NEW PRINCESS ATTACKS GRIFFONSTAN IMPORTS

The Equestria Daily can exclusively report that newly crowned Princess Twilight Sparkle became embroiled in an argument with the Griffonstani trade minister about the inferior quality of griffon quills, alleging that "they just don't hold ink as well as pegasus quills". Import markets tumbled overnight, threatening the solvency of numerous Equestrian quill merchants. Princess Sparkle could not be reached for comment.

(When you're done, bookplayer has a fun "Let's Read" commentary version!)
(Also, GhostOfHeraclitus wrote a prequel from the perspective of Dr. Spinning Top!)
(Also also, now available in Spanish thanks to Spaniard-Kiwi!)

This story is a sequel to Metroid Equis

With the culmination of events on the BSL Research Station, Samus Aran is finally able to come back to Equestria, Planet Equis; to come back home. Much has changed in her absence, but it is still the friendly, peaceful, welcoming planet and nation that she left behind two and a half years prior. With the Space Pirate threat neutralized and the secret, illegal Metroid militarization programs destroyed, it appears that Samus can finally take another massive breather with her friends and enjoy some well-deserved rest, recovery, and relaxation. The galaxy is finally at peace.

At least... for a short while.

A new enemy, one much closer to home, soon rears its head, threatening all of Equestria and Equis with complete and utter annihilation. Their mission: revenge. Samus will fight with all of her being alongside her allies against an enemy who would like nothing more than to see all that she holds dear, including her home planet, completely razed. In so doing, her cunning, ever determined enemies unleash a weapon so unexpected, so eerily familiar yet horrifically foreign that even Samus herself just might prefer the late Ridley or the SA-X...

Editing Team: Random_Dragon; ToxiClay

The Metroid Timeline/Chronology (confirmed by Nintendo) can be found here.

Canon Considerations
MLP-FiM: Up to AND including "Magical Mystery Cure." (Seasons 1, 2, and 3)
Metroid Series: Everything up to AND including Metroid Fusion (Including original mangas. See official timeline above). So, effectively everything.

After being marooned on an icy world in unexplored space, Lumina must now face the perils of this frozen wasteland and search for some way home. But in this dark place, she discovers something that was lost to pony kind ever since the fabled Equestria sank into the ocean over 10,000 years ago. Something that will change her, and possibly the entire galaxy, forever.

Not a cross over, and not an alternate universe. This is the far future, and this has happened before.
Cover art by CSImadmax

Now in the FimFiction Gold Archives!
Now on Equestria Daily!
Now featured in Fort-Book Reviews!

Crime was easy before Princess Twilight and the First Five ushered in a golden age of Harmony. Back then, any idiot could plan a robbery, just like any rat could sneak through the cracks in wooden granary walls. But now that everything is cloudstone and clearsteel, with magical countermeasures over the few remaining holes, it takes a different breed of rat to survive.

"Slippery" Jimmy the Grey is one of the rare few ponies who can still slip through the cracks — even with the legendary Rainbow Corps on his tail. Now he's got a billion-bit heist planned in the gleaming skyscrapers of Cloudsdale. If only he hadn't made the mistake of stealing from a dragon …

Now with a reading by Illya Leonov and Scribbler!

* * *

This is a crossover with Harry Harrison's Stainless Steel Rat novels, but it assumes no knowledge of the series.

Winner of February's Writeoff Association competition! * Featured by Equestria Daily! * Featured by Seattle's Angels!

REVIEWS: "Highly Recommended" by Titanium Dragon; "Recommended" by Present Perfect; rated "Why Haven't You Read This Yet?" by PaulAsaran

WORD OF MOUTH:
"The Iridescent Iron Rat was not only my favorite story from the most recent writeoff... it's my favorite story of anything I've read in months." —Sharp Spark

"What a ride it is. This story is made of awesome moments." —Casca, Seattle's Angels

"[A]stounding on so many levels. … If there’s one story from this round you have to pick, make it this one." —Corejo, Seattle's Angels

"Absolutely beautifully done. It fits the style and feel of the books to a perfect T." —Themaskedferret

A Metroid Crossover

A meteor, resistant to magical manipulation, crashes in Equestria, Planet Equis, and soon spreads an unknown poison throughout the land. Containment is all but failing and the Princesses have little power to stop the spread of the Great Poison. The Elements of Harmony are of little use as no knowledge exists of this threat that consumes all life. Help comes from a certain Hunter, clad in metal.

Samus Aran will not only fight for her life as always, but her own sanity as well as these ponies that she begrudgingly starts seeing as allies. New horrors and abilities await her as a reason to fight slowly festers within her, possibly unlocking something she had been denied for so long: Friendship.

