Equestria and the Crystal Empire have fallen to the Changeling Hegemony, led by the brutal Queen Chrysalis at the head of a mechanized horde of guns and tanks. Princess Cadance stayed in the Crystal Empire; Princess Twilight stayed in Equestria. Chrysalis rules the continent, only defied by Nova Griffonia, the poor Griffon colony in the north.

Across the ocean, the Griffonian Reich pledges to reclaim its lost territory, sundered by revolution a generation ago. While the Alicorn Sisters retreat to New Mareland, Princess Flurry Heart and Shining Armor turn to Aquileia, the Republic born out of the ashes of the Griffonian Reich. The Kaiser of the Reich is only a child, subject to a regent bent on war and conquest.

Flurry knows the Reich and Chrysalis have worked together.

She knows that war is coming to Aquileia.

She knows that Celestia and Luna abandoned her mother and Twilight Sparkle.

She knows that the world is on fire, and she is the last true Princess of Ponies.

She knows she will go home.

Cover Art by Opal Radiance, commissioned by Sunstreaker.
https://www.deviantart.com/opalradiance

Early one morning, Twilight Sparkle gets up to make some tea.

Sometimes, a cup of tea is just a cup of tea. This is not one of those times.

This story is a sequel to A Stitch in Time

Having discovered the message left for her by Star Swirl the Bearded in the distant past, Twilight once again finds herself caught up in the middle of a struggle against forces far greater than herself. In order to even stand a chance she'll need to travel further and wider than she ever has, and forge some unlikely alliances with old enemies. All to bring down the powers that have manipulated and shaped her entire life, and retake control of her own future.

The conclusion of the Time Loop Trilogy, which began with Hard Reset
Available in Spanish thanks to dgs1993
Series TV Tropes page

This story is a sequel to A Process of Elimination

Twilight Sparkle had a secret.

It was a secret that plagued her for years. It was a secret that isolated her. It was a secret that brought her pain, misery, and joy all at once.

It was a secret that gained her the best and only real friend she had ever known.

It was a secret that caused her downfall.

A normal end to a normal day -- at least, that's what it was supposed to be.

But it wasn't.

Luna went to raise the moon as usual, but something went wrong. Terribly wrong. She felt it, but she couldn't stop it.

None of us could.

It appeared too suddenly -- acted too quickly.

The only warning we received was a roar and a bright flash of light, then everything was gone. No more Canterlot, no more ponies, no more anything.

Nothing survived.

Nothing... except for us and whatever 'it' is.

We may be immortal beings, but that doesn't make things any better -- if anything, it makes the pain all that much worse. The only thing we can really do now is try to avenge those dear to us. Our subjects... our families... my friends...

Everything.

I don't care how long it takes, and I don't care if it's a pointless battle. All I care about now is making sure we put that thing down for good.

After that?

Well...

Cover art done by Little Tigress. Check out her other stuff on deviantart if you wanna see more!

It shouldn't have been a big deal. Celestia was kidnapped or knocked out or just generally made to seem powerless by whatever idiot with ill intent decided to show up on a nearly weekly basis. As the mighty and immortal Sun Princess, she could escape at any time, but she was happy to play these little games. The daring rescues and bloodless battles gave her ponies such a sense of confidence and purpose!
But this one didn't go as planned. One small, stupid mistake got her thrown to the twisted reaches of the world-prison, Tartarus. Now alone, unarmed, and barely more than mortal, Celestia wakes in a living landscape where everything has every reason to hate her.
And, far worse, she has accidentally picked up a passenger.

Sidenote: This a repost (I tried to go through official channels, I promise!) of a story I wrote long, long ago on an account I foolishly deleted. Back in those days, Tartarus hadn't shown up in an actual episode yet. It's not exactly an alternate universe situation, but it has nothing to do with the canon portrayal of the place.

Super amazing cover art by Cold In Gardez.

Somepony is sabotaging Moondancer's research project.

Twilight Sparkle suspects Starlight Glimmer may be responsible. She enlists the Canterlot Royal Guard to protect Moondancer, and offers to help with her research.

Soon, however, the two ponies discover an unexpected side effect of Moondancer's research: one with dangerous consequences for all of Equestria—and possibly even their friendship.

Inspired by The Writeoff Association's "Out of Time" contest.

It's only been a few moons since Spike moved to Ponyville, and the settled zone hasn't quite gotten used to having a dragon around, any more than his sister has become accustomed to managing all the duties of a small town library. So while she sorts out late fee notices, he's expected to work the front desk and speak to patrons. Ponies who don't know how to talk to him. Ponies who seem to be having a hard time even looking at him. So when Twilight finally sends him to collect a book from a truly unresponsive patron, it's almost a relief.

Except that the pony isn't there. Will never be there again.

And just about nopony seems to care if she was ever there at all.

(A stand-alone, no prior-reading-necessary part of the Triptych Continuum, which has its own TVTropes page and FIMFiction group: new members and trope edits are welcome. )

Now with author Patreon and Ko-Fi pages.

This story is a sequel to Unnoticed

Do you know the mare? So many believe they do. A single glance is more than sufficient to teach them everything. And given that they now know everything, there's clearly no need to make any further inquiries. She is what they've decided her to be. No more, and it would take quite a bit of effort to create any degree of 'less'.

Do you know the pegasus? The mailmare, the single mother, the incompetent, the town's lowest-flying joke? Is that what you've told yourself?

Do you know her?
You don't.

(Part of the Triptych Continuum, which has its own TVTropes page and FIMFiction group. New members and trope edits welcome.)

Now with author Patreon and Ko-Fi pages.

While this story is tagged as a sequel, it's just following up on her previous appearance there: no knowledge of that piece is required.

A flip of a coin. A twist of fate.

Twilight Sparkle, younger sister of Princess Celestia's personal student, Shining Armor, grew up listening to her brother's bygone dreams of joining the elite of the elite: The Royal Guard.

Now, fresh out of the Academy, this young mare is ready to prove herself equal to the deeds of the great soldiers she read about as a filly. Too bad the princess she ends up protecting isn't Celestia.