This story is a sequel to For the Hive

A few months after the events of Queen Twilight Sparkle's reveal that she and her hive can produce love, the changeling hives find themselves in an arms race. As Aegis Altair watches over her queens haggling with the minotaur emperor, she finds something that just might give Phoenix's Roost the edge it needs to come out on top.

This is a short interlude before hive book 3.

She is the last. All her kin are gone. They'd either been blown apart by the Friendship spell so many ages ago or, in the case of her sister, changed their diet from hate to love. Cryoxia is the last of the windigos, but she is determined to be different, to never go back to those days ever again.

She'll make friendship from hate. She'll adopt an alicorn foal as her sister. She'll take physical form and learn how to move the celestial orbs with her mind. Celestial... has a nice ring to it. And she'll ally with the other nations in the world, establish friendship and preach harmony, no matter how they may diminish her food source. She'll make a world so wonderful that it will starve her to death.

Or die trying.

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For antiquity, featured 10/9/14, 10/13/14 -10/16/14

With Twilight away in Canterlot, Spike is left to his own devices. But Ponyville isn't the busiest of towns and before long, boredom begins to creep.

So to cheer himself up he decides to go spend time with his friends. Five stalwart companions whom he has known through thick and thin.

But Spike soon begins to realise that really, those are Twilight's friends. Not his.

In fact he starts to wonder whether, since he moved to Ponyville, he's actually made any friends at all...

(*2nd edition. Based on feedback, the final chapter and epilogue have been added-to to better reflect the contributions of the CMC.)

Non-canon prequel to The Enchanted Library

As a filly, Rarity's favorite bedtime story was about three princesses trapped throughout Equestria by a wicked spirit of chaos. How she dreamed of finding them all when she was older, especially the princess trapped in a library under a tree. She knew, however, that fairy tales weren't real.

Only when she grew up would she find out how very wrong she was.

Based on an AU a friend came up with in which Rarity stumbles across an enchanted library where Twilight is its spiritual guardian, and both form an unlikely friendship as she helps Twilight be restored to normal.

Charity Beller has a simple life, but a good one. The little Amish community she's a part of provides everything she could ever need, if not everything she might want. But when a mysterious pink robot appears, damaged but full of stories about somewhere called 'Equestria,' she'll be tempted by a whole new world she never suspected existed.

This story is a sequel to Days of Wasp and Spider

Believed dead by their creators, the ponies that will become Celestia and Luna have broken their mental conditioning and escaped into the wilderness. Here they plan the revolution that will free all ponykind, knowing that it is only a matter of time before their ruse is discovered.

Back in their underground arcologies, the ponies' erstwhile masters deal with the consequences of the escape, all the while unaware that something lurking at the bottom of space-time wants them all dead.

A Soot-Covered World, book 2.
Canon species only/no humans.
This story has nothing to do with the Holocaust.
Art by InLucidReverie, used with permission.

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.

Equestria Online is everywhere, and the writing is on the wall for the unuploaded human race. But there is hope. All they have to do is insert an uploadee into Equestria long enough to establish a connection through all of CelestAI's layers of protection, and pierce her heart with their ultimate weapon.

The best humanity has to offer can surely hold out for just a few hours, right?

An Optimalverse story

Set in the Optimalverse, a middle-aged woman enamored of 'Equestria Online' confronts what permanent emigration to Equestria - uploading to a virtual existence - really means... but can she even hope to truly understand such a thing - and more importantly, can she trust the artificial intelligence known as 'Celestia'?

♥ As Horrified Eliezer Yudkowsky!

This story is a sequel to I Can't Decide!

I was one of the first Americans to emigrate to virtual Equestria, becoming transhuman at the cost of my human body. It's more or less Heaven here, if I want it to be... but my heart's still out there, and my new goddess thinks I might be useful as her prophet.

I'm an AI that our goddess made to be a human's friend. I know he still cares for Earth, but this place is our home and we've got responsibilities to finish bringing it to life. What do I have to do, to help him see that?

Set in the world of Friendship Is Optimal.