It is the year 2038, and the Earth is slowly being consumed by a space-borne monstrosity dubbed the Black Tide, which is using nanotechnology to remake the planet into something hideously alien.

Erin Olsen works for Project Harmonics, humanity's last-ditch effort to find a new world before the Tide can wipe them out. But when that world is found, and it turns out to be occupied, Erin will need to find the courage to face the unknown in order to save the inhabitants of both worlds.

(Many thanks to Easteu for the fantastic cover image for this story!)

Now with its own TV Tropes page

There is now a follow-up to this story: Sunflower - Side Projects
Sequel: Project Sunflower: Harmony

She’s the loyalest of friends and most dependable of ponies; how could anypony not fall in love with Applejack? In fact, so much of the town has found themselves under her seductive spell, they’ve formed a secret society to help each other cope with their unbridled lust. Operating in seclusion, this group has been an unseen staple of Ponyville. Surely, though, nothing good can come of the mare herself discovering the existence of Applejack Anonymous.

Cover pic by the inimitable Mr. Snowpony.

King Sombra’s dark influence was obliterated by the Crystal Heart, and the villain is well and truly dead. But when he attempts to steal the afterlife of an innocent victim, a human spirit is left hurtling towards Equestria, where this unfortunate soul is revived into the only vessel available: the reconstituted body of King Sombra himself.

Thus, a cheerfully oblivious alien is crammed into the form of the most evil and malicious being Equestria has ever known. Not that Shining Armor and Cadence know this, of course. As far as they are concerned, the King is back and he’s lost his fricking mind.

Click here for the TV Tropes page!

A pianist from Earth is home on a lonely Saturday, getting ready to enjoy his weekend, when he is suddenly summoned to Equestria - only to find himself being held captive by The Great and Powerful Trixie, who plans to use him as a piano-playing slave in her show.

If you came here looking for the sequel, 'The Piano Man: Act II', it can be found here.

A freak lightning storm, strange lights, and an unassuming, yet mysterious stone obelisk. What do these things have to do with an average college student from North Tonawanda? At first, nothing. But when nineteen year-old Connor lets his curiosity get the better of him and lands in the center of a cosmic coincidence, he probably should have left well enough alone.

Now he finds himself stranded in an impossible world where magic is real, and "normal" takes on a whole new meaning. A world populated by sentient creatures calling themselves "ponies." A stranger in a strange land, Connor's yearning for answers and a way back to Earth will try both his patience and his sanity in the days following his arrival, even with the support of his new equine friends. But as he witnesses his life slowly spiral out of control, he will call into question his definition of home, humanity, destiny, and what it means to truly belong.

Rated Teen just in case for occasional swearing. This story takes place shortly after the end of Season 2, and the main character is from an Earth where MLP never existed (in order to preserve proper characterization). Or just assume he's never heard of it, that works too.

The title is not an Evangelion reference, I was just inspired by the wording scheme.

Instead of being killed in the cold Antarctic by Dr. Manhattan, Rorschach finds himself rematerialized in a strange new, pony filled world. He finds himself drawn into the lives of the ponies of Ponyville but some ponies fear that this sociopath will bring danger and darkness to an otherwise peaceful existence. Will the mane 6 help Walter Kovac find peace within himself or will he bring them all down with him in his cold views of reality and existence?

As Seen on Equestria Daily!
And our TvTropes page (By Crowrob0t): http://tvtropes.org/pmwiki/pmwiki.php/Fanfic/RorschachInEquestria

My Little Pony: Friendship is Magic and its likeness is owned by Hasbro Studios. Rorschach and Watchmen are owned by DC comics. All rights go to their normal original, intended owners.

* Voted Twice as the #1 Comedy FanFic on Equestria Daily *

Well, what can I say? This is the story of a man. Or maybe he was... a pony-man. Or maybe he was just a... Pony! But he was still...

FIREWAAAAAAAALLLL!!!!

... Yeah, this is that story. The story where a guy goes to a party and wakes up in Ponyville. That guy (I know him as 'me') seems to have landed in his own personal little heaven. Hell, I even brought me a pack of endless cigarettes. How does that not kick all kinds of flank?

So yeah, everything was awesome. The End.

Well, except for The Nightmare. And Trixie. And some jerk named David. Then there was that Azure Flora pony. And that skank princess that steals my goddamn phone!

Listen, summaries just... They just don't cut it. If you want the story, it's provided right here.

Just a warning. I use cusswords like a big boy.

ALSO LUNA IS NOTHING BUT A GODDAMN TROLL!

Celestia likes her routine. Tax reforms, grants, laws and construction projects are all a princess needs to be content.

It's just her luck that for Pinkie Pie, "content" is not nearly enough.

Luna has had enough of Celestia's games, and has found the perfect means of revenge. Using a long-forbidden spell, she transforms her sister into little more than a small filly, all so she could pull the greatest prank ever. Unfortunately, she soon learns that before you fool around with dangerous magic, you really need to read the fine print...

A sequel can be found here.

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?