An MLP/Warhammer 40K Crossover

The Iron Warriors 38th Company has landed in Equestria, entrenching themselves like a barbed hook. They hunt the aliens of the Tau Empire, intent on destruction and pillage.
A small squad is dispatched on a reconnaissance mission, only to find that there is intelligent life on this world besides the feuding space-farers.
Will these improbably adorable and friendly equine aliens turn the damned warriors of Chaos from their blood-soaked path, cleansing them of their dark legacy with the magic of friendship and harmony?

No.
No, that isn't happening.
EXPLOSIONS!!

(Dark humor warning; limited grimdark themes)
(Cover art by Nicholas Kay)
(This series now has its own TVtropes page!)
(This story is a contestant in the Tournament of Canterlot, a charity event to raise money for Syrian refugees! Go here for details and donations!)
(Featured on Equestria Daily 8/20/15 )

When Dialga and Palkia start to attack one another in Alamos Town, a Ponyta named Flare Blitz is caught in the crossfire. After falling into the dimensional rift, he finds himself in a strange new land filled with brightly coloured ponies. Flare doesn't know how he got here or if he can even get back home...

The question is, will he even want to go home?

Edit: So I finally got offa mah flank and started the re-write. I want to give massive props to Blazinblade7 for editing as well as my little bro, who is teaching me a great deal of authory stuff.

You can find the TV Tropes page here!

Now with TVTropes page! Show it some love: TVTropes

At last, the second season of your favorite wind mage's adventures in Equestria is here!

Just as Vaati has fully settled down into his new life in Equestria, the unthinkable happens; Ganon appears and declares his intent to conquer. Now, with the Princesses forced into hiding, the Elements of Harmony scattered all across the land, and races all around Equestria suffering under Ganon's harsh rule, it is now up to Vaati, Twilight, and their friends to join forces with unexpected allies, recover the Elements, and take the fight to Ganon. And all the while, an even greater evil plots from the shadows, enacting a scheme centuries in the making that shall soon encompass two worlds that do not yet know the connection they share...

And as the adventure gets underway, one by one, the Mane Six begin to have nightmares...

Meanwhile, the Cutie Mark Crusaders must combat the darkest depths of madness and twisted illusions if they want to save Scootaloo from falling victim to the evil power that weaves the strings of all their fates...

Rated T for action violence, minor language, mildly suggestive themes, and some scary/disturbing images.

It is the year 2038, and the Earth is slowly being consumed by a space-borne monstrosity dubbed the Black Tide, which is using nanotechnology to remake the planet into something hideously alien.

Erin Olsen works for Project Harmonics, humanity's last-ditch effort to find a new world before the Tide can wipe them out. But when that world is found, and it turns out to be occupied, Erin will need to find the courage to face the unknown in order to save the inhabitants of both worlds.

(Many thanks to Easteu for the fantastic cover image for this story!)

Now with its own TV Tropes page

There is now a follow-up to this story: Sunflower - Side Projects
Sequel: Project Sunflower: Harmony

Book 1: In 2095 A.D., the US launched the first Colony Ship, headed for Centaurus: a planet in Alpha Centauri's habitable zone. The ultimate space race had been won. 40,000 Americans would arrive in ten years and found the first human colony outside our system, all for America. But in 2100, the ship vanished. The "Lost Colony" was never found.

6000 years later, the colonists found a way home from the system the accident sent them to: one of four human nations forged from the survivors of the crash had opened the EarthGate, giving them control over contact with Earth, which they visited immediately, only to find something had beaten them to the cradle of humanity and had wiped all traces of humanity from its surface,

(The Saga now has it's own group! You can find it here! The forums has information on the details of the Alternate Universe, and anyone can join. You can only contribute if you're ranked higher than user, though.

A crossover between Sid Meier's Civilization II: Test of Time's Scifi mode (it's a really awesome experience for those of you who haven't played it. Plus, Scifi mode is already a crossover between Civ and Master of Orion!) and The Conversion Bureau! Earth fell to ponification in 8080 A.D., only twenty years before the Lost Colony opened the gateway home. This was going to be a single fic, but due to a suggestion from Safhell, who preread the chapters I have at the time of posting this, it's being split into a saga! This first story is the introduction, and from there, the story will split into multiple paths following different characters and situations during the ensuing conflict until a conclusion fic is added to end the saga with the grand finale! (If you guys don't like the idea of it being a saga instead of a standalone, let me know, and if enough of you are against the saga idea, I'll just merge them all into this fic).

Please leave constructive criticism for anything I could do better, for I know this fic is far from perfect. Just remember that a lot of things use the mindset present in all Sid Meier's Civilization games, so logic is a bit skewed at times when compared to how things work in the real world (such as the colony ship being all citizens of the nation that launched it and not multinational. It's just how Sid designed the games).

You know all those stories about cos-players disappearing? Well this is kinda like those. Jason Hughes was just a normal guy attending a con for the first time. Of course he had to buy that omnitrix replica right? Well now he's stuck in a world of talking ponies and has to learn what it means to be a pony.

**This somehow got on the popular stories list on 8/16/14, which is only a day after I published it. Thats a new one*

**So this got featured on 8/17/14 I have no idea how that happened but thanks everyone!**

Big thanks to m2pt5 for taking on the role of proofreader/editor. Also want to thank DuskShadowBrony for being my other editor.

When a human from Earth, by an unknown set of circumstances, ends up in a world upon a separate path of history and evolution, not only must he survive the different species that call it home, but the change in which his species, humans, are seen and treated.

But as he moves day by day, he will find he will play a role in the future of the world of Equestria, one that will determine the fate of both ponies and humans.

((Inspired by MadMaxtheBlack))

A strange artifact arrives at Twilight's library and turns her into a dragon. From there, everypony she touches suffers a similar fate and the contagion begins to spread! Twilight and her friends struggle to avoid spreading it further in this comedic misadventure of dragons and the fiery spells they weave. Can Twilight find a cure?

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!)

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!)