Canterlot... For centuries, Canterlot was the shining gem of Equestria, the pinnacle of pony society. Now, it’s a reminder, a bleak and monolithic warning to the world. 

Changed by the chemical and technological poisons that plague the mountain, an abomination of nature, I wander the greatest disaster Equestria has ever seen. 

... I will escape eventually, and when I do, I hope my friends still see me as Twilight Sparkle, and not the monster that hides among the ruins. 

Robert Parker is a 24 year old ex-web developer living in New York city. In the wake of the conversion movement, he has seemingly lost everything. Haunted by the same nightmare every night, he soon realizes that he must make a choice.

To those unfamiliar with the Conversion Bureau: it is a scenario created by an author named blaze in which Ponies either appear in the human world or have lived beside humans without incident for millennia. One day, in the face of all the damage humanity has done to its world, the ponies offer a solution: undergo conversion to become a pony and allow the world to be inundated with Equestria's influence: thus healing it and bring forth a golden age.

Many different authors have taken many different approaches to this idea, all of them are worth checking out.

http://www.ponychan.net/chan/fic/res/53616.html (The current thread)
http://www.equestriadaily.com/2011/04/conversion-bureau-compilation.html (The compilation post on EQDaily. *NOT UPDATED*)

[Second person fiction between you and Luna]This story is a more realistic take on a pony X royal sister fiction in the sense of how it would actually happen. After a spell cast by Princess Celestia goes awry.....you, a simple brony, have been sent directly to Equestria. No, no instant cutie marks or instant shipping is in this fiction. Trust me, I know what I'm doing. However, if you don't like human in Equestria stories OR steamy scenes, then stay away from this fiction. Simple as that.

Twilight has always had feelings for Celestia. But whether these feelings are for her surrogate mother or for her imagined lover, nopony knows. It will take something strange to make her understand just what she thinks of the Princess; something like her conscience becoming sentient.

When the Elements of Harmony defeated Discord, they did their job too well, and completely undid all of the things Discord directly did...

... Like send a subcontinent from earth into a pocket dimension so he could focus properly on his toys. And now Equestria has appeared on Earth.

Yet, neither side was completely ignorant of the other. On Earth, there was the show "My Little Pony: Friendship is Magic" and in Equestria there was the ever popular movie serial "The Dark World: Technology is Courage" which was a favorite of colts everywhere as well as the "Pumans".

And now both sides learn through an event that the other is real. Come join us as we watch as both sides learn to work and live together. And as they find out that events on their respective fiction was not as nice as it seemed as we widen the lenses of the view points...

A Round Robin created on SpaceBattles of which I am a participant and am posting with all their permission.

Have you ever had a dream that just seemed so real, that it was impossible to say for certain that it was even a dream at all? A dream that, despite all of its impossibilities, seemed to re-write your entire perception of reality, re-writing your sense of what—and indeed, who—you are? Accepting change is hard enough as it is. But when you're a somebody who wakes up as a somepony, how do you cope with the impact such a drastic change has on your mind and body? With changes like these, it must surely just be a lucid dream—albeit a suspiciously accurate one—just brimming with potential and ripe for exploration. So you might as well suck it up and make the most of these distressingly…unusual circumstances, and seize this psychological adventure before you wake up and the dream ends.
After all, this couldn't possibly be real, so the dream must come to an end eventually…right?

After a mishap with a falling star, Princess Luna crashes into Ponyville, only to be saved by Big Macintosh. Overly grateful, Luna calls upon an ancient contract which binds her to the draft pony as his personal servant. Can Big Macintosh co-exist with an overzealous moon goddess, her creepy assistant, and an army of evil looking guards long enough for Twilight to find a loophole to get him out of the pact?

Featured on 9/5/2012

This story is a sequel to Equestria's Crazies

Part of the Equestria's Crazies Universe

It has been over two hundred years since Discord, the god of chaos, and Nightmare Moon - or Pleasant Dreams as she's now known as - bringer of eternal night, were released from their prisons. Surprisingly, everything went better than expected; they have become successful co-rulers of Equestria. But that's not the shocking part. Twelve years ago, they had a child; Lucid Dream, a Draconequus filly with the powers of a god at her disposal. She'll be driving everybody up the walls, though she'll have to be careful; her aunt Princess Celestia has eyes everywhere and her teacher knows all the tricks of the trade. But Dream has many friends, and whether or not her parents want her to, she's going to she's going to be stirring up quite a bit of chaos.

Because sometimes Equestria is just crazy.

[[On HIATUS temporarily awaiting completion of another story, then a partial re-write]]
To save Humanity, would you be willing to bring about its end?
To preserve lives, is it viable to alter them so deeply?

See how it all began;
The Bureaus, the PER, the HLF...

This is not your granddaddy's Conversion Bureau.
Welcome to a TCB world where Equestrians aren’t high-hoofed moralists, but merely a species offering us friendship and an escape in time of need.

A world where humanity isn’t entirely a race of misanthropic proto-apes bent on ruining the planet, but a proud species, with a history of successes and failures both, who’s luck simply ran out.

A world where we haven’t completely given up on our other options.
Where the PER become more aggressive, more well equipped, and more well led.
Where the HLF rise to the cusp of gaining access to WMDs.

Where, one day, Ponies won’t be the only option.

But for now, they are the Threshold of a new era.

This is the prequel to Option Gamma.
It explores the inception of my take on the TCB universe.
(Option Gamma may be read before this (which will result in some very mild partial spoilers), or after. Either should be enjoyable. I hope.)

As Twilight Sparkle awoke one morning from uneasy dreams, she found she had been turned into a changeling.

How has she become a changeling? How will she adapt? How will her friends respond? And what new terrors will her metamorphosis bring?

Cover image by the fantastic Carnifex... or Siansaar... I can't tell which. You can find more wonderful works here: http://siansaar.deviantart.com/

EDIT: Featured... nearing 1000 Favorites... multiple pages of comments (swoons)

Thanks for everything guys. I never expected this thing to get so popular. I need to rework the second chapter, but it looks like there's going to be a blue moon every Friday for a while yet. Thanks again for your support and please keep reading and reviewing!

EDIT2: I've updated the character list again, a little preview of the second story arc...

EDIT 3: Just doing a quick character update to account for changes made to the next Arc...