There’s no end to the monsters that lurk in the dark.

Ghosts, werewolves, mad scientists, cultists, mutants, zombies, vampires, aliens and more lie in wait in the dark corners of Equestria, terrorizing the night. But the most infamous and dangerous of them all is the legendary witch Twilight Sparkle, with a five hundred million bit bounty on her head.

Seeking fame and fortune, Rainbow Dash sets out to defeat the legendary witch and collect the massive reward. The one thing she wasn't counting on was Twilight being less evil than she expected.

More stories set in this AU can be found here.

Cover art is a work in progress by Abode_WTF

A dalek appears in Equestria - not just any dalek, but the one that had been corrupted by Rose Tyler's DNA. It has a choice of life as a pony, or dying, and finds that it cannot bear to die a second time. Thus begins a strange adventure as the dalek tries to find a place for itself in a world that is completely antithetical to its former existence and way of thinking...

...and why does that earth pony stallion look familiar...?

Seath the Scaleless, White Dragon God of Verdite, Traitor to the Everlasting Dragons, Duke of Anor Londo, Grandfather of Sorcery, and now the new friend and mentor to Twilight Sparkle? What will happen when two like-minded souls from opposite ends of the morality spectrum match wits? And what will remain in their wake?

A somewhat more meta twist on a MLP/Dark Souls cross-over, inspired predominantly by a few pictures I found of Seath and Twilight together, and my bewildered discovery that for all of the stories on this site that cover these two franchises, there's only one that focuses on Seath the Scaleless and so far it hasn't seen any updates in over a year ( http://www.fimfiction.net/story/68621/scales for those curious).

For those who haven't played either the King's Field or Dark Souls games worry not. I'll do my best to either explain the lore of both in the story itself, or add an author's notes for anything that gets referenced.

UPDATE: New custom cover art at last! Courtesy of Cryophase ( http://cryophase.deviantart.com/ )

Editing is courtesy of lunarstallion

Legends tell of the lost land of Equestria, once the home of all ponies. It is said that the Fire of Friendship was born there, and that the land was ruled over by four beings with brilliant souls and powerful magic. Gone are the glory days now. In this ruined world there are only mindless undead, ravenous changelings, and prowling, demonic beasts. The bonfires that keep the peace in the lands beyond Equestria are failing, and as the Fire fades, so too does the strength of nations.

Yet, perhaps there may still be hope. Perhaps, somewhere in the heart of that forsaken kingdom, there may still be a way to break this curse.

A Dark Souls crossover. Expect pain and misery.

Part of the Borderworld.

North of bountiful Equestria and beyond the Crystal Empire lies an icy land of cryptic mystery. Its inner reaches have never been explored, but a Canterlot University expedition is set to change this. The plan is simple: penetrate the unknown depths of the Uncharted North and discover its most hidden secrets.

It's a noble undertaking, but a dark cloud looms on the horizon. Princess Luna's dreams have revealed a great but shadowy threat. To minimise the danger, Princess Celestia requests that her most loyal student, Twilight Sparkle, join the expedition and keep everypony safe. With the aid of her number one assistant, Spike, and mailmare Derpy Hooves, Twilight will attempt to do exactly that.

Cthulhu Mythos crossover, inspired by At the Mountains of Madness by H. P. Lovecraft.

Wanted: Porter, assistant, jack-of-all-trades, minion. Applicants should be strong, loyal, pain tolerant, cold tolerant, unambitious. Must be capable of following simple instructions. Ideal applicant should be of low to average intelligence and mildly deformed, but exceptions will be made for extraordinary candidates, with extraordinariness to be determined by employer. Must be willing to begin work immediately.

Remuneration will be in the form of room, board, and insight into the true nature of the cosmos. Extremely generous bonuses up to and including subcontinents may be awarded if merited and if circumstances permit. Interviews for the position to be conducted at 108 Haybale lane at 10:00 AM sharp on 4/7. Applicants are expected to be punctual.

—The Dark Lord Sassaflash

Editing and indispensable writer-prodding by The Masked Ferret

Beneath the blistering blizzard and the freezing frost that swallowed the world, a group of ponies cling desperately to existence. They are the last of ponykind, and the future of their species, if one even remains, rests solely on their shoulders. Hidden in a crater from the worst of the wind, Rarity and the other ponies who managed to find shelter struggle to eke out an existence in a life governed by one rule, and one rule only:

The City Must Survive.

Cover art by Ruirik.
Editing by Solidfire.
Inspired by the wonderful game of Frostpunk.

In the magical land of Equestria, two alicorn sisters raise the Sun and the Moon every day to give the world a night and day cycle, basic for the survival of life. There are also two alicorns who rule over two very core aspects of life and harmony itself. Those are Love and Friendship. While not as ancient as the two sisters, all princesses are essential to the world's balance.
This balance is also sustained by the hard-working ponies, who make the seasons change and manage the weather to fit their needs, so everypony has enough food and water, and every animal is also attended to assure that any of them are caught in the changes of seasons.

But what about the planet itself? What about Mother Nature?
This is the question that Gaia asks when she arrives to this foreign world. After so much work her son persuaded her to take a long vacation in Equestria, saying that she needed one and assuring her that he would be in charge now, and she must take a break. But what can a several billion-year old alicorn possibly do to pass her time in this land?

(SimEarth/MLP Crossover)
(Timelife of Gaia's life 'till the start of the story)

Traveling between parallel universes is impossible, especially during the process of regeneration, but the Tenth Doctor doesn't have time to question the facts. He's just been thrust through a tear in the fabric of reality, gotten a new body, and landed on a planet called Equestria. Specifically, he's landed in the worst possible place in all Equestria – somewhere that's ready to unleash a “big ol' storm of chaos”.

That's just the beginning of the Doctor's strange new lease on life: there's a whole host of mysteries to explore. Who is Derpy Hooves, the gray pegasus who understands more about him than even she knows how to explain? How does Princess Celestia already know him? And what's the truth behind the Order?

Above all, the Doctor needs to discover if this new universe can heal the wounds he suffered in the last. Only one thing is certain: there's an awful lot of running left to do.

(Warning: For those of you who haven't watched up to the Doctor Who episode 'The End of Time'... spoilers. Also, this story begins between Seasons 2 and 3 of FiM, and things start to... diverge from there.)

Side stories can be found at The Merely Mundane Tales (of a Mad-Pony in a Box).

After GLaDOS is uploaded into a potato battery, Wheatley humiliates the AI even further by uploading her into a project that was abandoned by Aperture a long time ago. In the blink of an eye, she finds herself in a deformed body of flesh and bone that resembles an equine, and is just as powerless as one too. It comes with all of its needs and bodily functions as well. To make matters worse, she's trapped in a land full of insufferable creatures that just want to make 'friends.' Will GLaDOS' cold, sadistic sense of humor and morals get the better of the ponies? Or will they peel away the once artificial being's metallic shell and find that there's a softer side? Probably not, but it's worth a try.

Story Theme: Tyler Bates - I Love You (Watchmen OST)

Thanks to Meeester, MrJoshy, and funkyferret for proofreading/reviewing.

Cover by Fedte16.