Could the balance of good and evil belong to a single pony? If so, would balance be maintained, or fail bitterly? Can we really trust anypony to wield such power?

Too late. Somepony already has this power, and the emotional turmoil it causes is weighing heavy on his head. How long before he snaps? One was sure it would never happen, and perhaps she would've been right if not for a single shadow Equestria had thought dead.

Welcome to the future. Ponies have grown. Our main cast and others have got married and had their children, and it's time for you to meet them.

(Contains different arcs. Contains sex tag because of some pretty close calls by siblings and parents. Some tags will change over different arcs.)

On the way back from Fluttershy's house, Starlight takes notice of a young filly under a tree and soon discovers that she is without any known parents. Starlight wants to take care of the poor orphan, but is uncertain if she has the qualities that it takes to be a 'mother'.

This story is a sequel to Nightmare At CHS

Over fifty years have passed since Selene ended up in Equestria as the reborn Nightmare Moon. The bulk of the mane 6 are now old and misses the good times she has had with them.

She should have known better.

Now Twilight spell experiment went crazy and Selene finds herself in another Equestria and meets a pony she never expected to see.

Edited by Whodafaq146 and Crystal Glint
Featured:
1/14/2016
5/6/2016
8/10/2016

An artifact causes an incident where Luna's gender switches, and she becomes prince instead.

Evidently, Luna turned out to be a handsome prince. Now having to deal with confused and judging nobility, lots of mares vying for the Prince's affection, the paparazzi eager to get more scoops on the new lunar prince, and a sister who seems to want the prince to stay judging by how she sees the entire situation hilarious, along with her pranks and quips, Luna will have to work hard with Twilight to solve the mystery of Starswirl's Sphere and hope that she can return back to a normal life.

Art by jaquelindreamz.

Originally written by Kuairu.

When a drowning Twilight Sparkle is pulled from the ocean by a group of salvagers, she receives news that changes her life: she is now two-thousand years into the future, and Equestria no longer exists. Instead, there is the kingdom of Centuria, ruled over by the seemingly immortal tyrant, King Ganymede.

In this new world, unicorns are a rare sight and advanced technology is shunned by the general public. Twilight finds allies in Kevrana, a salvager with a heart of gold, and Hadran, Kevrana's suspicious and cynical brother. As a war brews in the land, Twilight, with only her new friends and legends of a strange place called the Vale to guide her, must set out to unravel the mystery of how she came to be in the future, and whether or not she can ever return to her own time.

Edited by Eldorado, Toothless the Night Fury, and Comrade Sparkle.

Image by SugarYoshi

Nightmare Moon returns and is hit once again with the Elements of Harmony rendering her a mischievous little filly.
Much to Nightmare Moon’s annoyance, Anon thinks she's cute as all hell and is the only one willing to put up with her antics and evil, so Celestia tasks him with reforming the bundle of misery and mischief.

Cover Image is by EvetsSteve, may he rest in peace.
Chapters 1-21 were converted into prose from my greentext stories with the help of Nav/WhatMustIDo

In the magical land of Equestria, two alicorn sisters raise the Sun and the Moon every day to give the world a night and day cycle, basic for the survival of life. There are also two alicorns who rule over two very core aspects of life and harmony itself. Those are Love and Friendship. While not as ancient as the two sisters, all princesses are essential to the world's balance.
This balance is also sustained by the hard-working ponies, who make the seasons change and manage the weather to fit their needs, so everypony has enough food and water, and every animal is also attended to assure that any of them are caught in the changes of seasons.

But what about the planet itself? What about Mother Nature?
This is the question that Gaia asks when she arrives to this foreign world. After so much work her son persuaded her to take a long vacation in Equestria, saying that she needed one and assuring her that he would be in charge now, and she must take a break. But what can a several billion-year old alicorn possibly do to pass her time in this land?

(SimEarth/MLP Crossover)
(Timelife of Gaia's life 'till the start of the story)

Discord once had a lover, fiance, special somepony whatever you would call it but after a terrible accident he promises he will never love again, but after thousands of years what if he finds that one of his lovers Descendants is an exact replica of her?

(Posey cover art was made by Sunley on devianart)

What if instead of Discorded Whooves finding her it was instead the Doctor Whooves and Assistant. How would that change the timeline? Would it cause things to change? Or largely remain the same? Find out in this story.

Note: If you are offended by references to blood than I suggest not reading the first chapter.

Crossover between Motherly Scootaloo and Doctor Whooves and Assistant.