Princess Big Macintosh saves Equestria.

This comes as a surprise to Princess Celestia, who wasn't aware Equestria needed saving, actually.

A less-than-imposing sovereign.

Daring Do cannot believe her luck when she is asked to help explore the most ancient tomb known to ponykind. But terrible danger awaits her, for beneath the earth rests something beyond equine understanding.

Warning: comments contain ending spoilers.

TVTropes page.
Alternate ending by Duplex Fields.
Archived in the Pony Fiction Vault.
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Once, I thought I knew it all. All I had was overpriced cable TV, slacker friends, no girlfriend, and a shitty job doing customer support, but I thought I knew it all.

That all changed one day when I dressed up for a costume party as the semiotic psychoanalyst Jacques Lacan.

A Displaced Philosopher Story. Drawing of Lacan by Marcos Manzi.

A millennium ago, give or take, Princesses Celestia and Luna were nearly defeated by the most powerful villain that they had ever faced, Grogar, the dreaded lord of Tambelon. Thanks only to the whims of random chance, the two princesses survived that encounter, but have been forced to live in fear of the time of his inevitable return. That time is now...

...But whatever revival was intended has gone a little... wrong. Behind the wheels of Grogar's body is the spirit of a slightly extremely eccentric human. Equestria would have been lucky to survive the real Grogar, but will the ponies fare any better with this loon ruling Tambelon?

Sex Tag For Sexy Times Reasons, Gore Tag For Gorey Time Reasons.

You. Have. Been. Warned.

Nightmare Moon's return was cause for a lot a fear and panic. A lot of Chaos. Isn't it possible, nay probable, that all of that might have reached a certain draconequus statue? A certain draconequus that, once free, is a bit confused about what happened, and decides to investigate into who alicorn-napped Celestia and stole his shtick. When he realizes its Luna as what he dubs "The Eternal Prom Night Queen" (among other things) that's when things get interesting.

Watch how things unhold for the Mane 6, the Princesses, and all of Equestria when Discord not only gets free during Nightmare Moon's return, but also playing a major role in stopping her and saving the day. And seriously, what now, princess? Going to stone the hero while pardoning the villain?

This will be a Rewrite of the series. Don't worry though, Discord may seem nicer than he should be, but he is more curious than anything.

PS I'm honestly not sure if I'm using the correct tags, so they may or may not change in later chapters.
PSS Not sure how important this is, but I've seen other authors list it:
Featured December 26-31, 2015

Coming straight out of FTL, Captain Amelia Finegold barely has time to blink as her ship, Cobalt Blue, crashes into an unknown vessel in deep-space. Struggling to get ahold of an unexpected situation, things take a turn for the bizarre when she finds out the other ship isn't driven by humans. Or even occupied by humans at all.

One moment, Twilight is asleep. The next, lights and alarms blare as she comes to grips with an unexpected emergency. Problems crop up one after the other. Irreparable damage, wounded ponies, and a new alien species?!

Set in an alternate universe where Equestria became a space-faring empire.

Small note: Some revisions have been made, thanks all!

A human stays among ponies, mystifying them with his odd traditions and customs. It will be five years before Celestia and Twilight can send him back to his homeworld. Until then, Twilight wants to study him and have him experience pony culture. These are their stories.

I don’t know if I’ve truly died or lost my mind. What is reality, what is sanity? Are they not just a product of society, a unit to be measured? Something that can be judged, evaluated, and constricted by belief, but also something that is limited by our very biology? I’m not really sure, yet I believe myself to be sane, and have decided to embrace my own reality. One born purely from thought, bound by the limitations of my imagination. This… is a tale of ”my” reality, my triumphs, my mistakes, and the sins of a father.

Sphinxes. Creatures from ancient Anugypt, shrouded in mystery, myth, and superstition.

When an archaeology caravan passes through Ponyville carrying the find of the century--four mummified sphinxes--an ancient Anugyptian curse awakens and regenerates the Sphinx Queen Neferkitti and her retainers.

Now, four mysterious creatures from another place and time are on the loose...and mildly annoying the citizens of Ponyville.

(Cover art by zimvader42, used with permission.)

A clerical error in the Registry of Mortals sends an unwitting human to a strange land. It wouldn't be so bad, if the ponies there weren't out for his blood.

Literally.

A little twist on the myth that unicorns were hunted for their fantastical powers.