Notes and Resources:

This takes place after Echoes. The events of Corruption will have not happened yet. In terms of MLP, consider everything up to and including the Crystal Empire. Princess Twilight does not exist here, etc. The official Metroid Timeline can be found here.

As well, this story references the manga in many places. Reading of it is not required and I try my best to explain the context, but if you're interested, both volumes can be found here.

EDIT: This story was written over two and a half years, beginning in 2013. You'll probably notice the difference in writing as the chapters progress.

This story is a sequel to The Crown of Night

Now available in print from Lulu.com! Hardcover - Paperback.

(New readers, unsure where to start? The Education of Clover the Clever is best.)

Clover Cordelia is a freshmare student at the Cambridle Academy of Magic who is determined to become a great sorceress.

Star Swirl the Bearded is a legendary wizard in need of an apprentice.

It's a tough job, working for the world's greatest wizard. On top of the usual challenges of student life there are apocalypses to deal with, and assassins who show up at inconvenient times, and plant life scheming for world conquest.

It's probably nothing Star Swirl can't take care of, provided he and Clover manage to resist killing each other first.

Previously updated alongside its prequel, The Crown of Night. It is not necessary to read The Crown of Night first.

Featured on Equestria Daily!
Featured on the Royal Guard!

Cover art by iisaw.

"Characterization is the name of the game here, and this story's take on Star Swirl is one of the most enigmatic and intriguing I've seen. His eccentricity is offset perfectly by his straight mare, Clover the Clever, and the interactions between them are a joy to behold."
-Prak, PR for the Royal Guard.

Rated "Why Haven't You Read These Yet?" by PaulAsaran.

Weird praise for The Education of Clover the Clever from the comments:

"........The sadist in me is grinning while the student is screaming it's little lungs out "
-Smirkythread.

"I can't tell if he's insane or not. And it's glorious."
-FancyFan.

"I am unsure if this is merely silly and deranged or subtly brilliant."
-SIGAWESOME.

"Ok, so I like this story. I actually like it quite a bit. I have no clue why though. Not a single clue.
I haven't a clue what you're doing right, but keep doing it. You're awesome."
-Vibrato con Amore.

(New readers, unsure where to start? The Education of Clover the Clever is best.)

The stars can see the future, and they don't like what they see.
Beset by signs of a great evil approaching on the horizon, Princess Luna and a young unicorn who speaks to the stars set out to uncover and prevent an unknown disaster.

Star Swirl the Bearded: the greatest wizard nopony has ever heard of. Why is that? What did he do? Why do so few now remember that he existed at all, and why do those who do remember him say he was one of the most important unicorns of all time?
A mythical retelling of Equestrian history.

23.02.2014 Featured on Equestria Daily!
Prequel to a more popular and completed sequel, The Education of Clover the Clever. Feel free to read either one first.

Cover art by VSabbath, used with permission.

MLP/Undertale crossover.
Not a PWNY-verse story.

Long ago, the Monsters and Humans fought a great war. The Monsters lost, and were sealed in the Underground. It would take the power of seven human souls to break the barrier that kept them imprisoned. They only had six. And so the Monsters waited and hoped, praying that another human would find their way to the Underground. Some thought the seventh soul would give their King the strength to break the barrier. Some dreamed of a human who would be their friend, and save them all...or had nightmares of one who would bring back the war.

...but nobody came.

...but somepony did.

Eons after the war, with no way to tell how much time had passed above, a tiny blue filly with wings and horn fell into the underground, calling for her Mama. None knew the poor creature's nature or origins...but her soul was powerful with magic, even more so than a human soul.

None can know what will come...of this little 'Woona'.

Cover art by Sanyo21

What would you do, if you met a pony who was at once your brother, and yet not? Applebuck wishes to reunite with his 'Cousin JayJay', and braves the dimensional divide to reach his goal. But being a small foal, how will he deal with a world in which everything is flipped? His friends, his family, and even... himself?

This story is a sequel to Split Second

Twelve years ago, she broke time. Two alternate timelines exist, each with a different version of Twilight Sparkle. Both versions of her are able to see the other. In this timeline, Sparkle is a Necromancer.

Or rather, she was. Sparkle is dead now, not that she cares. She's got a new body. With Thorn (her undead dragon son) and Cobalt (her apprentice and an assassin for hire) at her side, she's ready to take on the world. Again.

(Spoilers in the comments. Read at your own risk.)

Featured on EQD.
The Tv Tropes page
The Ask Blog

This story is a sequel to Split Second and won't make sense without it.
This story also loosely shares continuity with Lupine Tree. Reading that is not required.

Cover art by Swirling Line.