Pandinus Imperator (You can call him Pan, he won't mind) is knocked back in time during the Canterlot Invasion, and accidentally kills King Sombra on arrival. Instead of being executed, the changeling is surprised to find himself being hailed as a hero, and is promptly put on the throne as the new monarch, the Crystal Emperor. However, Pan now faces a great many problems, among them Celestia and Luna, who seem certain that the changeling is secretly up to no good, as well as several political factions secretly plotting to undermine his reign. There's also the tiny problem of the constant snowstorm that threatens to cut the city off from the outside world permanently.
The Crystal Ponies need a hero now more than ever before. Why did they get a changeling instead?

We Has A TvTropes.

While not truly a part of Bucking Nonsense's Changeling-Verse, the same rules regarding changeling abilities and society apply.

Cover image provided by gabapple, used with permission.

While on a trip to Canterlot to do some research, Twilight happens upon a dust-covered book titled Insane Edicts: A Legal History of Equestria. Sure, the book seem innocuous enough, but when she opens it up she discovers that Celestia is far more eccentric than she'd like to believe.

It hurts when the one you love doesn't return your affections. But Daisy has always believed that giving up is for the weak, and she's not weak. Twilight will either love her, or be annoyed by her until she does.

[Takes place very early on in season one, before Twilight knew Daisy's name as seen in the episode where they meet Zecora.]

When Rainbow Dash receives a package from her grandfather, she discovers an artifact of immense power and potential. An artifact that holds dominion over the very destiny of each and every pony's threads of fate. In the wrong hooves, it could be dangerous, catastrophic even.

Naturally, she abuses it.

Edited by Garnot, Between Lines, Cooopercrisp, Seether00, Don't Look At My Name Bro, and MerlosTheMad.

Preread by Skeeter The Lurker.

When evil cultists are out kidnapping innocent ponies to summon their dark god, it's up to Princess Celestia and Twilight Sparkle to stop them! Armed with guns, sharp pointy things, magic up the wazoo, and plenty of ammo, the two are ready to kick some flank and chew bubblegum!

And guess who just ran out of bubblegum?

Collaboration with the great and quite handsome alexmagnet, who you all should go check out and stuff.

Equestria has made the discovery of the century. They found what they believed to be the last of the mythical race of the humans trapped inside of a large crystal. Curiosity takes hold and with the help of Twilight Sparkle and the elements of harmony they decide to set it free. But was that a wise decision?

Cover art not done by me.

For six months, Bruce Wayne has been stranded in Equestria. And for six months, he has desired only one thing: to return to Gotham City.

But Bruce Wayne's journey to Equestria was no act of chance. He soon finds that he was brought to Equestria for a reason, by something as dark and twisted as the minds of Arkham's most notorious inmates. With only Princess Luna to aid him, Batman will have to face a darkness beyond any he's fought before.

A thief.

I guess that's what I've always been. I've spent my life plundering ruins, seeking out the relics of ancient times, dodging traps and outsmarting incompetent villains... and collecting the hefty finders fee, to boot. It's been a great ride, wouldn't trade it for the world. But I'm not the young filly I used to be. Maybe it's time I hang up the helmet. Maybe.

But not without one last job. I've got a lead on the greatest find in history: The fabled Crown of Harmony, worn by the Pony Queen before she vanished, eons ago. Somepony doesn't want it to be found, though.

Somepony who knows why.

Seriously, a lot.

(Now with a Spanish translation by the generous SPANIARD KIWI!)

In this behind-the-scenes explanation of the Mare in the Moon incident, follow Nightmare Moon and Princess Luna as they encounter strange, artificial beings from another world. A Portal 2 crossover. Contains two stories:

Of Cores and the Alicorn: After what seems like an eternity, Wheatley and Nightmare Moon cross paths and discuss their respective exile in space.

Guerrilla Corefare: Nightmare Moon is free, but the magical accident that released her did more than just send her back to Equestria. Now, from behind the scenes, Luna exploits Nightmare's newfound weakness in order to sabotage the plans for eternal night.

Note: As older stories (in fact, written before the debut of Season 2), these are fairly amateurish, relatively speaking, and contain speculative-at-the-time characterization for Luna. With the exception of a few minor edits, however, they have been submitted in their original forms for posterity's sake. This isn't Airstrip One, after all, and I don't work for the Party.