A blue box has fallen out of the sky, and crashed right into Twilight's Library! A strange brown stallion, calling himself the Doctor stumbles out. Soon after, strange stone Pegasus are everywhere, one of resident weather ponies has vanished, and Twilight is tossed in the middle! The Doctor and Twilight have to find out what's going on, before it's too late!

In a time of peace and tranquility between Seasons, the all-knowing Princess Celestia notices a brewing storm. The dimensions of Canon and Fanon are beginning to intertwine, and both worlds may collapse if no actions are taken. So, Celestia searches for assistance, and brings him to Equestria… a Brony named Marcus. Now that he has been exposed to the truth, his world will change forever, as he attempts to restore the balance with his allies, and get home in time for Season 3.
Review please. Like if you liked, Dislike if you didn't. Cover art isn't mine.

Six years ago, a strange craft fell from the sky. The creature that fell with it has been living secretly as a pony in Ponyville ever since, unaware of its true nature.

Now, six years later, Big Macintosh has disappeared, and the creature from the sky is the only one who can save him. The secret must be unveiled, no matter the cost.

A Doctor Who universe crossover fic.

My first (non-terrible) fic, so tips would be great.

Suggestion on categories would be appreciated as well, as I'm not really sure how it works.

The Doctor, in a strange accident has found himself a pony in Equestria. But from there things only get stranger, with Equestria's past as his future the Doctor finds himself in a relationship with Luna, trying (unsuccessfully) to stop Pinkie from creating Paradoxes, and trying to survive the onslaught of monsters from Equestria, aliens following him through the Void, and Princess Celestia herself! Will the Doctor survive? Will he unravel the mystery of his future involvement in Equestria's past? And will Pinkie ever learn that the laws of physics exist for a reason? Find out in 'Vortexes are Magic'
-Cover art by me (Not my best work, but I'm proud)

Despite learning of the Equastria's doom from a prophet, Princess Celestria trusts her faithful student more, so when danger lurks, she puts her faith in Twilight Sparkle rather then an old ally. Will this be a mistake of the Princess, will the prophet change the future as he wishes, or will Twilight prove him wrong?

(9/10 Equestrian Critics Society)
Erebus:
The Sun and Moon no longer shine over the alabaster walls of Canterlot. A darkness long forgotten has begun to seep through the cracks and erode the morality of those it touches. But at the edge of the light there is shadow, holding back the darkness

Episode 1: Surprise! Surprise! Surprise!
The Royal Sister Music Hall is reopening after being closed for renovations for almost two years. Everypony whose anypony will be there, including two ponies who haven't shown their faces in Canterlot for nearly a decade. Some scars can be painful no matter how old... others can be down right deadly.

Many thanks to those who helped:
Ponky for helping with the characters, inspiration, and editing.
Steel Wing for editing my mess of words.
Saddlesoapopera for more help with characters
Doomande For constantly putting up with me.
Eventorizon For more help Pre-reading

Awesome art by: Rattlesire

*Takes place a bit after Keep Calm and Flutter On*

After she had successfully reformed Discord, Fluttershy decides that he needs more friends to keep him better occupied, and also to make sure he stays good. Of course that friend would have to be as energetic as him, have at least a couple things in common as far as likes go, and be willing to take any and all craziness he's willing to dish out. Naturally, the first name to come to mind was Pinkie Pie.

At first, to Fluttershy, things seem to be going over quite smoothly. Pinkie Pie and Discord are getting along swimmingly; Pinkie Pie and Discord are at agreement's, and Pinkie Pie always seems to keep him in check, and best of all, all three form a strong friendship with each other.

However, before Fluttershy can go to any of her other friends about the good news, Fluttershy discovers a little secret between the two, that she now has to keep. That is, if she wants all of her friendships to stay afloat.

((Roughly based off of a continuing RP between myself and KiaraKovu123 as well as the cover image, which was the last panel of the beautiful DisPie comic drawn by rrred on DA... Seriously... Check her stuff out. It's simply gorgeous, darling!))

The Doctor falls through a glitch in time and space, and meets Ditzy Doo, who accompanies him on his journey to find a missing Tardis piece, which has been stoled by a mysterious enemy ...

EDIT: My writer's block has broken, and the story is back on track!
Huge thanks to Megakyle777, who suggested my villain's Cutie Mark, which I've modified a bit since.

EDIT2: Fixed some things in Chapter 2. Not spelling errors per se, more like things that didn't carry the meaning I wanted them to.

When Doctor Whooves first arrives in Ponyville, he isn't alone. He's chasing after a being known as the Shadowed One. As the Doctor runs through the Everfree forest, he is stung by one of the deadliest creatures of all: the manticore. He learns that he has five days to live, before the incurable poison forces him to regenerate- with a fifty percent chance he won't survive the process. He now has five days to locate and stop the malicious Shadowed One before Ponyville, no, all of Equestria, is doomed. And with the locals not exactly being their friendliest due to the changeling scare, who knows what could happen?

Also, the picture has nothing to do with the story. I just felt like it was too much to resist.

Despite Pinkie Pie priding herself as friend to everypony in Ponyville, she's never seen eye-to-eye with the matriarch of the new family across the way. But her resentment towards the party-pooping Polly T. Burro turns into outright paranoia when the donkey lets slip she knows one of Pinkie's secrets. But how could she? Only four ponies, Applejack, Rainbow Dash, Fluttershy, and Rarity were there for the incident in question, and Pinkie Pinkie-Promised them all to secrecy.

She comes to the conclusion that one of her friends is telling tales. Christening herself 'Smiles' to conceal her identity, she'll have to rely on the help of her erstwhile assistant 'Mr. Gummy-yum' and reluctant librarian Twilight Sparkle to root out whoever's betraying her confidence before her deepest, darkest secret is revealed. But as the tangled web of deceit she's weaving gets stickier and sticker, will Pinkie be able to keep herself from getting permanently stuck out in the cold?