Celestia gets four unexpected new arrivals, with an agenda of Biblical proportions. But can the princess postpone the Earth's Judgement Day by introducing the four ponies of the apocalypse to the power of friendship and magic?

Caution: Biblical themes abound, even if slightly irreverent.

A young inventor named Tinker has her life turned around with the arrival of a mysterious mare in a crimson cloak and a tattoo in the shape of a draconequus that runs the length of her body. When their fates become intertwined, Tinker will travel through time and space with the pony once known as Twilight Sparkle and witness the nature of her universe and the ponies who inhabit it.

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

Twinkie Pie. Appledash. Rareshy. You know these pairings and may have favorites of your own. But what if every member of the Mane Six were paired with every other member in the same fanfic?! That's what the Combinatorics Project is--an epic treasury of fifteen ships spread across five parallel universes increasingly full of plot and whimsy. Can you guess which couple is which?
* The angster and her secret admirer
* The burlesque showmares
* The celebrity marriage
* The commune farmers
* The curse victim and caretaker
* The dessert caterers
* The hopeless homebodies
* The industrial mavens
* The mad scientists
* The masquerade hosts
* The model train overlords
* The multiversal adventurers
* The orchard grafters
* The rivals in love
* The weather aficionados
Plus: Twilight blows up like a balloon and goes out to 'have a spicy time'! Applejack and Rainbow Dash are competitive about everything! Rarity dresses like a butterfly--and later in five outfits at once! Pinkiezilla crushes a miniature town and argues with Octavia about her instrument! Fluttershy dances with an angel and keeps a weather diary! Derpy tells a six-word joke! Not everypony ends up happy, but most do! A little suspense is a good thing. Bitter sorrow! Transcendent joy! Probability cupcakes are cupcakes that cupcakes!
Note: This story was written during Season Two, so a few small things are out of date.

[Canceled]
Discord was defeated. Villains always are. It’s really quite cliché.

Before he lost, he asked himself a question: what if your virtues went out of control, rather than your flaws? Perhaps if the heroes and villains weren't so clear-cut, the conclusion wouldn't be so inevitable. If nothing else, there would be some fun chaos along the way!

Can the main six find a way to undo Discord's magic, in spite of themselves and each other?

Disclaimer; I have been working on this for a while, and the writing at the beginning is not as good as the writing later. Hopefully it is not too great of an impediment to the story.

Editing by Meta Four, ocalhoun, Kuroi Tsubasa Tenshi, Sessalisk, Sereg, and JapaneseTeeth, all of whom are amazing. Go shower them with admiration!

Featured on Equestria Daily!

Alternate cover by sstwins! Unfortunately I couldn't use it since it compresses badly on fimfic, but still worth a look!

Google Docs version (contains unpublished/scrapped chapters and early drafts--if you're only interested in the finished product you can safely ignore this link)

Applejack has always had a secret dream, one that some ponies would find strange for the tomboyish farmer. She's always wanted somepony to treat her to a special romantic night, while being treated like a real lady. Turns out all she had to do was have a certain rainbow-maned pegasus catch her in a dress. Such an awkward moment will lead them to a night neither will ever forget.

WINNER OF THE APPLEDASH CONTEST!

Also on Equestria Daily

Rarity and Applejack share a secret history: as fillies, they were the best of friends, until one terrible day soured their relationship for years to come. Forced back together by recent events and mutual friendships, they nevertheless cannot ignore the painful memories of all that went wrong. The past cannot be changed, but when Rarity and Applejack must work together to save their sisters from terrible danger, it just may be the case that a friendship once broken can be reforged in fire, and emerge from the flames stronger than ever before.

This story is a birthday gift from me and the illustrator, Harwick, to a very dear friend with a singular affection for Rarity and Applejack.

Twilight calls her friends to the library to assist her in a spell she wants to try out. Her friends freak out when the spell turns out to sound a little more serious than initially assumed. They soon find out, however, that their fears were entirely unfounded.

Featured at The Round Stable on November 30, 2011.

This story is Complete!

After miscasting a spell Twilight's friends begin to feel differently about her. When Luna and Trixie show up in town things really start to get crazy. It seems a new competition has begun on who can win the purple unicorn's heart. Meanwhile Twilight struggles to understand why everypony seems to be falling head over hooves for her. Well not literally everypony, but you know what I mean.

WARNING: This pretty much ignores Season 3 entirely. Well Trixie's part anyways.

(Big thanks to Blueshift for helping me properly bring this story back to the site!)
FEATURED ON THE FRONT PAGE - THANK YOU TO ALL THE READERS!

Every Fifty years a special reunion is held by the many creatures of Equestria and its neighboring nations to maintain the peace that they have known for so long. This year much has changed. Equestria is on the brink of war and only one Princess has what it takes to prevent it. Rainbow Dash, daughter of Celestia and Heir to the throne. Bonds of friendship will be tested and some friendships will become more, while others are torn apart at the seams.

(After thinking over all the hate-mail i received on this story and everything the fans of this have told me, I've changed the story a bit. I feel I was a bit too harsh on Gilda. I've added in the missing scenes that were removed before due to fear of what people would think, and I've changed a few more things that were bugging me when i first wrote it.)

Partially inspired by Sun and Stars Please go read it, the story is awesome and the writer is even more awesome.