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

Ponies can’t breathe fire. Twilight knows this--but that doesn't stop her from trying.

--

For the Equestria Daily Friend-Off.

This story is a sequel to Aegis of the Hive

Natural selection. It is the byword of every changeling queen who has ever lived. The chief resource that has always curbed the hives' growth used to be love. Now though, with Queen Twilight Sparkle's bloodline capable of producing love on their own, the old guard of changeling morality has seen fit to acquire this ability for the next generation before removing all of their future royal daughters' competitors.

Some queens are far closer to this goal than others.

Editor in Chief: A Bitter Pill, and Boldish42

Spike the dragon has a lot of free time on his claws these days, and has to fill that time with something, right? And where is he getting all these bits from?

Twilight finds out just what he's been doing, and she is not pleased.

Edited by the amazing Level Dasher.

Edit: Special Link, just for Rainbow Bob. No one else click it!

I still love ya, Bobby. Just know that.

When the deposed king of the Diamond Dogs is brought before the court of Celestia, the story he tells is far too much to believe. For if it is true, the Equestrians' conquest of his nation has been a terrible mistake.

* * *

Audiobook by Illya Leonov.
Proofread by GaryOak.
Reviews:
PresentPerfect
The Goodfic Bin

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.

Philomena is reborn after she dies. Ponies are reborn before they die. But always changed.

It's hard for a bird to understand.

[Queen of Queens is now an audiobook! Part 1, part 2.]

Our kind has it that the life of a queen is the happiest, for they are blessed with the shortest time in this world. A mighty queen will be remembered for eternity, forever residing in the hearts of her people. The greatest tragedy a queen can suffer is to be forgotten – to be stricken from history.

I refuse to bend before oblivion.

As discussed in the Royal Canterlot Library.
As seen on Equestria Daily.
Featured in the Royal Guard.
100% approved by Twilight's Library.

Octavia Melody's love of music has revolved around a single influential and prestigious work of art, the song May Our Sun Shine Forever. Since she was a filly, what has been the Equestrian national anthem for generations has continually inspired Octavia to perform, shaping her into the promising cellist she is today. Though the completed original was lost to the passage of time, the remnants of the final masterpiece composed by the Grand Maestro Glissando has been the cornerstone of not only Octavia's career, but modern music theory in Equestria.

When the tattered remains of an ancient songbook possibly containing the original song in its entirety is found, the Equestrian Society for the Performing Arts and Princess Luna begin planning a concert series to celebrate the work's eventual restoration. However, their meeting screeches to a halt once Princess Celestia vehemently forbids anypony from playing the original in the concert and demands its restoration to cease immediately. Octavia Melody finds herself at a loss, wondering why the princess of the sun would silence such a beautiful song meant to bring light to the world.

Proofread and Edited by TheAncientPolitzanian and various others over the years of trying to fix this thing.
Cover Art Depressing Melody by TertonDA
Updated 02/27/24

Cadance is the Alicorn of love, but what does that mean if she doesn't have her true love with her?

She needs him, at any cost.

Primary Cast: Cadance
Supporting Cast: Twilight Sparkle

Now with audio reading by CaptainBron3y