After Big Macintosh helps the Mane Six out of a jam, he finds his ordinary life of
peaceful routine thoroughly disrupted by the various misadventures those crazy
ponies always seem to get themselves into.

Artwork provided by the talented Zemious

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.

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You're just an ordinary guy, living an ordinary life. But your life changes one miserable Monday, when you arrive home to find an unexpected visitor in your house: specifically, you discover Twilight Sparkle in your bed.

Things go downhill fast.

And she's just your first visitor.

Tags and contributing authors will be added as needed. A couple new chapters will be added daily until the well runs dry. Continuity is overrated, so don't complain about it. It's a thematic collab, not a big budget Hollywood movie where there are never any continuity errors.
Do you want to join? Click here!

After a tragic accident, a human ends up in Lord Tirek's body, as part of an attempt to reform the villain after his recent escapades. While the hero of our tale is trying to make sense of his new surroundings, the rest of Equestria thinks that the most terrible threat that their world has ever seen is back...
And the powers that be are definitely not happy about it.
New Cover Art By Shadow Bolt

Twilight has been having her study sessions with the Cutie Mark Crusaders for some time, and has been remarkably pleased with their progress. And kind of worried, as they keep getting better and better. She might be a princess now, but TEACHING THE CUTIE MARK CRUSADERS? She'd rather not become their formal mentor. Yet.

A letter is sent out, and Princess Celestia gets a call for help. And, an opportunity is born. After all, why not? After a thousand years, perhaps it is time to do something else, just for a bit. She does have a rather wonderful younger sister who hasn't been ruling a land for a thousand years, and who has been studying how to rule for the past four rather intensely. So, teaching three fillies undercover? Sounds like fun.

And Luna. She's wanted to be as respected as her sister so much that she once went mad over it. But now, she's simply being handed the power that she once coveted for so long and no longer wants. What kind of a world does she live in now that her highest desire has been so casually granted?

With all of this, What Could Possibly Go Wrong?

Arcs:

Escape: When Celestia hears the call, she jumps at the chance to teach again, especially three fillies who might surpass her grandest student. But first she's got to escape her own identity...
Examination: So you want to find out what a filly does? Time to test her silly, so long as you don't taunt the Happy-Fun Filly.
Excitement: So, you've found the Happy-Fun Filly. Great, but the other two need help as well, and Scootaloo has this ~Great!~ idea for how to use her new-found magic...
Encouragement: Cometh the Bubbles, and a whole load of new headaches as they find out just what being a Happy-Fun Filly really means...
Exaltation: Where's Luna been this whole time? She can't be very happy about being left in the lurch holding Equestria. She could really use somepony to talk to.
Exercise: 'Sunbeam' is looking to teach the Happy-Fun Filly more, but first she needs to start taking care of the wagon-tire she keeps around her middle so that certain Unfun-Time Fillies don't interrupt her. And there's this big draft stallion looking for help...

The "what-if" sequel has arrived -- Equinophobia: Silvery Lies.

"Equinophobia is a psychological fear of horses"
Sometimes you're lucky, and sometimes you're unlucky. Ryan finds herself the latter as she ends up in a world of sunshine, rainbows, and pure horror.

A story of an out-of-place person learning to adapt to their new environment.

Alternate Universe tag for lack of or changes in Equestria Girls elements and the Crystal Empire's history.

Written as the A-side to A Chromatic Scale. The stories are not related otherwise and can be read separately.

When David volunteered to be part of a cryogenic experiment he thought he'd be at the forefront of human technology, spearheading research and development.

Unfortunately politics doesn't work that way.

Lucky for him, the science was solid... For ten thousand years.

AN: Don't take this seriously. Seriously don't. I don't.

Special thanks to my editor: Thornwing!

A-d-d-ditional Tags: Science Fiction, Parody, Waking Up In the Future, Equestria used to be Earth, Parity Bits, Things That Could Be Considered Irrelevant To The Premise And Is Only Used As Humour, Twi-bright, Kangaroos, Towels and Brawndo.

Rated teen for inappropriate scenarios. Well, lots of inappropriate scenarios. Now with 20% more Dark!

List of Side Stories:

The Story of the Equinos and Celestia
Twilight's Report
A Butterfly Bash
The Very Hungry Caterpillar

Unpublished Stories now available here.

I'll also keep the former list I made here:

The Story of the Gorlians and Equestria
Human Manual I
Equine Manual I
Why Emergencies Should Be Handled Calmly
Why Emergencies Should Be Handled Calmly II
Blue Pill
David's Nightmares
Robot Manticore Attack
The First Law
Discordant
A Dated Journal Entry
McQuestria
McQuestria II
To Touch The Stars

Lyra, a simple pony with simple dreams. Dreams involving aliens, that is. Her fascination with them even got her a job dealing with them, though no one takes it seriously. Lyra hopes to one day be able to meet one, she just needs to believe.

In comes a human, whom mysteriously gets transported to Equestria. It's up to Lyra to show the alien the ways of her people! The power of friendship, magic, and hugs await her on this strange adventure.

Ahuizotl threatens to sue A. K. Yearling for libel unless she stops writing the Daring Do books. She makes him a counter-offer.

Based on the November 2014 prompt from The Writeoff Association, "Title Drop," the original version of this story won second place in that month's contest.

A changeling gets a very risky and clever idea.
Pretending to be an advanced magic doll left as an anonymous gift in front of Twilight Sparkle's home.
It's so audaciously stupid there is no way it's not going to work.