A middle aged brony inexplicably replaces Chrysalis as a new changeling queen some decades before the fruition of a certain pony prophesy. Now the new queen must figure out how to manage a kingdom that has been in a slow, seemingly irreversible, decline for the past several thousand years.

Long ago, the Seraphim granted power to the Doom Slayer that he might conquer the forces of Hell. The Doom Slayer has won, Hell lies defeated, and now he returns to the Seraphim's holy realm. His mission is not over though, he has promises to fulfill, rewards to collect, and as always, evil to defeat. Let those who would harm this sacred land tremble, for the Guardian of Equestria, has returned!

(This story now has two sequels: Legion and the novella Doom Slayer.)

Planet 4546B, an unexplored world on the edge of explored space.

The site of a desperate attempt by the Precursor civilization to find a cure for the deadly Khaara Bacterium. A thriving ecosystem only disturbed by the presence of the plague the Precursors left behind.

However, a lone unicorn named Twilight Sparkle has been thrown into this vicious world of ocean, having lost the battle against a time-manipulating foe. She tries her best to survive on one of the few spots of dry land available in the endless oceans.

But when the Aurora is shot down, and Twilight discovers a deadly infection spreading through her and the wildlife, she discovers she has to dive deeper, delve into the last holdout of the Precursor Race.

The last holdout of a nation that seems all too familiar...

Crossover with Subnautica. Spoilers ahead.

During the battle with the changelings, a trapped Discord manages an undirected spell that reaches across universes to bring an agent of chaos to Equestria. What's brought back more than qualifies.

Steam! Gears! SCIENCE! A very confused Spark! And, eventually, really good coffee.

Here comes Agatha Heterodyne--MARE GENIUS!

The global dust storm of a century, the dying message of an indomitable robot, and a unicorn who just can’t let go of a mystery.

(Now with a dramatic reading by Skijaramaz - Tone Shift.)
(Russian translation available at ponyfiction.org.)

Something has happened and Twilight finds herself in a strange and dark new world. The Bipeds here have strange magic, advanced technology, and a lot of problems. She needs a few friends, and they just might need her. WORM crossover. Deadpan29 has created some great supplementary material that is canon to the story.

The door of the Chamber of Secrets is just ahead, and Harry Potter has no clue what kind of changes will unfold once he passes it. Monsters will become friends, friends will become monsters, and Hogwarts itself will change completely.

"Ahem." I had no clue what to say. This was the story of my life I had to introduce, and no one told me how it ends. "Well, I guess since we're all here we might as well enjoy this. It's a bit of a rocky start, I think, but there's a good bit right at the—

"I'll be honest. I have no clue if there are any good bits in it. Be my guest, though. It's not like you have to fight ancient monsters and dangerous wizards alone."

Art commissioned from the amazing Dilarus.

See This Blog for licensing.

This story is a sequel to A Certain Magical Friendship – Context_SHIFT

Nightmare Moon had been defeated.
Everypony had returned home from the world of 'A Certain Magical Index'.

But the portal is still open.

And when a certain world begins to probe a friendly world, both will have to come together to answer the question: are clones people?

This story can also be found on Spacebattles, Fanfiction.net and Archive of Our Own.

This story is a sequel to The Iron Horse: Everything's Better With Robots!

Hearth's Warming with the family is traditional! A family made up of robots? That's less traditional. Turing Test, the robot who learned all about friendship from Twilight Sparkle, decides to unite her robotic siblings and their creator for a holiday gathering in Mustangia in this collection of silly and occasionally heartwarming vignettes.

This story is a sequel to Necromancy For Foals

Twilight Sparkle and Rainbow Dash find themselves drawn by the call of the cutie map to a jungle in the middle of nowhere. Drawn further by the knowledge of an ancient temple, they are confronted with icy cold and a sense of dread.

A Necromancer was sealed away in this temple a thousand years ago.

Now, he is waking up...

((Sequel to Necromancy for Foals. Artwork by The-Minuscule-Task on Tumblr.))