Time after time, through chaos and through wars, Princess Celestia prevailed.

Of all the terrible forces she could have fallen to, Flim Flam Industry was the last one anypony had expected.

With thanks to gardrek for editing (3-6) and PinkieDP, Ice Star, and Odd_Sarge for prereading help.

This story is a sequel to The Monster in the Twilight

Now that Luna has returned to the throne, and the aftermath of her brief appearance as Nightmare Moon is being cleaned up, the story is over. Right?

Not quite.

Twilight Sparkle had nearly been destroyed in the chaos of Nightmare Moon’s return, but now with the assistance of her five friends, she is facing a fascinating new world filled with wonderful things. No longer the scarred monster who nearly destroyed Canterlot and raged through the Everfree Forest for over a decade, now she has been healed by the Elements of Harmony and is living at the edge of town with her adoptive mother Zecora. Not all the fears of her past can be left behind that easily though, and now she must face the consequences of her actions as she faces the most daunting challenge of her life.

Ponyville.

Letters is a sequel to the alternate universe story The Monster in the Twilight. In this story, Twilight Sparkle exchanges letters with Princess Luna, two ponies with a common problem of fitting in and making friends after the destruction of Nightmare Moon.

Normally I would try to talk you into reading the sequel even if you haven’t read the original story, but in this case, you’ll probably be more confused than entertained. But go ahead. I don’t mind if you don’t read the first story. You’ll never find out what an Urlock is, but that’s fine. It’s your funeral.

Editing Assistance by Alicorn Priest, Peter and Tek

Credit for the incredible picture All Night Study Group goes to Bibliodragon at Deviantart

Physical books are available on Lulu.com (up to Chapter 82)
Letters From a Little Princess Monster (Paperback) 726 pages
Letters From a Little Princess Monster (Massive Hardback) 780 pages

We all know the story of how the Princess’ young student and five friends defeated Nightmare Moon and brought Princess Luna back to our lands. But what if the tale were false? What if the young Twilight Sparkle on the event of her entrance exam had not been rescued by Princess Celestia, but instead lost her mind among the power of her youthful surge and had to be sent away, far away before she could destroy all of Canterlot with her newfound power. Now the feral unicorn prowling the Everfree Forest only vaguely remembers her past, slipping away from constant terrifying attempts to capture her.

And she is beginning to remember what true power felt like.

Editors include: Peter, Justin, Featherprop, Mitch H, and Bad Horse
Featured on Equestria Daily
Reviewed by Chris on One Man's Pony Ramblings and by Paul Asaran on his review blog
Now with a TV Tropes page

Physical books are available on Lulu.com
Monster in the Twilight (Paperback) 272 pages
Monster in the Twilight (Hardback)

My name is Starswirl and I am an earth pony. This is a collection of stories about my life. As I reflect on the events that have brought me to this home by the sea, I can only hope for one thing; that my life be viewed as ordinary and plain, but my work in theoretical magic be held the highest regard. I placed so much effort into my studies in theoretical magic that it would be a shame to let my work be lost somewhere in the sands of time.

As seen on Equestria Daily!

updates whenever I get a chance to update it :P.

There once was a story about the beautiful dark alicorn who moved the moon. In the tranquil countryside, a young boy listened to the story, looked at the stars, and imagined. He grew up and fell in love with the ruler of the night … and she loved him, too.

It was perfect, except for one nagging doubt in the back of the quiet boy's head: she was a character from a children's story.

Winner of the Writeoff Association's "Written In The Stars" competition! ** Featured on Equestria Daily ** Featured by The Royal Guard (twice! )

Rated ★★★★★ by Louder Yay! "This is, perhaps, a Lucky Dreams story for grown-ups. ... Plenty of magic and friendship here, but also sadness and loss ... a clear classic."

Highly Recommended by Present Perfect! "An excellently written story about an emotional encounter between the titular characters … yet a good bit more than that. If you like reading, you will like reading this."

Recommended by Titanium Dragon! "This story had an excellent style to it, a sort of fairy-tale-like quality … really, this is a work of original fiction which pokes at MLP in only the barest of ways. But that doesn't mean it isn't relevant to your interests."

Art: Assembled by me. Luna vector by azur-wing.

One beautiful morning, Twilight Sparkle decides she wants a free salad. After a small amount of theft, assault, battery, and arson, she sits down to enjoy what is sure to be the best tasting salad ever.

...Or she would have, if it weren’t for the Equestrian Intelligence Service locking her up as a potential threat to national security. Now, Twilight must escape a maximum security holding facility hidden deep underneath Canterlot. And to do it, she’ll need a paperclip, a spymare catsuit, an escape plan, and an alliance with the dastardly Drakbog, King of Frogs.

It's been over a year since the 'Baked Bads' incident, and nopony trusts Sugarcube Corner's Muffins anymore. As a result, The Cakes have decided it's time to stop making muffins. However, When Pinkie Pie Insults the name of muffins in front of Ditzy 'Derpy Hooves' Doo, The wall-eyed pegasus sets up her own bakery. Now the race is on to see who's product is the most popular, with both of their livelihoods on the line!

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