On the eve of Hearth's Warming Eve, as Luna raises the moon, she is visited once again by the very entity which drove her to madness. Resisting it's influence, Celestia and Luna hatch a plan to end this once and for all.
One which works too well with unforeseen consequences.
As the nightmare loses it's power, it plummets to the earth followed by an explosion of Power that the Royal Sisters know too well. However when they find the epicentre of the explosion they are shocked to see an Alicorn with no memory, and no name.

Yet the question remains. Why does it resemble Luna so much that they could be twins??

Follow the story as this unnamed Alicorn makes her presence into Equestria, for better or worse.

After her students release the spirit of Discord on an official field trip, Cheerilee finds herself out of a job. With no opportunities in Ponyville, the schoolmare takes a job offer in the inner city area of Canterlot's old mining town. Can even she overcome the insanities of her colleagues and apathy of her students in time to pass her next annual review? And who is the mysterious backwards-talking filly following Cheerilee around? Luna's School for Disadvantaged Youngsters will never be the same!

Tv Tropes page can be found here.
Cover art based on work by blackgryph0n, used with permissiom.

Upon her return from Dodge Junction, something has changed inside Applejack. Her feelings for a certain pony have become as solid as the diamonds that adorn said pony's flank. However, will Ponyville's own Southern belle ever pluck up the courage to be the mare that wins Rarity's heart?

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

Inspired by the heroics of the mysterious mare known as the Stable Dweller, Silver Storm, a guard of the town of Marefort, decides to go on a daring mission to rescue her captured brother. Of course things rarely go as planned and her attempts at heroism drags her into a tangled web of plots and conspiracies as warring factions vie for control over the last great city: Dise.

Spanish Version translated by Spaniard-Kiwi: https://www.deviantart.com/spaniard-kiwi/art/Fallout-Ecuestria-Heroes-996263393

Twilight is invited to Canterlot to compete with some of the greatest magicians in the world for the Moonstone Cup, a prestigious award for the most powerful and skillful magicians, unicorn and otherwise. Can she win? What sort of competition will she face?

Awesome cover image was taken from NoOneBahtim

When Vinyl and Octavia first meet on the streets of Manehattan it seems that they have little in common. Octavia is a part of a prestigious String Quartet and a graduate of Canterlot's most acclaimed music school. Vinyl, on the other hand, is a young street musician, playing and living on the dirty streets of the low-end part of the city, trying to survive harsh winters without shelter. But there is a one thing they share that binds them together in spite of everything: music. And thus their story unfolds. But with all of the struggles they face and the secrets they keep, can two ponies who are so different ever find peace with each other and, more importantly, with themselves?

As the princess's protégé and one of Ponyville's most well-known and influential ponies, Twilight Sparkle has always enjoyed a comfortable life. Together with her friends she has battled and triumphed over dark ponies, dragons, and mischievous spirits. But what happens when her friends desert her and she finds herself hunted by her very mentor after she is wrongfully accused of an attempt on her life? Will she be able to overcome the desertion of her life-long friends? Will she be able to bear the burden of being an outcast? And more importantly, can she unmask the pony behind these acts before they get away with the Princess's murder? It's a race against time to find the culprit before Twilight herself gets caught and subjected to justice in this suspense and pony filled story!

Sundude and Moonbro are the most close of all brothers, but their life has some wicked sick surprises in store for them. Luckily, they are chill dudes and know how to handle the situation when things get sketch.

An argument was all it took. The Elements' power weakened as the Mane Six split apart, and Discord found himself loose once more. And this time, he decides to learn from his past mistakes and ensure nothing can stop him again.
The problem arises, of course, when he finds he's not enjoying it nearly as much as he should be.

First of multiple chapters. All plotholes will be explained in time, and characters will be added to the tags as they appear in the story!
Please excuse any formatting errors, as I only have access to Wordpad (perish the thought!) and I have to re-format everything manually when I paste it into the RTE.

That said, this is the first story I've submitted to the site, so any and all feedback is welcomed!