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

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

Equestria is a nation on the edge of disaster after the devastation caused by the Lunar Rebellion. Beset on all sides by nefarious enemies, vicious foreign invaders, insane Lunar cultists, malicious fey, and diabolical conspirators all threaten Equestria’s borders and stability. Midnight Sparkle, daughter of Archmagus Sunbeam Sparkle and herself a newly minted Magus of Equestria, soon finds herself embroiled in the chaos surrounding her homeland. But what hope does a single unicorn have against so many overwhelming threats?

A chronological sequel to The Lunar Rebellion.

This story is a sequel to Rise of the Phoenix Empress

It has been nearly nine hundred years since Sunbeam Sparkle claimed the throne of Equestria after Celestia’s abdication. In that time, she has forged Equestria into a powerful centralized empire that spans most of the known world. Even the distant griffons and zebras pay reluctant homage to the Phoenix Empress.

In this series of connected one-shots, we’ll be taking a look at life the new Equestria Sunbeam Sparkle has forged, through the eyes of its inhabitants.

Study Buddies: Sunset Shimmer and Twilight Sparkle are the Empress’ co-students. They also rather dislike each other, mostly due to Sunset’s less than friendly attitude. Can they find a way to work together to fulfill the Empress’ high expectations, or will they just end up trying to kill each other?

Rainbow Dash flies east.

This story is a sequel to A Moment in the Sun

Sunset Shimmer is on the run. It's been six months since she left her life as Princess Celestia's student behind, but she can't escape her own past. Her parents are offering a reward for her safe return home, and Celestia's agents are watching her every step. She might have gotten out of Canterlot, but the runaway student is still a long way from freedom. Especially since her education with the Princess of Equestria didn’t cover things like how to make a living wage with her magical skills.

However, there might still be one place where she can escape all of them. The infamous island nation of Freeport has long had a reputation as a haven for pirates, criminals, and exiles, but there's no better place in the world for somepony who wants to disappear. The only question is whether Sunset will live long enough to pull it off.

Cloud Kicker might just have the wildest life of any pony in Equestria. Marvel at the insanity that is her life, and laugh at the suffering of her poor beleaguered best friend, Blossomforth. And maybe, just maybe, there's more to her than just the lovable sex maniac everypony thinks she is.

This is a semi-sequel to "The Incredibly Dense Mind of Rainbow Dash." Not really a proper sequel, since it's focused on Cloud Kicker and Blossomforth instead of Rainbow and Pinkie, but it's in the same continuity. So I guess that makes it a follow-up-side-quel story. Or something. You don't need to have read "The Incredibly Dense Mind of Rainbow Dash" to read or enjoy this, but you ought to read it anyway, just because.

TvTropes Page

The central story of the Winningverse.

We got a tag for Cloud Kicker, but Blossomforth still deserves one too.