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!)

Four authors, eight characters, one labyrinth and a lot of violence. Oh this was a bad idea. How was alcohol not involved?

Four (in)famous Wastelanders find themselves unwillingly pulled into a place controlled by the mad goddess Katastrofis. Along for the ride are four ponies, each with a connection to one of the Wastelanders. Their task is simple: survival. But with the terrors of the labyrinth and the fickle nature of its mistress standing in their way, do they have any real hope?

STARRING:
Thomas and Luna (tony1685)
Ethan and Twilight (ed2481)
Scarlet and Celestia (Omega_code)
Aeron and Rainbow Dash (Shadowflash)
Events are non-canon to their home universes, though events mentioned may not be.

This is a collaborative piece, so give those guys some loving too. They're all great guys.

An endless abyss of sand in every direction. Among the sands, a lone unicorn draped in purple robes canters towards a mysterious light in the distance...the Journey begins.

This is a cross between thatgamecompany's Journey and MLP:FiM. There will be differences between this and the storyline of Journey, as well as differences between this and the game mechanics of Journey.

Princess Celestia sends Twilight to a human school to learn how to be more human in case another incident happened... but what Twilight finds is that Yokai Academy is nothing like the human world she went to before. Will Twilight be able to return to Equestria in one piece, or will she be overtaken by the monsters at Yokai Academy first?

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I recommend going onto Wikipedia for those of you who have never seen the Anime series Rosario+Vampire. It'll help give you a better understanding of the characters

In 2185, during his campaign against the Collectors, Commander Shepard discovered a previously unknown species whose origins predated any other race in the modern galaxy. Following a daring rescue from their ancient sanctuary, the Equestrian Herd was brought back into the galaxy where, for the first time in eons, they must walk their own path.

Knowing full well the terrible threat that lingers on the edge of the galaxy, the leader of this newly freed race fights to secure her people’s future while attempting to prepare for the storm on the horizon.

This is her story.
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The long awaited Sequel to Mass Effect 2: The Equestrian Equation This is a reader directed story. Your choices will shape events.
If you favorite, also like! It's one little button click that makes all the difference.

Also, this series has its own TVTropes page now! (Special thanks to user CrowMagnon for setting it up).

This story is a sequel to Stardust

Twilight has finally returned home from the harrowing challenge that Discord set upon her, and the residents of Ponyville and the Elements especially look forward to having their dear friend returned to them.

Twilight, however, has changed. Still suffering from her injuries, almost incapable of using magic and haunted by the memories of her time on Earth, she becomes increasingly withdrawn from those who were closest to her. Will her frustration at her current state and her friends inability to understand her experiences cost her what she valued most before Discord's bet?

(Sequel to Stardust, familiarity with this is recommended!)
(Proofread by Arzoo!)
(Coverart commission drawn by the amazing KairaAnix!)
(Crossover with XCOM: Enemy Within, though the crossover and human elements are minimal)
(Featured 4/28/2014, thanks folks!)

This story is a sequel to Stardust

Times are changing for Equestria as Twilight’s return brings with it news of people and cultures from beyond the peaceful world everypony knows. Aid and volunteers are freely offered to help the besieged humans of Earth because every Equestrian knows that’s what good friends do. Unfortunately, making friends can also have the unintended consequence of making enemies.

When the monsters besieging the humans strike at Equestria with a level of brutality not seen in over a thousand years, the cry for help is sent to all the kingdoms of the world. Honored allies step forth to fulfill ancient treaties and oaths. Enemies, old and new, bury their grievances. An alliance never before seen in Equestria will be created to combat the monsters from the void.

And because of these events, a grim but welcome sibling to the XCOM project is born.

(XCOM/FiM Crossover)
(Sequel to Stardust, which I recommend reading before starting this. Fortitude Amicitia and Broken aren't required reading but are supplemental to the storyline)
(Gore tag for blood and violence)
(Alternate Universe tag because of the divergence from canon that Stardust has caused)
(Uses elements of Season 4)
(Coverart produced by the amazing Carnelian!)
(Many thanks to Arzoo, BradTheBrony, Vandenbz and Setokaiva for prereading!)
(As of 03/07/2016, the prereading team consists of Arzoo, BradTheBrony, Noble Cause and Metallusionsismagic!)
(Complete with it's own TVTropes page as part of the Stardust continuity. Could use some updating!)
(Character tags will be added as chapters are added!)
(Featured 5/12/2014! Thanks folks!)
(Possible spoilers in the comments! BEWARE!)

A cartoon pony named Twilight Sparkle visits me every other Friday night. Normally she just raids my fridge, questions my life choices, and forces me to watch her show. Tonight something is different. Has she always had wings?

Fair warning: Twilight’s views on her own fandom's creations aren’t exactly positive.

Cover art generously provided by statoose
Reading by CaptainBron3y
Reading by NovekBrony
Reading by Natetrix
Chinese Translation by Comradash
This story is approved by Luna's Fanfiction Library

The story continues in the sequel

Equestria is dead. The sun and moon have stopped, and the planet is in ruins. The xenos that built the civilization are gone, their works in ruins. Investigating the planet, Interrogator Kylara makes a surprising discovery, one that might hold the key to what happened to this once-fair land - and what might be done to stop it. A Warhammer 40k crossover.

Now featured on Canterlot's Finest and Equestria Daily

Also now featured on TV Tropes.

This story is a sequel to Friday Night Twilight

A cartoon pony named Twilight Sparkle visits me every other Friday night. We talk more than we used to, but she still makes me watch that show of hers. Isn’t anything ever going to change?

Chinese Translation by ComradeSpark

Note: that Romance tag doesn't equate to mushy stuff, and it's not the reason for the Teen rating. This is much closer to Everyone than Mature.
Cover art generously provided once again by statoose
Big, heartfelt thanks to Skeeter The Lurker for helping me deal with reader reactions, and to Craine for proofreading the new final chapter.