Now with an audio drama produced by truesailorcomet, as well as TVTropes page!

Princess Luna takes on a Night Apprentice, her counterpart to Princess Celestia's Faithful Student, Twilight Sparkle. Nova Shine, a wandering unicorn from Canterlot, is given the position for the first time in a thousand years. What neither of them know is that there exists a long and secret history between the positions of the Faithful Student, the Night Apprentice, and a mysterious shadow that seems to keep popping up in Nova's and Twilight's dreams. This shadow, whatever it is, and the dreams it appears in do not bode well, but the Princesses remain tight-lipped about these nightmares.

Nova and Twilight agree to investigate the nightmares themselves, and this mission occupies them for some time. But as they continue their search, their relationship starts to develop into something more than just fellow students. As if to make matters any more chaotic, Trixie Lulamoon arrives on Twilight's doorstep announcing that she, too, has been dealing with nightmare problems.

Finally, there's also the shadow itself. An ancient and dangerous enemy, it has lain dormant for the last thousand or so years. Why it chooses to reveal itself now is anyone's best guess, but unless Twilight and Nova can stop it, there's no telling what will happen to Equestria...

First featured under the old system on 25 November 2013, with occasional reappearances in the new system.
Featured again on 19 November 2022, on its 10th anniversary, and again on 19 November 2023 when the final chapter of the rewrite was published. Many thanks, everyone.

This is a fic based on the Time Loop Files, the format of which was first codified by Innortal on fanfiction.net.
Here's a brief guide.
The basic idea is, one character (the Anchor, usually the main character of a fictional setting) is looping back to the very first moments of their parent series every time either they die or some kind of time limit expires. They of course end up monumentally stir crazy given enough time.
Eventually others start to loop as well.
The reset is not always perfect. Sometimes a loop's history will be different to the "prime" loop, or canonical plot.
"Crossover" or "Fusion" loops also occur, randomly. These can involve the home loopers having a guest, or the anchor for one universe spending time in another, or replacements of one character by another.
Vacation Loops are where the Anchor (or others) decide/s "buck it" and lets off steam by doing whatever comes to mind. There's little or no attempt to maintain the original timeline.

In addition, and particularly more recently, it should be known that this story has a collaborative element to it - people may submit loop ideas or loops, ideally at the Spacebattles thread (a link to the current version of which is on the Trope page), and they may become included.

There's two page image options, thanks to Filraen - the current page image has been edited by the original creator from this work of theirs.. The other one is here:
http://hourglass-vectors.deviantart.com/art/MLP-Loops-466030169

This story is a sequel to Drawn With the Night Into the Day

Dipper Doodle and Thunder Evening arrive in Canterlot, do I even need to say Chaos Ensues?

They are Fancy's kids after all.

This story is a sequel to Drawn With the Night

Sequel to Drawn With the Night. Fancy Thunder and a small team go to Canterlot to fulfill a commission.
She decided to ask a few 'innocent' questions and toss a few stones in the placid waters to see what is stirred up. Specifically, how will the Princesses react to a pony who doesn't need them, and thus doesn't worship them?

A TV Tropes page

A human finds himself in Equestria under very unpleasant circumstances with no explanation.
His reaction: get the heck out of Dodge and start a new life where Equestria and her ponies can't reach him.
But an alicorn's reach is long and the events which brought him here and his treatment in Canterlot are not so easily forgotten by those who did it. How does one say 'go away' to an immortal goddess?

Yay! Featured, thank you all.
A TV Tropes page
Revised 08/31/14 for clarity and grammatical issues, no events changed. I am working on a sequel, but it will be from Fancy's POV.
P.S. Green is NOT Lyra. There are other green unicorns.

Greetings weary traveler/bored reader. Let me regale you with my tale. The tale of a mere mortal, with nothing particularly special to his name, brought to a magical land of dragons, minotaurs, griffins, and of course ponies. But he came as no mere human. He came as the epic warrior, the manliest of swordsmen, that most dashing of multiverse travelers, the mighty Gilgamesh! What adventures will this powerful and magnificent warrior find in his travels? HELL IF I KNOW! LET'S STRAP IN AND SEE WHERE THIS GOES!

Looking for cover art if anyone's interested.

Crossovers with:
The life and times of Xante, Baron of the Frozen Wastelands, First among Liches, Lord of the Dead, and Fabulous Rainbow Magic User

Golden Graces, Headless Headaches

I Will Hunt You Down

A Thousand Tortured Souls Scream My Name

Gravity of the Situation

Land of Friendship and Magic

And Then There Were 10… Er… 67

Son of Invention

Ten Against One

Time Ticks On

Let's Just Say That Umbra Really Needs to Put a Lock On His Diary

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May 25, 2014: I GOT FEATURED! HOLY CRAP THANK YOU SO MUCH!

This story is a sequel to Principal Celestia Hunts the Undead

“Look, I know Mom and Aunt Luna said I shouldn’t work ‘the business’ without them. And I know they’re right – college will be hard enough without battling the hungry dead. But people out there need a bad-ass monster hunter to save them, and that’s what I’ll be.”

“Just don’t tell Mom. You know how she gets.”

(Slice-of-life adventures of Canterlot College's rookie band of monster hunters.)

Now with a Tropes page, courtesy of AnoneMouseJr.

And check out this fan art!