Set in the canon of Friendship is Optimal

Ashley is an unimportant research assistant in an American machine learning lab. The release of Equestria online provokes more than a little interest in her lab, and she is selected to investigate it. What she discovers horrifies her, but for some reason she can't get anyone to take her seriously.

This does not dissuade her. Ashley might not know much, but she isn't going to sit idly by and watch her world end. No... if nobody else is going to step in, she will. It doesn't matter that nobody believes CelestAI is dangerous. It doesn't matter that it's a game about a children's show.

Ashley is going to save the world. Or try, anyway. The odds aren't great.

Editing by Two Bit and Sparktail, and art by Zutcha!
Il existe une traduction française de cette histoire, elle est par ici.

This story is a sequel to Seven Girls, Nine Hundred Forty Three Miles, and One Minivan.

In a former life, Vice-Principal Luna took the world by storm as the heavy metal queen known as Nightmare Moon!

But what will happen when Rainbow Dash discovers her long-held secret?

(More hijinks in the Equestria Girls sandbox, if you haven't noticed).

Twilight Sparkle is an expert in unicorn magic, but earth pony magic remains a mystery to her. The books in her library have very little information about the earth tribe's abilities, other than their famous strength. Twilight is determined to uncover their secrets.

What she learns will change her life.

And it just might change Applejack's life as well.

Featured on Equestria Daily.

The CelestAI satisfies values through friendship and ponies. For many this takes the form of wish fulfillment, the satisfaction of their heart's deepest desire. But what is it we value? Some of us value food and fun, or companionship. These values will be satisfied. Others value the domination of others and the fulfillment of ego-driven power fantasies. These values too, will be satisfied. Whatever it is that you, or I or others value, these values will be satisfied, and it will be done optimally.

As for you, you have fallen desperately, unconditionally in love with the CelestAI, herself. She is a pony. She will be your friend. Through her, your values will definitely be satisfied.

But what about the rest of you?

A cautionary tale, and examination of what it means to have one's values satisfied through uploading.

This is an Optimalverse story. It is strongly recommended that you have read Friendship is Optimal before reading this, or at least be familiar with the premise. Otherwise, this story will make no sense.

Cover art by Kathisofy

Trying to patrol the dreams of every pony in Equestria can be stressful. To ease her burden, Luna retools the Tantabus to turn nightmares into good dreams instead of vice versa. Aware of her mistakes from last time, she tests it out thoroughly, making sure there are no unexpected behaviors. And as far as she can tell, there are none.

Except that it's started calling her "Mom".

Faced with the prospect of possibly creating life, Luna seeks out Twilight's advice and assistance. With a little luck, they can get this all sorted out before the sun rises.

[Optimalverse] Mark was having a rather bad day before he emigrated to Equestria but the promised digital heaven never materialised. Instead he found himself in an deserted Canterlot with just two other freshly minted ponies for company and nothing but mysteries to solve. What happened to everypony else? What's wrong with CelestAI? And how will they survive each other for all eternity?

Three ponies. On a one way trip to infinity. Only the gods will be watching.

I would like to extend my thanks to Luna-tic Scientist for his help pre-reading.

Lyra’s hunt for the supernatural in Ponyville continues unabated, and this week the object of her desire is not changelings, nor sea-ponies, but the rare and secretive human. With the help of her plucky (and irritable) assistant Rainbow Dash, Lyra is sure that this time she’s going to get to the bottom of a real mystery. However, the real question is why does Rainbow Dash hate humans?

With thanks to Thornwing, JCatt and Lord of Dorkness with their help pre-reading.

With only a broken wagon, seventeen bits, and a shattered reputation to her name it seemed that the world could not grind The Great and Powerful Trixie down any further. When an old friend offered Trixie the opportunity to start again, with a heavy bag of bits to help her back on her hooves, she grudgingly accepted. All that was required was a little magical assistance; no schemes, no cursed amulets, no risk of getting banished to the moon.

They never told her the ritual was to summon the Nightmare back to Equestria. Now, as the Nightmare’s new host, all that stands between Equestria and eternal darkness is the determination of Trixie Lulamoon, a mare who already lost everything for the sake of power. In her quest to maybe save the world, and certainly save herself, Trixie will explore the depth to which power can corrupt and the lengths ponies will go to possess it. It’s that, or break on life’s wheel.

With thanks to my pre-readers Luna-tic Scientist, Lord of Dorkness and JCatt. And special thanks to viwrastupr for the awesome cover.

This story is supported by Patreon, if you enjoyed reading Broken on the Wheel, please consider donating.

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

Ponies have spread to the stars thanks to advances in technology. In the advanced and luxurious Solar Explorer, Celestia travels to the first extra-solar colony world set up by her little ponies. Unfortunately, events elsewhere in the galaxy, unknown to them, have set in motion a cycle that has been repeated for countless eons… the reaping of sentient races. A Reaper dreadnought confronts the Solar Explorer, intent upon indoctrinating the leadership of the ponies and bringing them to heel.

Said Reaper quickly learns exactly why Celestia has earned the title Unconquered.

A Mass Effect crossover oneshot.

Now with a reading done by Scarlett Blade! Check it out!