During her entrance exam, Twilight's powers goes far out of control, leaving Celestia a shell of herself and Equestria in ruins. Now Nightmare Moon is free, but even she can't stop the Tyrant Filly. She flees through time and space, finding herself in an Equestria familiar to us but odd to her. Can the Mane Six help her stop a Twilight out of control?

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Weekly featured fic in Authors Helping Authors group

TV Tropes Page, with sincere thanks to DrTempo.

Cover art from here.

Nightmare Moon is back and she's not alone.

She has discovered the anti-thesis of elements of harmony and raises her own group and army to strike at Equestria.

Her first step was to abduct Celestia, Chrysalis determined to rescue her back have to defeat one of her lieutenants.

When Chrysalis failed she may have to ask Luna's help to rescue her sister and join forces with Equestria to defeat a common threat.

Not realizing that dragging the whole of Equestria was Nightmare Moon's plan all along.

Full Version of:

Chapter 1- State of Nightmare "The Bright Side of The Moon" : http://raile21.deviantart.com/art/State-Of-Nightmare-The-Bright-Side-Of-The-Moon-511039832

Chapter 2 - State of Nightmare "The Dark Side of The Moon": http://raile21.deviantart.com/art/State-Of-Nightmare-The-Dark-Side-Of-The-Moon-517018910

After failing to stop Nightmare Moon in the ancient castle of the pony sisters, Twilight Sparkle is left with a scar that will permanently change the rest of her natural born life. As Twilight recovers from her ordeal, she finds that she is left with a difficult choice. Either live her life as a lie or sacrifice her innocence to protect the ones she loves. The path before her is set and she must now walk it alone. The sands of time continues ever onward, with everyone already trapped in its muddy depths. The sun will rise and the sun will fall. Waiting for its call, Death awaits for all.

Tags, rating, and characters can change.

Art created by:
http://cuteskitty.deviantart.com (top)
http://ventious.deviantart.com (bottom)

I just put the two together

Twilight Sparkle lived a relatively normal life, right? She now had friends, she had Spike, she even had her cosy little home in golden oaks library... everything was going brilliant for her. As she finally got a day off she received a letter from the Princess that she was summoned... alone. Strange as it may sound, Twilight hadn't been summoned alone in many years but when she arrives she is surprised to see both Princess' with worrisome expressions, so why was the Princess of Night there? read and find out!

First things first: this is a different universe from MLPverse so some things will inevitably alter, be warned I will not reply to those with questions as to why some canon facts are changed because thus I have warned you of this fact it will be changed. Thus ends my warning, have fun reading, Serra out.

The Elements of Harmony are defeated and Nightmare Moon stands on Equestria's throne as their new Queen. Is Equestria doomed to suffer through night time eternal or will they be... perfectly fine? Twilight finds her new job as slave or "personal assistant" to her new ruler to be a bit maddening. But is this evil sarcastic queen really as bad as she originally believed? And just how many others are diabolical enough to cash in on the change in staff? Can Nightmare truly run a peaceful Equestria? Let me just answer all these questions right here in the description...

Tom an Average Joe, saves a girl from an attempted rape. But he is fatalily injured and blacks out, only to wake up in a strange place in a body of a horse. A horse known to the locals as Nightmare moon.

Edited by Izanagi

Cover Art done by SwedishRoyalGuard http://www.deviantart.com/art/Nightmare-Moon-372321197

A thousand years ago, Princess Celestia banished her sister to the moon, that much we know. What wasn’t known, and what Celestia kept secret was that before her banishment, Luna had given birth to a foal. Now a thousand years later, as Nightmare returns to Equestria to bring about Eternal Night.

Twilight Sparkle, protege of Princess Celestia, struggles against the tyranny of this ancient foe. But how will she be able to save herself and her friends when the truth of this ancient legend crashes down upon her? Twilight will have to confront herself...and her heritage.

Polaris501

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?

You know the story of Nightmare Moon. Or so you think. What many do not know is that before she was banished, she had a foal of her own. Many people do not know, not even the Princess. Which is good otherwise she would have seen right through my disguise. My name is Shadow Moon but everypony over the past thousand years have called me Twilight Sparkle and this is my story.

Covert art by Giulia Beck

Twilight Sparkle has too much magic, and it will take her decades to learn to control it. Her spectacular loss of control during her entrance exam only proves that fact. She is a danger to herself and others.

After Sunset Shimmer’s disappearance, Princess Celestia needs a new student to bear The Element of Magic to defeat Nightmare Moon. With all of Equestria at stake, Twilight Sparkle…is not the pony she needs.

Princess Celestia seals Twilight Sparkle’s magic with the distant promise of one day teaching her.

But there are two diarchs of Equestria. Amidst a lucid dream, an offer is made.

“Hello, Twilight. Would you like to be my student?”

Cover art provided by Lafiir.