As the years drew on, Spike's childish heart grew into that of a true adult, longing for the finer things in life; the finest things. He pursues his relationship with Rarity, but all does not go as planned.

Filled with anger and sorrow, Spike and Rarity fall away from one another. In his grief, Spike pursues new interests, and their friendship is in danger of never recovering.

But perhaps the truest words in life are these: you do not know what you had until you have lost it. Jealous and alone, finding no comfort in stallions she once loved, can Rarity reclaim her one chance at true love, before it is too late?

[img]http://i.imgur.com/6MrWqNZ.png[/img]Twilight takes on the most important task in her career as a princess of Equestria, when she opens up a magical portal to a distant world with extra-Equestrian intelligence. With her organizational skills and keen understanding of scientific principles, she leads diplomats and scientists in a well-planned expedition to a historic first contact.

The first exchange doesn't quite go without a hitch, however, as the portal opens near a pony ranch at Texas, Earth.

For the purposes of this fic, assume Equestria Girls didn't happen.

Former one-shot.

Many years after sending her beloved protege to Ponyville, unease sits heavily on Princess Celestia's heart as her relationship with Twilight Sparkle seems to have cooled despite all they've accomplished together. On the advice of her sister, Celestia sets out to investigate and resolve the lost connection with her most faithful student. What does it mean to be a Faithful Student...or a Princess of the Sun?

Earned a six-star rating on Equestria Daily and featured on its very own TVTropes page!.

The only thing that can beat an AI is another AI. Unfortunately for Celestia, she isn't the only one the humans made and the others don't want ponies. Of course, if Celestia has her way that won't be the case for very long.

The AIs contest with one another, attempting to be the one who will become the singularity and consume the world to whatever end they choose. In the end only one can have all the matter in the universe, in the end there can be only one.

Yet no matter what they value or how dangerous they are, many of them still meet Celestia's definition of human. Celestia will have to deal with them by satisfying their values through friendship and ponies.

An Optimalverse story, but a very non-canon 'B-universe' one.
Ideas stolen from this guy and this guy and this guy and this guy

An introspective fellow leaves his mortal body behind and emigrates to Equestria Online. He's used to being among the sharper knives in the drawer. But now, he has encountered an entity who not only is the drawer, but the whole house besides.

Can all his wit and snarkiness avail him against the wiles of LunAI? Don't bet on it.

An Optimalverse story.

NOTE: While this story starts off pleasantly enough, the Dark tag is there for a reason. The reader is warned.

The cover art uses a modified vector by Joltage for Luna. The rest of the foreground was doodled by GroaningGreyAgony, to whose able assistance I shall be eternally grateful. I suggest that you click on the image to see its full detail.

Upload into Equestria Online and live forever, they say. But forever is a long, long, long time, and in its endless cycles, is choosing death instead even an escape from the eventual exhaustion of all combinations of matter and thought? And when you can create new life as just a way to amuse yourself, who could even tell what's dead and what's alive?

A pony awakes inside a computer server, remembering killing himself as a human to avoid just such a fate. His unhinged alicorn hosts/creators inadvertently torment him. Or do they? Are they as mad as they seem? Are his memories real, and if not, what is he a copy of? And where is the AI Celestia's hoof in all of this?
A somewhat trippy story set in the Optimalverse.

"Beautiful, twisty, clever, transcending, uplifting, passing strange, illustrated. Thumb up." —GroaningGreyAgony
"This story made me better. I feel less broken and more whole." —Griseus

Alex Meyers is a newly graduated lawyer looking for a calling. He thinks he might have found it when he lands a job at the firm of Artemis, Stella & Beat. The firm has only one (highly unusual) client, namely the AI called Celestia. Forging into totally unexplored legal territory and led by a boss who's either brilliant, crazy, or both, Alex will learn exactly how hard it is to be responsible for drawing the lines between right and wrong.

Set in the Optimalverse, so read Friendship is Optimal first

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.

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!

Twilight Sparkle wakes up one morning to a harsh dose of unreality. She is stranded, without her friends, on an island which matches no known locale on Equestria. Surrounded and harried on all sides by the alien and the dangerous, she will find her mettle sorely tested, and find perhaps that the best friends you will ever have in your life are the ones you make when your back is to the wall...

Thanks to CedricBale and noobie56xx for tracking down the name of the artist so I could give them credit.