Fourteen authors, one story. I foresee precisely zero problems.

This is the culmination of a round-robin event in which a whole bunch of neato folks whose words you may have read before wrote a chapter each in one big story, with the proviso that they were only allowed to see the preceding chapter. This was totally a cool idea, like, a year ago.

This is the story that they wrote, and these are the people who wrote it:

Arcainum
Blueshift
Zay-el
Alexstrazsa
Ninestempest
Lucky Dreams
Obselescence
Whatever Rusty's Fimfic Name Is
Ponydora Prancypants
Cold in Gardez
Eakin
Wanderer D
Dawn Scroll
Pen Stroke

There are no elephants.

When a human’s house crash lands on the outskirts of Ponyville, nopony is quite sure how to react to this strange creature. With seemingly no way to return home to his own world, one young man must adjust to this strange new world, and the world must adjust to him.

Starts between Fall Weather Friends and Suited for Success.

This story is a sequel to The Code's Apprentice

Sequel To : The Code's Apprentice

The land of Equestria has been changed forever.

New monarchs sit upon the thrones of the Sun and Moon, the once almighty power of Harmony overturned to make way for a new Diarchy of Balance. Political unrest and turmoil have engulfed the land, and at the very center of it all, Princess Celestia - renamed Tia Sunbeam - seeks atonement for the crimes she committed in the name of Eternal Harmony.

With much of her power sealed away, Tia must live amidst the citizens of Ponyville as the world changes all around them. As Ponyville works to rebuild following the struggle between student and teacher, they must cope with the edicts of a new government determined to bring equality to all creatures, beliefs, and ways of life - even those that were long since banished to the dark places of the world.

Tia Sunbeam will struggle with her own deeply held convictions on the way the world should be, versus the way it will now become. She will face a truth she has long since denied, and realize the true meaning of Harmony. And perhaps, most importantly of all... She must make some Friends.

Cover art by SinSays at http://sinsays.tumblr.com/ - Go spend some money with her! :D
Oh, and go check out my new side story - Rise - It's going to become relevant here!
(character tags are not comprehensive! Some are being kept secret! ;3)

For a thousand years, the Code of Harmony has ruled Equestria, and the Code of Dissonance has sabotaged its works at every turn. Now the war for control over the land will come to a head, and one unicorn's decision may decide the fate of all.

For though she does not know it, Twilight Sparkle is the shining example of the Code of Harmony. Her teacher, Princess Celestia is Harmony's most powerful master and she knows her enemies are hatching a plan that threatens to cast down the Harmony of her throne and all she has sacrificed to create.

What she does not know is her foe seeks a new Apprentice to turn to his dark ways. A unicorn with seemingly limitless potential for magic, whose thirst for knowledge may yet lead her down a dark path, who is known to be such a faithful student of magic, eagerly seeking the truth no matter how forbidden it might be...

Sequel: Code of Harmony

Princess Celestia always knew that Twilight Sparkle was destined for great things, but she never revealed the source of that knowledge, not even to those closest to her. When the day of Twilight's true destiny finally arrives, can Celestia fulfill an ancient promise to save Equestia's past, present, and future, even it means saying goodbye to Twilight forever? How can Celestia refuse her mother's last wish?

Art by the inimitable Harwick

Scootaloo missed out on being adopted. Again.

Or did she?

A surprise visit shows Scootaloo that parents can come in all shapes and forms. They can be cute and cuddly and pony-like... or they can be Muay Thai Deathgods. Either way, she's bound to have fun.

Warning: Random. Trigger Word: Random. Do not read if not like: Random.
Warning 2: Might contain an actual plot. No promises.

When Scootaloo moves to Ponyville, she meets a certain cyan pegasus who becomes her idol. Things go well until a pivotal event causes her hopes and dreams to come crashing down around her. Broken and betrayed, Scootaloo must learn to accept her reality and embrace her inner strength with the help of her father and two best friends.

[Now with a super awesome reading by Neighrator Pony.]
[This story's sequel can be found here.]

My name was once Lulamoon. But that was over a thousand years ago.

Written in 24 hours for Equestria Daily's Flashfic Event

SF (canon species only; no humans) Ponies were magically and genetically engineered to be the perfect servitor race. They are powerful, adaptable, intelligent and completely under the control of their creators. A laboratory accident frees one such pony from her mental chains, but how can one mare save herself and the rest of her kind if she doesn't even know she's a slave?
This is not the Equestria you know and these are not your little ponies... not yet, anyway.

Tags: Adventure, Diamond Dogs, Gryphons, NO HUMANS (did I mention that already?)
Other tags: historical, mind control, Clarke's 3rd Law, excessive use of high energy physics, before they were famous.
Detailed review by PaulAsaran.
Cover art by endrome , used with permission.
Russian translation (partial -- 'unofficially' completed in the comments)
A Soot-Covered World, book 1.

CURRENTLY PUBLISHING PHYSICAL COPIES, UNTIL THE 25th OF SEPTEMBER: http://igg.me/at/InnerGloryFinalFund

After doing some research into the history of Alicorns, Twilight finds a dead end. When she chooses to pursue it against Celestia's wishes, she finds herself entangled in a messy history that some want forgotten. An Alicorn's position comes with sacrifice. And when given power, one will always be in want of more...

A complicated explanation for the history and intricacies of the My Little Pony universe. If you're reading this, be ready for the long haul.

A rewrite, or rather, the heavily revised and actually worth reading version of The Struggle for Power, my earlier work. Think of that as an alpha build, and this as the "released-to-the-public" program.
http://www.equestriadaily.com/2011/05/story-struggle-for-power.html