Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

Dear Princess Celestia,

I'm sorry I haven't written in a while. Things seem to be falling through the cracks lately. Spike thinks I should go see the doctor, but...

Frost Windchill is known to be a storyteller of sorts. Comfortable with telling the occasional sprite tale or legend, a child approaches him one day and asks for a real story.

And so Frost tells one- the story of his life. It's not a typical story, and there's more to it- just as there's more to the descendant of a Lunar Guard. It's a story not just of himself but the heroes he stood beside- big and small, legendary and obscure. But there's something amiss, buried lies between the lines.

After all, it's hard to kill memories when you remember everything.

(Cover done by the amazing Sw1tchbl4de. Check him out here! http://sw1tchbl4de.deviantart.com/

Larger version of cover art can be found here: http://sw1tchbl4de.deviantart.com/#/d4ovlt2)

Luna, Princess of the Night, feels like she's under quarantine in Canterlot. Apart from Celestia and her personal aid, Scrivener Blooms, Luna is treated like Nightmare Moon by the residents of the castle. After a journey to Ponyville, however, Luna takes an interest in attempting to make friends and begins to yearn to see more of the world and to prove that she is back in control of herself and regaining her old strength.

A mix of romance, high fantasy, and magic, the story features the power of friendship, sarcastic wit, and adventure against darkness driven by Luna's brash, courageous spirit.

The first story of the Nátta Edda, and beginning of the Fimbulvetr Trilogy.

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

Hidden Fortune and her sister grew up in the Wasteland, learning its dangers and doing their best to stay out of sight and out of mind of the larger world. During a treasure hunt they discover a Stable, and a chance encounter changes their world. Now the sisters must travel out of their element, learn how to survive all over again, and hopefully, discover the one true treasure of the Wasteland.

Cover art by Jordo76.