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

Celestia is trapped on Earth.
Not as a human. Not as an alicorn. She's a common horse, an Arabian mare, without her magic, voice, knowledge of the language - not even freedom, forced to work at a riding school.

What can a single Arabian mare do to get back to Equestria from this backwater European country? With only the mind of a princess and a pencil in her teeth, Celestia must find a way home.

[Illustrated] [Alternate Earth] (without Bronies)
Rated Teen for language and some scarce suggestive themes.
Proofreading by AlicornPriest

Polish language version

Twilight finds out something isn't quite right about the crystal castle and herself. When she learns that something has changed about her and she isn't who she thinks she is, she tries to find out why and how that came to pass.
The answers isn't what she expected, but now that she knows, what will she do with that information? Will she change, continue, or end it all?

A mysterious force send Gohan and Videl to Equestria, where they start their new life working at Applejack's. Everything is completely normal until the Cutie Mark Crussaders found about Gohan's power, so they force the young saiyan to train them to obtain a super cool Cutie Mark in martial arts and participate in the most famous torunament of martial arts of all Equestria; the Budokai Tenkaichi

This is a translated version you guys, my original is posted in Spanish, my mother language. If you speak Spanish you can find the original here. It even have an epilogue about a battle between Tirek and Gohan (unfortunately untranslatable)

Twilight Sparkle has obtained the combined power of all four princesses of Equestria. Wielding this power, she confronts Lord Tirek, but the result of their fight is a tie. When he holds her friends hostage, she is forced to make a difficult choice.

All is not lost, however: one force remains in Equestria that could give her the edge she needs to defeat her foe, save her friends, and restore the world. She need only retrieve it from Zecora and place it around her neck...

Runner-up (one-shots category) in the Twyrant's Kingdom Competition.

Story inspiration: Corruption of a Desperate Mare, by Chris Wöhrer.

Edited by NightWolf289, AugieDog, and Prak. Thanks also to Pascoite for his WRITE review.

Rated teen for gore and dark themes.

Featured on:
Fimfiction.net Feature Box (05/12/14)
Equestria Daily!
The Royal Guard's Fic Spotlight #10.

This story is 100% approved by Twilight's Library!
Approved by Nonpareil Fiction!

There was a question... and Spike wanted the answer. The curiosity of it was gnawing at his little dragon brain like gerbils in a vat of candy corn. In desperation, he turns to Cadence for help, and she's more than happy to assist.

After all, it's just a simple question. What's the worst that could happen?

(Takes place prior to Season 1. Rated for scattered innuendo.)

Twilight and her five friends are transported during a botched spell, across dimensions to... Ponyville, Equestria? But not the same one that they knew. Sitting on a bench is Harpsy and Babar. The Doctoress avoids apples from an aspiring Applebuck. And in a library across town, six stallions join their forces as they try to decipher the appearance of filly look-alikes of themselves around Ponyville!

Spike only wants things to stay the same. Time, however, has other ideas. He's going to need a lot of help... An everypony story.

(Cover image by Rannva)

When your life is as dull a gray as the world that surrounds you, the mundanities can make it all seem meaningless. Sometimes all we need is a little color -- or six -- to reintroduce us to what truly makes life worth living.

*6-16-2017 Edit, added Rainbow Dash tag because it triggered knighty.*

*If you'd like to purchase a physical copy of this story, click here*

One of Equestria's greatest traits is tolerance. Every pony, whether Unicorn, Pegasus, or Earth, is accepted for who they are, and have their own parts to play in keeping Equestria running.

But what if an Earth pony decided he didn't want to play his assigned part? What if he wanted to rise above everyone else and become an Alicorn? Such a thing is possible... but the path to fulfilling one's dreams is never simple. Risks must be taken. Sacrifices must be made. And the question is always asked: How far would you go to get what you wanted? And would you be willing to pay a terrible price to get it?