SF (canon species only; no humans) Ponies were magically and genetically engineered to be the perfect servitor race. They are powerful, adaptable, intelligent and completely under the control of their creators. A laboratory accident frees one such pony from her mental chains, but how can one mare save herself and the rest of her kind if she doesn't even know she's a slave?
This is not the Equestria you know and these are not your little ponies... not yet, anyway.

Tags: Adventure, Diamond Dogs, Gryphons, NO HUMANS (did I mention that already?)
Other tags: historical, mind control, Clarke's 3rd Law, excessive use of high energy physics, before they were famous.
Detailed review by PaulAsaran.
Cover art by endrome , used with permission.
Russian translation (partial -- 'unofficially' completed in the comments)
A Soot-Covered World, book 1.

This story is a sequel to Swooping Pegasus

Rainbow Dash has been back in Equestria for four years, but the planet has not been idle. The knowledge that they are not alone has catapulted Equestria forward. Reverse engineered technology has pushed the world into a new golden age. Leading the way in new Arc-tech developments is Twilight Sparkle, her discoveries and inventions seeing use across the length and breadth of Equestria. Her latest invention is set to be the most influential yet, the crowning glory in the Element of Magic’s scientific career. When something goes wrong however, and Applejack is forcibly teleported from the boundaries of the world, only one pony has any knowledge about where she might be. But even she can’t do it alone, not this time. Luckily, she won’t have to.
Enter the Swooping Pegasi, and watch their descent into the darkness.

Now with a sequel: The Descent into Madness

This story is a sequel to Swooping Pegasus. I would recommend reading that story first to understand some of the bits in this story, but it is not 100% necessary.

Featured a fair amount of times, which I am personally very proud of XD
Thanks so much.

Rated Teen for Violence and Grim dark references

Just a heads up, this story is going to be much darker and much more violent than the first one.

I wanted to add other character tags, but didn't have the space. Also includes Spitfire and Lightning Dust.

Also, a big thanks to my Creative Consultant, Brother Malachai . This guy helped me flush out a load of ideas, as well as giving me some awesome new ones, so big thanks to him.

Artwork has been done by the massively talented El Mutanto.

Enjoy

Rainbow Dash is gone.
Two Years ago she performed a trick to eclipse all others, and vanished without a trace. Everypony has started to get over it, although for five ponies the loss is to great even now. In respect the Wonderbolts do a performance for her at the site of her death. However, a certain Cyan mare is hard to kill, and is loyal to the ends of the universe, she can say that with certainty now, she’s been, and now she’s back. But what is she wearing, and where did she go for two years? Buckle up, for in Equestria there may be peace, but in the 41st Millennium, there is only war.

Now with a sequel: The Descent into Madness

Featured: 06/05/2014. Thanks so much to you guys.

Rated Teen for Violence and Grim dark references

This story is similar in ideas to Into the Black: A mares tale, Diamond of the Capital Wasteland and Halo: On the wings of Angels

New cover art done by Reapers Inc

WARNING: Comments contain spoilers. Proceed into that section at your own risk.

Twilight becomes alicorn of the stars. This is sort of a problem, because Luna kind of already was alicorn of the stars. Oops!

TV Tropes

Soarin and Braeburn's son has an odd day. Can he survive bad jokes, dad puns, and a wrestling match over the "#1 Dad" mug in the kitchen cupboard?

Inspired by a conversation with Poptard. Go shower him with strawberry Poptarts and/or Doge GIFs if you enjoy this story. Or if you hate it. Or just because.

Thanks to ajvasquezbrony28, Marshal Twilight, Poptard, Pyrotechnic, ValorlordV5, and Sir Rustbucket for editing.

Rated Everyone.

The Cutie Mark Crusaders know that Babs Seed was bullied back in Manehatten, but how bad could things really have been? And how does Babs feel about returning to the city and the ponies who have hurt her the most?

(Note: to avoid confusion, the first few chapters of this story deal with past events that occurred before "One Bad Apple". I will add an Author's Note to the chapter that begins the "present" state of events and continues forward from there.)

Followed by Sweet Apple Anthology and Severed Roots.

Now with a TVTropes page! Thanks to vren55 for putting it up!

Rated Teen for some violence, language, and darker elements.

When the Cutie Map sends the mane six away on a dangerous mission to the Badlands, they enlist the help of three students from the School of Friendship to watch their pets.

Sparkler, a Canterlot unicorn at heart new to Ponyville, isn't too thrilled to look after a bunch of smelly animals, but it might be worth it if it means spending time with her classmate and secret crush, Stonecutter.

If only that annoying pegasus, Cloudburst, didn't have to tag along.

~ ~ ~

The first in the Tails of Equestria Series

The Problem With Pets
2 + 2 x BDSM (Love/4) = Fun
The Curse of the Statuettes
Nightmare Night
The Festival of Lights

Sex tag is included for some innuendo, talk about sex, and talk about D/S relationships.

Featured top of the Popular Stories list three hours after publication! Thank you to you all!

A very big thank you to Tethered-Angel for your help mate!

Based on the Tails of Equestria RPG books, any reference to them is used with permission.

Chapter 24: In progress.

I’ve been in Equestria for over 1500 years, and the memory of what I did to Luna and Celestia is still there, like a dull ache that will never go away. As an immortal, I’m going to have the next few thousand years to get used to it. Despite that, only thirty years have passed back on Earth. I wonder what’s become of Luna since we traded places. Is she alive? Dead? Married with kids?

My name’s Catherine, and you’re probably wondering what I’m babbling on about. If you’ll bear with me, I’ll start where it all began.

Tags (character and otherwise) will be updated as necessary. Rated teen for strong themes.

Character Sheet. (Work in progress.)

Cover art by Silfoe
High-resolution
Textless version

Edited and Proofread by:
Journeyman
thesaviour711
Greenback
Jay the Stormtrooper
Requiem17
Samaru163
Flammenwerfer
This list will be added to as people help. This includes single chapters and mutual favours.

Creative discussion and constructive criticism are welcome.

All OCs belong to me unless otherwise specified. Any likeness towards other characters and names is purely coincidental.

Update Features (D/M)
2017: 24/05, 24/06, 15/11, 19/12
2018: 21/02, 15/03, 9/04, 17/5, 4/6, 23/7, 29/08, 18/9, 26/10, 14/12
2019: 9/03
2020: 9/03
2022: 26/01

Twilight Sparkle was presumed to be dead. Destroyed without even a body to bury, the young victim of a deadly magical surge that claimed the lives of many others along side her. More than a decade later, reports of a violent murder by a pony bearing her name are brought to Celestia and Luna's attention. A trail of carnage leading directly towards Canterlot's doorstep, brought by a pony who strikes without mercy. As Twilight approaches, in service to an unknown master, the Alicorn Sisters desperately try to uncover what happened all those years ago.

Edited by Zintegy and The Pink Mugsy

Chapter Heading Art by KirillK
All Sketches and Artworks can be found HERE