This story is a sequel to The Best Night Ever

Final Arc - The Black Wedding
CH63 - If I Had a Heart
- The ponies of the Fourth Tribe are ascendant. Shining Armor hunts down his changeling "daughters," and even Lady Antimony won't get in his way. Meanwhile, high above the burning city of Canterlot, a long awaited reunion occurs, and Twilight confronts Alpha Brass and makes a final decision.

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It began with a mare from Ponyville and a time-looping Prince from Canterlot. This most unlikely union now stands at a crossroads: a ruthless changeling invasion; a conspiracy within the highest circles of the Equestrian aristocracy; a half dozen power hungry noblemares looking to become a Princess in all but name. With the prize of Canterlot and its Platinum Crown at stake, it falls to six Elements of Harmony to once again save not just Ponyville, but all of Equestria.

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TVtropes page is here: link

The prequel to TPC, "The Best Night Ever" is here. link
The side-story crossover with "Sweetie Belle Chronicles" is here. link

Someone out there made a playlist for Platinum Crown: Rarity, Blueblood and Chrysalis. Pretty sweet!
Wish I knew who, or even when they did it, though. I especially like the Chrysy playlist.
https://8tracks.com/explore/this_platinum_crown/hot/1

I've gotten some cool TPC related art done, too.
So Sweet and Tasty's TPC Cover Art
link
Thanks to Madmax for these two:
Rarity, Blueblood and Antimony
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Dash and Ritterkreuz
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The Terre Rare Founder - Lady Arsenic
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Twilight and Alpha Brass Battle Duet
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It's high summer and Twilight has been feeling overworked. To relax, she reads some poetry under her favourite tree, but it's terribly difficult to unwind when Fluttershy runs past dressed as a rabbit. A White Rabbit.
What is going on? Why is everything so... weird? Is she in a dream? Or are more sinister forces in motion?

Based upon the delightful novels Alice's Adventures in Wonderland and Through the Looking Glass, by Lewis Carroll.

This story is a sequel to Upheaval: Reckoning

Equestria's fragments have reunited, and the power of sunlight shines once more within Celestia. With the remnants of the Old Kingdom destroyed, the Abyssal Throne sent away, the threat of Gravitas defeated, and Black Rose no more, Equestria now faces the encroaching darkness of Oceanus and his rebels.

But the stage is not yet fully set. Twilight Sparkle and her friends must gather what means they may before the battle is joined.

Cover art provided by Captain Nibbles

This story is a sequel to Upheaval: Breaking Point

Following the events of Breaking Point, Twilight Sparkle and her friends discover that Equestria's demise may not come from an enemy invasion, but from within. The Barrier Lands and the Heartland begin the slow and uneasy process of reuniting into a single Equestria, but this long-delayed joining is already in danger at its conception.

With Celestia's power in her grasp and her agents by her side, the wheels of Black Rose's plans for Equestria's future continue to turn. However, her brazen gamble has done more than just bring down a centuries-old barrier. Ancient powers begin to stir: the remnants of a dark period in Equestria's history, the immortal inhabitants of Celestia's homeworld, and a rising tide of darkness coming ever closer.

Equestria is a land of magic and harmony, a peaceful realm ruled by immortal and benevolent monarchs. At what cost is this possible?

Following the discovery of a strange and powerful device, Twilight Sparkle is whisked away to the edges of a land she thought she knew so well. Here, surrounded by ponies whose very existences have been kept secret, she must contend with vicious enemies, hostile allies, and the truth.

Chapters 1-16 edited by KiltedKey

After the siege of Bastion City and the theft of the power of sunlight, Spike takes on Prince Terrato's offer to train under the kirin, Seethe Scale. He must travel to the Western Barrier Land to gain the strength to help his friends.

Once there, however, Spike soon realizes that there is more for him to contend with in this harsh environment than developing his abilities.

This story is a sequel to Reformation of the Hives

Even though the threat of the jungle queens and Grogar have been diminished, life often times does not get wrapped up in a neat little bow. More troubles present themselves large and small. Our only hope is we keep passing life's constant tests, even when it is the last thing we wish to do.

Twilight Sparkle, also known as Medusa, is a hardened criminal mastermind, and the leader of what was formerly the most feared band of criminals in all of Equestria. That was years ago. Now, her crew is in shambles, and she looks to two-bit thug Rainbow Dash to bring it back to its former glory.

With Twilight's genius and experience, combined with some fresh blood, the Mythos Crew may become more formidable than ever.

This story is a sequel to Fallout: Equestria - Duck and Cover!

NOTE: Duck and Cover is not required reading for this story.

Atom Smasher is a special kind of pony. She lies, she cheats, she steals, she stockpiles explosives and relishes their liberal application, and she's one of the good guys. She earned the praise of the locals after becoming the accidental hero of the wastes around her home, but once the day is saved, being the hero is boring. She needs a new adventure.

One day, a letter arrives, inviting her to join her brother in San Palomino on a search for their missing dad.

She doesn't remember having a brother.

It is, however, just what the doctor ordered. Now, if only this desert wasn't so damn hot...

A more serious look at Atom Smasher from Duck and Cover. Also being written at a less breakneck pace. Original by Kkat, cover art by me! Editing by IsiahJacobs.

It is the year 2038, and the Earth is slowly being consumed by a space-borne monstrosity dubbed the Black Tide, which is using nanotechnology to remake the planet into something hideously alien.

Erin Olsen works for Project Harmonics, humanity's last-ditch effort to find a new world before the Tide can wipe them out. But when that world is found, and it turns out to be occupied, Erin will need to find the courage to face the unknown in order to save the inhabitants of both worlds.

(Many thanks to Easteu for the fantastic cover image for this story!)

Now with its own TV Tropes page

There is now a follow-up to this story: Sunflower - Side Projects
Sequel: Project Sunflower: Harmony