griffin guardian. Together they set out to discover why Dash has been sent to the future, and how she might return to when she belongs.

War threatens the nations, a Nightmare stalks the shadows, and Rainbow Dash's arrival has turned her into a wild card in a deadly game that pits the law on both sides of a broken Equestria against a mysterious criminal figure, Max Cash. Yet the stakes are higher than anyone knows, for in her research Twilight Sparkle discovered a dark secret about the Elements, something that will shake the foundations of the world.

Cover image by SierraEx
Has a TvTropes page

There is a secret in Equestria. A secret the newly crowned Princess Twilight Sparkle doesn’t dare to believe. Like puppeteers pulling on marionettes, they have influenced Equestria for better and worse since the fall of Discord. So far they have been benevolent, but their potential for evil is vast. What’s worse, she doesn’t know their name. She doesn’t know their mission. All she knows for certain is one thing.

That they all seem to be zebra.