After being marooned on an icy world in unexplored space, Lumina must now face the perils of this frozen wasteland and search for some way home. But in this dark place, she discovers something that was lost to pony kind ever since the fabled Equestria sank into the ocean over 10,000 years ago. Something that will change her, and possibly the entire galaxy, forever.

Not a cross over, and not an alternate universe. This is the far future, and this has happened before.
Cover art by CSImadmax

Now in the FimFiction Gold Archives!
Now on Equestria Daily!
Now featured in Fort-Book Reviews!

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!)

This story is a sequel to The Flight of the Alicorn

Rarity was certain her troubles with magical gemstones had ended, but an unexpected royal visit soon convinces her otherwise. In order to save an ailing Princess, stop an ancient menace, and avert a disaster that threatens the survival of a lost tribe of ponies, Rarity, Blueblood, and a brave group of friends will travel to strange and foreign lands, and into the fathomless depths beneath tormented seas. In her quest to uncover the secrets of the Abyssal Forge, Rarity will have to use all her charm, wit, and skill—and rely on allies old and new—as the unlikeliest of ponies once again attempts to save the world in style.

Part Two of Three
The Adamant Triskelion - Book One: The Flight of the Alicorn
The Adamant Triskelion - Book Two: The Abyssal Forge
The Adamant Triskelion - Book Three: ???

Beautiful cover art by Lucky Dreams.

"It's so nice to see you again!" said the thing that was not Celestia. "Oh yes, I know who you are, Twilight Sparkle. I had a taste of your magic the first time we met. Mortals forget things so easily, I find. Allow me to refresh your memory: you tried to kill me. But you failed, Twilight Sparkle. You only mostly killed me. And I guess that makes you one very unlucky little pony."

This story is a sequel to Scion of Chaos

Five years after the summer in which the three had gotten their cutie marks, Scootaloo, Sweetie Belle and Apple Bloom, now young mares in their own right, decide to go on a quick summer vacation, all as an attempt by Sweetie Belle to cheer up a sad friend. However, the trip turns out to be more than they had anticipated.

Set five years after Scion of Chaos and An Emerald Treasure. For the sake of context I'd recommend reading both of those first.

Special thanks to Mac349 and Plebeian for proofreading. Thanks to CMC4TW for editing/idea-mulling.

Twilight and her five friends are transported during a botched spell, across dimensions to... Ponyville, Equestria? But not the same one that they knew. Sitting on a bench is Harpsy and Babar. The Doctoress avoids apples from an aspiring Applebuck. And in a library across town, six stallions join their forces as they try to decipher the appearance of filly look-alikes of themselves around Ponyville!

This story is a sequel to The Celestia Code

When the monsters created by the dark crystal engine escape their prison, it's up to Princess Twilight Sparkle to deal with them. She gets help and advice from Princess Luna, but things don't go as planned. In fact, when a pony who relies on logic and rationality tries to navigate the stormy seas of emotional entanglement while simultaneously saving Equestria from a horde of evil creatures intent on destroying everything they encounter, nothing goes as planned.
AUDIOBOOK by VisualPony
WARNING: Major spoilers in the comments.

Book 2 of the Alicorn Adventure series.

Goodreads Page
100% Approved by Twilight's Library!

The Badass Twilight tag applies more than ever, but please note the new tags.

This story is a fairly direct continuation of The Celestia Code. You might be able to follow it without having read The Celestia Code first, but it's better if you do.

The sequel is here: The Twilight Enigma

Most excellent pre-reading/editing done by the erudite AcademicPony and the dapper statoose!

This story is a sequel to The Best Night Ever

Final Arc - The Black Wedding
CH63 - If I Had a Heart
- The ponies of the Fourth Tribe are ascendant. Shining Armor hunts down his changeling "daughters," and even Lady Antimony won't get in his way. Meanwhile, high above the burning city of Canterlot, a long awaited reunion occurs, and Twilight confronts Alpha Brass and makes a final decision.

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It began with a mare from Ponyville and a time-looping Prince from Canterlot. This most unlikely union now stands at a crossroads: a ruthless changeling invasion; a conspiracy within the highest circles of the Equestrian aristocracy; a half dozen power hungry noblemares looking to become a Princess in all but name. With the prize of Canterlot and its Platinum Crown at stake, it falls to six Elements of Harmony to once again save not just Ponyville, but all of Equestria.

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TVtropes page is here: link

The prequel to TPC, "The Best Night Ever" is here. link
The side-story crossover with "Sweetie Belle Chronicles" is here. link

Someone out there made a playlist for Platinum Crown: Rarity, Blueblood and Chrysalis. Pretty sweet!
Wish I knew who, or even when they did it, though. I especially like the Chrysy playlist.
https://8tracks.com/explore/this_platinum_crown/hot/1

I've gotten some cool TPC related art done, too.
So Sweet and Tasty's TPC Cover Art
link
Thanks to Madmax for these two:
Rarity, Blueblood and Antimony
link
Dash and Ritterkreuz
link
The Terre Rare Founder - Lady Arsenic
link
Twilight and Alpha Brass Battle Duet
link

Princess Twilight Sparkle discovers a centuries-old mystery hidden in the Royal Archives. Her investigation leads through layer after layer of deception and misdirection, setting her hooves on a path that seems to be leading to a mysterious secret. Along the way, she learns that some friendships can be very, very strange.

Book 1 of the Alicorn Adventure series.

AUDIOBOOK by VisualPony
Featured at the Royal Canterlot Library
TV Tropes Page (Courtesy of Sandtalon)
Goodreads Page (Courtesy of Facedeer)
Equestria Daily Page

WARNING: Major spoilers in the comments. Takes place several months after the end of season four. (Not a Da Vinci Code crossover, BTW!)

Do you see a dark tag? No, you don't. Not dark. Well, okay, there are a couple of dark-ish bits, but that's all. Not enough to warrant a tag. Speaking of tags, there really ought to be "Badass Twilight" and "Friendshipping" ones.

Sequels and side-stories (and more) can be found here Offprint and AO3, and a hardbound two-volume set of all that can be ordered from The Ministry of Image.

My editor for the first edition of this story was Gogito, and I can't thank him enough for all the hard work he did. My editor for the revised version was PresentPerfect, and he did a terrific job of getting the story into excellent shape.

This story is a sequel to The Elements of Harmony and the Savior of Worlds

The Conversion Bureaus have won. Humanity has been ponified, all traces of our civilization wiped clean from an Earth turned into Equestria. Princess Celestia rules over all, the tyranny of free thought abolished.

Humanity is at the cusp of a golden age. With allies both near and far, biped and quadruped, we strive for greatness, united as never before. Our mark shall be made in space, our influence felt throughout this Spiral Arm.

The Tyrant Princess sees this and is angered. A dome is opened... but this time, humanity is not alone against the Conversion Bureaus.

A spinoff/sequel to The Elements of Harmony and the Savior of Worlds, taking a place about a year after the events there, and my own little 'take' on the Conversion Bureau. This makes it a crossover with Transformers Generation One, GI Joe A Real American Hero and My Little Pony G1.

Thanks to Velkaden for the title. As well as Shubzilla for proofreading, the anti-Conversion Bureau for their help and SJC for help with the look of Megan.

Trope page: Here.
EQD link: ... A man can dream?