In Equestria, humans serve the ruling pony class. Their lack of magic makes it near impossible to survive on their own, and so they depend on their rulers to protect and help them, and put a roof over their heads. But on Earth, and in many other solar systems, their strength is the pinnacle of hope, as they assist those they can in their frantic search for the ones who came before.

Near the edge of the humans' empire, The USSF Monarch stumbles upon Pony kind on Tango 126, one of the many targets during their hunt for the Precursors. Their curiosity is peaked, and John Punch, a high ranking Elite, is sent in disguised as one of the many Human occupants on the planet, to learn of their culture, and the Precursors' presence on this planet.

Now the respected veteran must face the social challenges of being thrust into a gender reversed, pony dominated society.

During a playful conversation two friends accidentally open a portal to a different world and are forced through. They find themselves in Equestria and as ponies which in and of itself isn't terrible, but it turns much worse when they realize that they are children as well. Now they have to figure out a way to outsmart Equestria's Social Services, get along at school, earn a living, and keep up their cover as an independent set of brothers; all while trying to figure out how to get back to Earth or at least make themselves their proper ages again. Puberty sucked enough the first time around.

6/6/2014 Just hit the first time this story has been in the featured box. Thanks everyone for reading and supporting.

When a drowning Twilight Sparkle is pulled from the ocean by a group of salvagers, she receives news that changes her life: she is now two-thousand years into the future, and Equestria no longer exists. Instead, there is the kingdom of Centuria, ruled over by the seemingly immortal tyrant, King Ganymede.

In this new world, unicorns are a rare sight and advanced technology is shunned by the general public. Twilight finds allies in Kevrana, a salvager with a heart of gold, and Hadran, Kevrana's suspicious and cynical brother. As a war brews in the land, Twilight, with only her new friends and legends of a strange place called the Vale to guide her, must set out to unravel the mystery of how she came to be in the future, and whether or not she can ever return to her own time.

Edited by Eldorado, Toothless the Night Fury, and Comrade Sparkle.

Image by SugarYoshi

Isolated from her friends and taken prisoner in the middle of a war, Twilight must deal with the very real dangers of being percieved as an enemy as well as the nightmares of her arrival on 'Earth'. Can she overcome her own fears and the fears of her captors? Will the wayward unicorn's assistance be a boon or a curse to the 'humans?' Most importantly, will she ever find her way home?

"In short, it's a story of friendship and plasma rifles, with the emphasis on the friendship. The characters are well written, the XCOM setting is fleshed out very well, and the story is compelling. If you love XCOM, you'll love the story, but even if you've never heard of it, it's more than worth giving the first 3 chapters a read.

There's excellent action later on, but the real strength lies in the collision between the friendly and naive world of Twilight Sparkle and the desperate world of humans fighting a losing war for survival and willing to do anything to turn the tide."

--Arzoo

(XCOM/FiM crossover)
(Cover art commissioned by a friend and created by the magnificent FoxInShadow!)
(Original cover art by the amazing Carnelian can be viewed here!)
(Gore tag for blood and some violence)
(Many thanks to the studius OminousTen, Arzoo, xXFluttershyForeverXx and finally Setokaiva for giving my rambles a once-over)
(Now with it's own TV Tropes page! Get to tropin' folks!)

Imagine a world (or a crackfic) where everything you know of the ponies is true. Now imagine the ponies living in the universe of Mass effect where magic is just another name for biotics.

The Reapers are coming, but they have never faced anything like the Ponies.

A former state alchemist looking to undo the past may have inadvertently lost his future when he come in possession of what he thinks is a chimera. Warning: OC-centric

Twilight Sparkle had made several spells to send her and away to short locations. But a sonic rainboom makes her magic jump to the point in which she and the rest of her friends are sent to another world. They wake up in a dark room and soon realize that they aren't in Equestria anymore. With a statue that only moves when nopony is look, an old man that can move through wall, and a humanoid creature that can't look at you or else it will kill you, and many more things are loose in the facility. They need to work with three guards, two mobile task forces, and two D-class personnel to escape the horrid night mare of the SCP facility.

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?

Eighty years after the events of The Dread Chitin, Equestria is a radically different place. The arcane science of the late Duran Thirk and the information found on the Star League library core have combined to catapult the nation's science ahead by hundreds of years.

Now, facing the possible aggression of a completely unknown alien power, Twilight Sparkle and her friends have to gather together once more, leading a crew of the best ponies they could assemble in a voyage outside their own star system. They seek to learn about their potential foe, to explore the galaxy around them, and possibly find allies and friends to stand alongside them. Who knows what they will actually find?

Bon Bon's voice is funny, and that's about all that anypony who meets her notices, as her marefriend Lyra soon steals the spotlight with her explosive personality, strange obsessions, and curious beliefs. And why not? Bon Bon is, after all, a perfectly ordinary, boring pony in every way but two: her voice, and the carefully kept secret that she isn't really a pony.

(Edit:) Now with an annotated version, courtesy of the incomparable Shoggoth Lord!