This story is a sequel to The Sun Burns Brightly

When you're the immortal ruler of an entire kingdom, the most important quality to possess is a passion for your work. No princess can rule her nation if she can't find it in herself to give her best effort every day and night. Luna knows this better than anypony, and puts her whole heart into everything she does.

But passion, unless tempered by restraint, has a way of biting one in the flank.

This story is a sequel to The Moon Glows Gently

When you're the immortal ruler of an entire kingdom, the most important quality to possess is self-control. No princess can rule her nation if her emotions rule her. Celestia knows this better than anypony, and mastered them long ago.

So long ago, she may have forgotten that a little bit of passion can come in handy now and again.

This story is a sequel to Hard Reset

After the events of Hard Reset Twilight's life and mental well being are slowly returning to normal. Her recovery is cut short, though, when a letter arrives informing her that the time loop spell she cast is causing severe damage to space and time itself. In over her head, Twilight tries to summon anypony who will know how to fix it. The pony she gets is the last one she ever thought she would meet... and nothing like she expected him to be.

Available in Spanish thanks to dgs1993
Series TV Tropes page

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

Princess Celestia is in your bed, and you don't know why: what do?

Cute, funny, and short. Have fun reading!

Proofreading by RaylanKrios.
Now with audio reading by CaptainBron3y
Second audio reading by MeloncholyIguana.

Based on this story:
Princess Celestia is (still) in your Bed
Princess Celestia Has Stolen All Your Bed Sheets
Drunk CelestAI Is In Your Bed
Fimfic Authors Are In Your Bed
Princess Celestia is in Your Washing Machine

This story is a sequel to Renaissance Pony

Twilight has always dreamed of meeting her hero, Starswirl the Bearded. She finally gets her wish fulfilled on a mysterious deserted world. Together they investigate how they got there, where the world's inhabitants went, and why amongst all ponies, they two were brought to this desolate place. To Twilight's consternation, the more they learn, the sadder Starswirl becomes, until finally she is faced with a devastating choice that would have her betray her mentor, her friends, and even her innermost convictions.

Artwork by Nevina, based on a prior drawing by TotallyNotaBrony (Note: you don't need to have read Renaissance Pony before reading this story.)

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

To Twilight Sparkle and Princess Celestia, it is a simple surprise visit to Canterlot. To the ponies of the Equestrian Civil Service, it is twenty-four hours of chaos, politics, weaponized dessert, politics, underhooved manipulation of media, politics, and things batrachian and tentacular. Who said bureaucracy isn't exciting?

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?

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