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!)

Twilight does some research into her tried and true teleportation spell.

After ascending to Princesshood, Twilight decides that it's time to really take the notion of "A Sound Mind in a Sound Body" to heart. She has the "Sound Mind" bit down (mostly), but years of sitting inside hunched over a book has given her quite a bit of ground to make up on the "Sound Body" front.

Fortunately, she has an athletic friend to help her out.

It all started with a simple question: What if? What if Luna had ponies who noticed the beautiful nights she created. Would she have turned into Nightmare Moon? Would she and Celestia rule together for a thousand years? Would Twilight meet the rest of the bearers of the elements and become friends with them? Now, with the help of a new magic spell that she created, Twilight is going to find out!

Welcome to the Lunar Republic!

Featured 4/9/15

Update: The story is edited into a proper read without many of the horrors I originally put into it. Enjoy the ride!

Deciding he could be given another chance, Luna and Celestia come to an agreement to release the Chaotic God from his rocky imprisonment, locking his powers with a powerful spell. Magicless and with a chance at redemption, Discord's ways seem less chaotic than ever.

He does cause a lot of chaos though, to the faithful student of Celestia, who had eagerly taken over the task of watching over and teaching Discord by giving him a home under her own roof, in the process hoping to learn more about his species, powers and motives but surprisingly learning much more about both himself and her head... Which puts her in pretty amusing situations most of the time.

An adventure of a silly one sided (???) love and a look into the heart of Twilight Sparkle.

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.

Some accidents are small, and some endow you with the power of a godly ruler. On the opposite end of things, you lose your wings along with your ability to move celestial bodies, and you can't tell anypony. Why, because what would they think if the princess became a librarian? It's going to be "fine". Celestia just needs to switch back with Twilight before either of their true identities are revealed. All Twilight has to do is hold down the castle, fight off scheming villains, run the country, and worst of all... deal with all the noble ponies.

Rated teen for shenanigans and some more serious parts. Takes place at the end of lesson zero. Please tear this apart with comments. I like criticism. Comment if you have issues, don't leave me with a mystery thumbs down.

When David volunteered to be part of a cryogenic experiment he thought he'd be at the forefront of human technology, spearheading research and development.

Unfortunately politics doesn't work that way.

Lucky for him, the science was solid... For ten thousand years.

AN: Don't take this seriously. Seriously don't. I don't.

Special thanks to my editor: Thornwing!

A-d-d-ditional Tags: Science Fiction, Parody, Waking Up In the Future, Equestria used to be Earth, Parity Bits, Things That Could Be Considered Irrelevant To The Premise And Is Only Used As Humour, Twi-bright, Kangaroos, Towels and Brawndo.

Rated teen for inappropriate scenarios. Well, lots of inappropriate scenarios. Now with 20% more Dark!

List of Side Stories:

The Story of the Equinos and Celestia
Twilight's Report
A Butterfly Bash
The Very Hungry Caterpillar

Unpublished Stories now available here.

I'll also keep the former list I made here:

The Story of the Gorlians and Equestria
Human Manual I
Equine Manual I
Why Emergencies Should Be Handled Calmly
Why Emergencies Should Be Handled Calmly II
Blue Pill
David's Nightmares
Robot Manticore Attack
The First Law
Discordant
A Dated Journal Entry
McQuestria
McQuestria II
To Touch The Stars

When Sombra, ex-ruler of the Crystal Empire, is discovered alive and well, Twilight has her hooves full keeping the tyrannical king in check. Instead of the original plan of throwing him in a dungeon or banishing him to Tartarus, Celestia decides to go with the plan that worked out well enough for Discord.

To reform Sombra.

Pinkie takes the job, and gets right to work in helping Sombra become a better pony. Will Sombra finally change from his old, wicked ways and reform? Or will he instead strangle the annoying, pink menace known as Pinkie Pie?

Thanks to the awesomely talented Mickeymonster for letting me use his art! Check him out for even more spectacular artwork!

Rarity and Fluttershy have been friends for years, and every week they go to the spa. But after every trip, Rarity finds herself growing greener with envy over Fluttershy's beauty and grace, if not something more than just envy— and what might happen if she finds out Fluttershy feels the same way about her?
Rated Teen for moments of sensuality, foreplay, and sexual themes. Reader discretion is advised.
Assistance by Karrakaz, Blue_Paladin42, TheGreatEater, Setokaiva, Squinty Mudmane, Aurora, Starfall, and Ariamaki.
Cover Image by Megasweet, used with permission.
Image colored by Explosivegent.
Additional graphical design by Novel-Idea.
TV Tropes page can be found here, credited to Winter Lily.