It has been nearly sixty years since humanity witnessed the devastation of a World War, or any other kind of large-scale conflict. Equestria's abstinence has been even longer, with battles that rage across the entire land not being seen for centuries. Though both have seen their share of small-scale skirmishes, a duel of total annihilation across a large scale has been avoided by both sides time and again.

But peace is never lasting. For both sides, it lies on a cliff, requiring only one good push to send the participants into a plunge of death. Equestria's unexpected appearance may turn into that final push, as alliances, deception, and distrust threaten to launch a conflict that will lead both worlds to utter ruin.

CREDITS:
This work contains characters and parts created and written by other authors. I am grateful to have become friends with each of them.
Captain Jack R. Williams of the U.S.S. Boxer (LHD-4) created and written by An A10 Warthog
Captain Wilbur Hart and the U.S.S. Tippecanoe (CG-74) created and written by Totallynotabrony
Captain Starry Skies and the R.E.S. Horseshoe Bay (CSG-2) created and written by The Grey Pegasus
H.M.A.S. Sydney created and written by An Iowa Class Battleship
H.M.C.S. Presence created by Sockeye101 and written by The Rainbow Brony
USAF Pararescue team Prancer Two created and written by CptBrony
Carter Jones of the 130th Engineer Brigade written by Routine Blast
1st LT. Silverglow and the Karalian Army created and written by Silverstein.
Sergeant Jeff Thompson of C Troop, Royal Canadian Dragoons created and written by Goldenarbiter
Junior Sergeant Korrector and the 115th Motor-Rifle Division created and written by Kalash93
(More may be added over time)

NOTES:
Rated T for violence and language.
My Little Pony: Friendship is Magic created by Lauren Faust and owned by Hasbro.
Any and all other works belong to their respective creators.

CANCELLED

The lands of Equestria and Gryphonia are being tainted by pollution from human industrialization. With the gryphons threatening with war, can the ponies keep the peace between them and the humans? With the future of Equestria hanging by a thread, can the ponies and gryphons stand up to a technology that is much more advanced than their own? Or will they be doomed to destruction by the hands of man?

Editors: pjabrony, RobertBel98
Many thanks to CplHenderson for spicing up my cover art.
Character tags will be added as they appear. My first fic, criticism and feedback is welcomed. Human tech is approximately that of 1918

Twilight lives a comfortable, expected life with the security of being surrounded by her mentors and friends. As she grows into a model unicorn, a dangerous being takes hold of the volatile Brood and drives them to war, breaking a long period of peace. After years of preparation for a higher order, Twilight is chosen to ascend beyond that of a typical sorcerer in a mysterious plan to counter the impending conflict.

During her dark, trying mission Twilight will discover a caged soul and unknowingly set them free, gradually acquiring an affinity for the darkness as a result. As she struggles within deepening conflict, she must push on and fight for what she believes in. With manipulation, deceit, and betrayal storming around, will she be able to contain herself and protect those she loves, or will she succumb to the creeping darkness and abandon everything she stands for?

*Warning: Comments may contain spoilers.*

"Twilight Sparkle, you are hereby sentenced to exile!" From those words her entire world changed. Is her happy life gone forever? Or can it only get worse? What will befall the dethroned princess and will she have to bare her fate alone?

My entry for This contest

And I officially have an editor! Much thanks to pinkiepie17 and Twilight Scratch

Unicron begins to awaken, threatening Cybertron and everything on it. The Autobots and Starscream recognize the threat, but Galvatron refuses to see it as anything but an Autobot trick to get the Decepticons to lower their defenses. When talking Galvatron into admitting the threat fails, Starscream sacrifices himself to unite the two warring factions.

But instead of death, Starscream is gifted with continued life in a new land with its own conflicts.

Shoutouts to Alchemo Arrow and Legion222 for proofreading and editing.
Shoutout to Fan-the-little-demon on DeviantArt for the astounding cover art.

Follows MLP canon up to S3E13 as closely as possible.
Follows Unicron Trilogy (only the cartoons themselves, so no comics) canon as closely as possible, with small interjections of headcanon and other made up things to fill in the plot holes and lack of backstory in the actual cartoon.

If you're going to dislike, at least have the courtesy to explain why.

