Twilight Sparkle uses a teleport spell and goes into the future. It works.

Coverart by: 2snacks

Now has a dramatic reading by Goombasa
Also exists IN SPANISH now thanks to SPANIARD KIWI

Dante Thomas was a normal Marine. He fought like a demon and cursed like a drunken sailor in the Mojave dessert. How will a person trained to kill, survive in a world of prissy Technicolor ponies? The good thing is, he probably won't have to. After finding a secret in the Everfree that will turn the entire world upside down.

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Now with a discussion blog. And a dramatic reading, by the awesome Dropbear271 Possible spoilers.

Have you ever woken up as a vegetarian cartoon pony? I have, and she won’t shut up about it. I’m stuck in her body as our minds swap control and our memories blur. I can’t seem to do anything right, and it’s even worse when she’s in charge.

Now, we’re in a back and forth war for control of her body. I just want to eat meat again, and have a little personal space. She’s convinced I’m hitting on her friends and trying to score. I’m not sure I can survive the rest of the day, let alone until we fix this.

Edits by: Selbi, Abcron, Breath of Plagues, Refro, Jaestring, The Parasprite, Starbound Gurren
Pre-read by: SkeeterTL, Solidfire, Penjacker, TypewriterError, Pearple Prose
(It took all of them to corral my insanity.)
Cover art by Tsitra360
V1.1-Rated teen sex for strong innuendo.
V1.2-Pinkie Pie now enforcing RIAA guidelines.

After discovering that Cadence is not who she appears to be, Twilight is sent to another world entirely by the disguised Changeling Queen to avoid her plan being disrupted.
When Twilight lands, she discovers that not only have Spike, Owlowiscious and Peewee followed her, but that they've arrived in a world where the main sentient species is human.
There's still a place where they teach magic, though.
Crossover with Harry Potter. Twilight will be effectively taking the role of Hermione.

I've marked this story as cancelled to reflect the unlikelihood of it continuing. If I do come back to it I'll revert that.

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?

After being crowned Twilight finds out that she has become a unwilling player in the millenia old powerstruggle of the noble houses. Learning in a quite blunt way that she has to take on a consort. Simply because of a law that states that there must be a royal consort atleast once every 300 years. And not only that, but also that the only nobles themselves can select those of which she can choose them from.
With a ruse she seemed to get a decent choice. However, how will life turn out for the bookish scholar when it turned out that her new bride has been the comfort mare of a spoiled brat ever since getting her cutiemark? And almost equally important. How will the noble react to a 5P:
a pretty pissed purple pony princess?

Coverart by: G_Haze