This story is a sequel to Stardust

When Equestria’s newest member of royalty asks for aid to be offered to her friends from abroad, the best and the brightest volunteer to serve. Captain Steel Song of the Dusk Guard are immediately mobilized to help XCOM defend their world from the enemies that besiege them. However, their first joint operation with the humans takes a turn for the worse and they quickly find themselves fighting for their lives against the full force of the monsters that threaten Earth.

(Stardust/Dusk Guard crossover)
(Coverart provided by a friend of Viking ZX!)
(While familiarity with both stories isn’t required, it is recommended)
(Many thanks to Arzoo for pre-reading!)
(All screenshots can be found at XCOM.wikia.com)
(Featured on 3/13/2013. Thanks everyone!)
(Now has it's own section on TVTropes as part of the Stardust series!)

Lark Wolfe is 25 years old and he has a terrible fate. Bitten by a werewolf, he now spends his life traveling from town to town as a bard, trying to find a way to cure himself. Something happens, he finds himself in Equestria, and then more things happen. There is going be to a lot of music in this, as he IS a traveling violinist. I'll put hotlinks in the story to whatever he's playing. Also, Lark speaks with a very slight British accent. it's most entertaining to read if you think that way.

At her coronation after-party, Twilight gets a little freaked out at the prospect of growing into her new life, especially one specific aspect of it. She knows better than anyone that talking her problems over with a friend can help tremendously, but she doesn't have many friends with whom she'd be comfortable talking about this particular problem, let alone ones who would really understand what she's going through.

...unless she broadens her definition of "friend."

Now with a reading, courtesy of PresentPerfect! Go check it out, if you're so inclined.
Ahora en español gracias al maravilloso trabajo de SPANIARD KIWI!
(Now in Spanish thanks to the brilliant work of SPANIARD KIWI!)

[Complete] Celestia awakens to see an empty world, white sandstone stretching the horizon. She wanders the world as she builds it from her imagination, filling it with life, but as time passes, the world that she created begins to seem like little more than a lucid dream, conjured from the dust.

Name's Storm. It's my title, my alias, and my identity.

I've been fighting for centuries now. Thousands of them, in fact. Traveling from dimension to dimension, trying my best to maintain proper balance. Not too much Law, not too much Chaos. Not too much Good, not too much Evil. At the same time, I am different. I have something that's unimaginable. Something that strikes inspiration in allies, fear in enemies, and horror in Gods themselves. A piece of interstellar technology I so aptly named the 'Universal Editor', a device that enables me to 'edit' the Strands of Existence, which then allows me nearly impossible feats.

After a close-encounter and failure to perform my self-imposed duty, I escape with only a flesh wound (or seven). Only to fall right into a realm packed with mythological beings, heavy emphasis on peaceful environments, and colorful technologically-inept equines that constantly try to become closer to me. Let's see how far my remaining sanity will plummet after this...

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Rated Teen (Good amount of swearing, minor descriptive gore, and plenty of violence)
Story began: January 26th, 2012 (Posted on the 27th)
Editors: ShadowHorizons (Editor-In-Chief), SovietBacon
Cover Art (using Photoshop) made by: SovietBacon (artist of original picture [found thanks to EdwardJ] is this guy.)

Fluttershy and Twilight go in the forest to search for Angel when he disappears. Trying to get back to the cottage as fast as possible, the two find Angel, and two other strange creatures. Perhaps these strange creatures are tied to the item that Fluttershy found in the forest on her morning routine, or maybe just a new species awaiting to be cataloged.

Zelda crossover. Both titles belong to their respective owners.

First of the Savage Skies series.
After running afoul of timberwolves in the Everfree Forest, Fluttershy is saved by a mysterious young colt with a most unusual and disturbing feature. Realizing that he is alone, without anyone else to care for him, Fluttershy realizes that she must try to bring this lonely foal out of the forest and give him a life of love and friendship. The problem is that this colt's...unique qualities have made him more than a few enemies, including some who are closer to home than Fluttershy realizes.

Now with a sequel: The Promise of a New Day.
Now with a TV Tropes page.

A crossover story between My Little Marriage and Project: Sunflower. The story takes place after Chapter 30 of Project: Sunflower and before Chapter 22 of My Little Marriage. Contains minimal spoilers for both stories. Co-written by Merlos the Mad and Hoopy McGee.
~~
Two completely different worlds, two very different women:

Mary Morris is an ordinary wife and mother who woke up as a pony one strange day. Since then, she's been struggling to retain her sanity and deal with her new body, all while hoping to find a way to change back.

Erin Olsen is part of a project to investigate the newly discovered world of Equestria. Using advanced nanotechnology, she was turned into a pony in order to better fit in with the local population.

After a test of new world-traveling technology goes wrong, these two meet up and have sandwiches.
~~
This story is a collaboration between Hoopy McGee and Merlos the Mad.
Pre-reading, editing and general suggestions given by Ludicrous Lycan and Firebirdbtops
Original art by Conicer and modified (text and Santa hats added) by Merlos the Mad.

You'd think that being trapped in stone would mean that, if nothing else, I could get some peace and quiet. Unfortunately, it seems that Celestia has other ideas.

She has appointed these ponies... these 'Keepers', as she calls them, to keep me entertained during my incarceration.

Honestly? I'd prefer the boredom.

Cover art by matrosha123
Spanish Translation by SPANIARD KIWI found here

One beautiful morning, Twilight Sparkle decides she wants a free salad. After a small amount of theft, assault, battery, and arson, she sits down to enjoy what is sure to be the best tasting salad ever.

...Or she would have, if it weren’t for the Equestrian Intelligence Service locking her up as a potential threat to national security. Now, Twilight must escape a maximum security holding facility hidden deep underneath Canterlot. And to do it, she’ll need a paperclip, a spymare catsuit, an escape plan, and an alliance with the dastardly Drakbog, King of Frogs.