The Rainbow of Harmony wasn't enough to defeat Azazel, a being from another dimension. Twilight and her friends sacrificed their lives to give the seal the power it needed, but Twilight was left behind. Distraught by the turn of fate, she locked herself in her tower, searching for any possible means of bringing her friends back from the dead. Celestia and Luna went seeking answers as well, in the hope that it could help Twilight.

After three hundred years, Twilight has read nearly every book in the archives to find the answers. A strange theory about souls gives her a chance to bring back her friends, but the spell goes wrong, and she wakes up in another body: a human's body. Scattered across the land, the spell does bring her friends back, but they're also in unfamiliar forms.

Equestria isn't the country that she or her friends remember. After three hundred years without any monarchy, it's nearly unrecognisable, but it's still their home, and they need to defend it. For there are still threats to ponykind from outside, and Azazel is not without aid from inside...
~
Liberties taken with canon: Equestria Girls never happened. Everything else up to Tirek is ancient history in-universe. I haven't seen Season 4, so any nods to that are (probably) coincidental.

If you click the 'source' button on the bottom right of the image, it'll bring you to the gallery that inspired this whole thing. However, I won't be using all of the ponies shown there, and I may change a few things or transform a few ponies that aren't in there.

In case anyone gets confused, here's all the copyright stuff:
Most of the characters belong to Hasbro, and these depictions belong (mainly) to Yatonokami. Cloud Skipper and Midnight Blossom (actually, most of the Royal Guards) belong to Equestria-Prevails. There may be other characters later who belong to other people, so I'm just going to say here that I own nothing except this story and maybe one or two OCs, such as Azazel.

Spoilers in the comments, just like everything else.
~
Unfortunately, I've decided this story was basically just not going anywhere, so I cancelled it. I am still planning to do something with the concept once I'm done with LAT, though.

Yugi Moto and his friends are invited back to Duelist Kingdom to take part in an exhibition tournament set up by Maximillion Pegasus. There they meet a group of six duelists who know a thing or two about Duel Monsters that even the King of Games has never seen before. But with mysterious pasts, old rivalries, secretive wagers, and the ever-present danger of the Shadows, no friendly contest is ever as simple as it seems. Gather your cards and fortify you life points, cause it's time to Duel!

This is a blatant attempt to shoehorn a complete story out of a comic I found on Deviantart that wouldn't leave my head until I fleshed it out. That comic can be found here. I promise to not use quite as many memes as the comic did. I also promise to try and make the games as interesting as I can.

Chapter titles and character tags may contain spoilers.

Twelve thousand years ago, humanity was driven into a war with an unknown enemy. Fire rained from the heavens and the sky turned dark as the sun dimmed. Acid poured from the clouds and a plague was unleashed upon mankind: A virus that caused men to turn on one another. A disease that forced man to fall to his knees and beg for mercy. A pathogen that ravaged man’s civilization.

And when humanity lost all chances of reconciliation, all hope of keeping their loved ones safe, they pulled the plug, three hundred souls left Earth while sacrificing their only home to the angel of the enemy.

In the twelve millennia since the Great War, all traces of humanity have been wiped from the surface of the Earth. In man’s rightful place now are a multitude of sapient species. For twelve thousand years, these animals have lived in peace and harmony, man reduced to nothing more than but a myth, a folk tale, a legend.

But word has spread across the countryside. Word of forgotten beasts that still walk the western wastelands. Creatures able to bend the world to their will without the help of magic. Creatures said to be older than time itself.

Teen for language, and dark moments. Character tags will be added as the story progresses

This story is a sequel to Nigel M Chalmers, Emperor

(15/10/2015) Turned status back to incomplete pending an Epilouge and Alternate Endings chapter as per comment suggestions.

After being banished by Celestia for his misdeeds, the alien Emperor of the Crystal Empire is back... and out for revenge.

Emperor Chalmers is not a happy space man. After being stabbed in the back by Equestria, he was sent to the depths of the Underworld. Kicked out for causing too much trouble for the wardens, Nigel now has the chance to take back his empire and show Celestia just how disappointed he is with her.

This time things will be different. This time he has friends.

The Caprica. At one time, an impressive piece of technology for humanity. Originally built for peace; retrofitted for war. But now, Marcus is all that remains of the human race after a hostile alien invasion, and he uses the only life he's ever known to escape his captors. Making a blind jump to unknown space, his skills as a pilot, and as a man in uniform, will be put to the test.

Rated teen for language and some adult situations.