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 Sparkle never was a Unicorn and she didn't even know it.
What happens when her true heritage comes to light? Will she willingly embrace it? Or will she be forced to?

Beware of spoilers in the comments!

Edited by uTTerAbsurdity, Zervziel, Stormwatch and Gwenio

Cover art by the talented Cartoonlion and colored by the equally talented Stormwatch, original can be found here

Click here for the Tvtropes page

Nightmare Moon is alone and wishes to have a daughter to share her kingdom on the moon with. Twilight is alone and wishes to have a mother that will love her. What happens when their wishes are granted? Read and find out.

Russian Translation for the story here. Thankyou NovemberDragon for doing the translation you are awesome.

So let's just turn this into a meme why don't we? Filly Twilight adopted by Villian X! I don't know I saw the ones with Daybreaker and Chrysalis and thought, "Oh what the hell I'll do it too because it's fun!" So here I am bringing you a story in a similar vein. Please enjoy the story and CONSTRUCTIVE criticism is welcome. If you are going to downvote tell me why you did so I can improve. (Unless you're being an a**hole than I don't want you here.)

Featured on 7/10/18
Day one featured! That's awesome thank you all!

HOLLY S**T DAY ONE AND MY STORY IS CONSIDERED HOT! THIS IS AMAZING THANK YOU ALL SO MUCH!!!

Thank you Julunis14 for the amazing cover art! Go give her some love she really deserves it!

This story is a sequel to The Moon and her Star

Twilight and her mother, Luna, return from the moon a year early and though Celestia is suspicious at first she eventually welcomes her sister back and her new niece with open hooves. However, not everyone is so welcoming. Twilight and Luna's relationship is tested time and time again as disaster after disaster stricks Equestria. Will their bond be able to survive, or will it shatter like glass?

Art by littlewashu45

Edit: Made #1 featured on 7/24/18

This story is a sequel to Change

There are many changeling hives spread throughout a large portion of the world. Wherever love energy is going to be found the changelings will pursue it.

But now, one by one, they are disappearing.

Many hives located at the very outer edges of changeling inhabited lands are vanishing without a trace, Twilight Sparkle's family history has returned to haunt them all as something is hunting the changelings down. But how? And for what purpose? And more importantly, what does this mean for Queen Twilight Sparkle and the rest of the changeling race?

Edited by RC2101_Copey.
Cover Art was designed by Jesuka.
TVtropes Page: http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/ChangeQueenOfTheHive
Physical copy: https://www.fimfiction.net/blog/806366/change-queen-of-the-hive-physical-copy

(Featured on the first day, 6/11/2016. Awesome!)

Twilight Sparkle was born on the moon, 999 years before the 1000th summer sun celebration. Her mother, Princess Luna, trains her and teaches her to be the perfect ruler. Her plan is to stop this Nightmare and be happy.

Of course, Twilight gets released early, and has to face this whole new world without her mother. At least it will be a while before Celestia finds her and finds out her motives, or will it?

Twilight will have to deal with things she definitely wasn't trained for, including a possible love interest?

New cover art made by Nablyudatel, my editor!
Link to their Kofi where they take commissions!
https://ko-fi.com/nablyudatel14658

A mother will do a lot for her child, even give them up if it meant them having a safer life growing up, despite the obvious pain that comes for the parent.

That pain is something Queen Chrysalis has gone through for eighteen years, but now the time is upon them, and she wants her daughter back. Even if that means invading Canterlot during a royal wedding.

Edited by RC2101_Copey
New cover art was created by the talented Jesuka
Now has a TVtropes page: http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/Change
Go watch the reading by Skijaramaz: https://www.youtube.com/watch?v=Ecqtu_Djrw4

(Featured on 18/10/2015, the first day! Thank you!)

Change is now a printed book, information here: https://www.fimfiction.net/blog/732008/i-got-a-thing-change-is-now-a-physical-book

Twilight Sparkle has too much magic, and it will take her decades to learn to control it. Her spectacular loss of control during her entrance exam only proves that fact. She is a danger to herself and others.

After Sunset Shimmer’s disappearance, Princess Celestia needs a new student to bear The Element of Magic to defeat Nightmare Moon. With all of Equestria at stake, Twilight Sparkle…is not the pony she needs.

Princess Celestia seals Twilight Sparkle’s magic with the distant promise of one day teaching her.

But there are two diarchs of Equestria. Amidst a lucid dream, an offer is made.

“Hello, Twilight. Would you like to be my student?”

Cover art provided by Lafiir.

This story is a sequel to Change: Queen of The Hive

Princess Avia is looking forward to the Summer Sun Celebration in Ponyville, having heard so much about the town in question from her mother. A grand celebration, seeing her mother's best friends, what could be better?

Unfortunately, where Ponyville in concerned things rarely go as planned.

Edited by RC2101_Copey.
Cover art by: SentireAeris.
Featured 23/06/2018.

Following the return of the Crystal Empire, Twilight begins some intensive research into the history of the Empire and its late king. Modern historians know next to nothing about the enigmatic dark mage. Who was he? Did he have family? Loved ones?

The answers to those questions changes everything the Element of Magic knows about herself, and in doing so catches the attention of a shadow that yet clings to the frailty of life...

Cover art made by Skijarama!
Reading can be found here.
Edited by RC2101_Copey.
Featured on 20/10/2018.
Russian Translation: Here