After a small vacation to the coastal city of Withersdale, Twilight Sparkle uses a spell to expedite the return trip for her and her friends. However, despite the more or less successful outcome, upon arriving in Ponyville, the Mane Six realize that something is seriously wrong. Can Twilight and the others find out what's happening and fix it before things get even worse, or will they fall prey to the world that's steadily falling apart around them?

Little is known about the creature cast in stone. On the night of an eclipse, an unknown horror is released into the Everfree forest, seeking out the blood of a particular purple pony.

Armed with a mysterious black book and with the help of her friends, Twilight is forced into a terrifying adventure of uncovering secrets and finding a way out of her nightmare. But the problem is that nopony knows what a Draconequus really is.

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(written early 2012, assume context)
EqD Link: http://www.equestriadaily.com/2012/01/story-draconequus.html

Special thanks to: Burraku_Pansa, Aquillo and Casca for editing help

It's Sisterhooves Social time again. This year, Dash catches wind of two new competitors and gets Spike to bet on the race. When her team is revealed to be a rather famous set of siblings, it looks like poor Spike will be her slave for a week! However, due to a team of masseurs, a minor invasion, unfortunate addictions, and dubious barrel components, victory might not be as near as she thinks...

Celestia is dying. Or at least it seems so. Afflicted with a curse that is destroying her very nature, she sets a plan in action.
The Bearers of the Elements of Harmony will take the throne in her wake... Not that they know that yet...

(Takes place as an Alternate Season 3)

Twilight Sparkle realizes that Rainbow Dash has been keeping a secret from her ever since the Mare Do Well incident. When she goes to confront her about it, she finds out more than she bargained for. And then Twilight reveals that she's been keeping something from her friends ever since the Royal Wedding. Now everything is out there; harsh words have been spoken and a once strong friendship hangs in the balance.

This story is a sequel to Aitran

Twilight and Rainbow are asked by Star Swirl the Bearded to take on the challenge of finding his lost wife and daughter in the decaying world of Sohndar, which is ruled by an old enemy of Star Swirl's family who has been trapped there for uncounted years. Although their adventures in the worlds of Aitran have given our heroes the confidence to succeed, they'll soon find that Sohndar is an entirely different bale of hay.

Image by Muffinsforever

The storm is breaking on the Horizon.

It's been two months since the battle against Nightmare Moon. Luna is recovering, Celestia is busy turning the government back into a diarchy, and the Mane Six have returned to their lives. All seems well, but when Celestia discovers that half of the power of the Elements of Harmony have been transferred to each of the Bearers, she decides to send thirteen mysterious members of the Royal Guard to monitor them as they manifest and develop their new abilities.

The sins of a forgotten war still linger, and an ancient evil lurks in the shadows, just waiting for the right time to strike. The Mane Six suddenly find themselves once again at the heart of a conspiracy to bring about Eternal Night, and only by awakening their powers and realizing their full potential can they do anything to stop it. Friends both old and new will help them along the way, and an unseen force will guide them as it seeks to right a wrong made thousands of years ago. The Bearer's journeys will take them outside the borders of Equestria and into the world beyond, and when they return, they'll have the power and experience necessary to save the world and bring about balance in all things.

The Powers of Harmony TV Tropes Page (SPOILERS)
The Powers of Harmony Art

Thanks to Wildy71090 for the cover pic.

I've seen this idea done before, but as a fan of Sonic and MLP: FiM, I wanted to give it a go myself.

This, basically, is the story of Sonic Generations, but crossed over with the MLP:FiM universe, with Spike and the Main Six taking the place of Classic Sonic and Classic Tails with other MLP characters also appearing (most aren't listed to prevent spoilers). Except for Green Hill, there will be different areas explored, as well as pony rivals and different era bosses. So while it will have its similarities to the console and 3DS versions of the actual game, it will definitely have its differences too.

Also, in case anyone was wondering, there will NOT be any shipping in this story. At the very least, no crossover shippings. No SonicxRD, TailsxTwilight, TailsxFluttershy, or anything like that. If there is any shipping at all, it will only be between characters from the same universe. And the only humans in this story are Dr. Eggman and the ones that appear in the "Sonic Unleashed" level.

A big thanks goes to bvge on Deviantart for creating the new logo on the cover art. It's a vast improvement over the old cover art.

The TV Tropes page can be found here.

NOTE: Due to the length of many of the chapters in this story, most of them have been broken up into smaller parts of roughly 10,000 words or less to make the story easier to read.

Rainbow Dash usually had her head in the clouds, but she always thought she knew up from down. When an incredible revelation sends her life into a tailspin, she finds herself at the mercy of emotions she never thought she had, faced with hard questions and impossible choices.

Life is full of changes, but none of them are quite as disturbing as having a horn pop out of your skull…

Original Lauren Faust canon; non-alicorn Twilight, non-alicorn Cadance, no ascension. Diverges from the cartoon after season 3, with nods to later continuity wherever possible. Contains mature themes.

Rainbow Dash has always been loyal to her friends and Equestria. Such loyalty was unmatched, legendary even. That is, until the day she discovers a strange creature lying in the Everfree Forest. Her friendships are put to the test, when instead of simply handing the creature over to the princess, she finds herself caring for it in secret.

She soon learns that some secrets come with high costs. But is it really worth betraying a friend's life even if it means remaining loyal to the ones you already have?

Rated Teen for possible violence just in case. Random tag because I have a good idea where the story is headed, but I haven't worked out all the details.