Diablo Crossover.

The Archangel of Justice destroyed the Worldstone to spare Humanity the corruption Baal infected it with. The force of its death knell shatters Mount Arreat and sends Tyrael hurtling across the endless planes of reality. He falls upon a world untouched by Angel or Demon, far from the sight of the High Heavens. So far, in fact, that he fears he will not be reborn from the Crystal Arch.

Wounded and near death, hope appears in the form of two strange creatures bearing the power of night and day.

Tyrael now faces a time of recovery as his power slowly heals within a body fashioned for him by his saviours. Justice Incarnate tastes for the first time the life of a mortal, and it is a strange, confusing experience .He has been left in the care of one Twilight Sparkle to learn of this world.

After all, where better to find peace and harmony than Ponyville?

Act I - The Root of Evil
Act II - ????????
Act III - ???????
Act IV - ???????

[Cover image used with full permission of the owner. Go on, go have a look at Chagial's stuff.]

I was known as Frank DeFontaine. I was going to a Halloween party. I was a pretty intelligent kid, starting my first college term, and decided a little dress-up couldn't hurt.
My buddy Richard got involved, though. And like everything, he took it a bit too far. This time, I didn't say no, though. I really should have.
Next thing I know, we're going all-out on making my Dullahan costume. Because he's my favorite optional boss, and all.
Really shoulda known something was up when that guy behind the counter just so happened to have a sword that fit our specifications perfectly.
Next thing I know, I'm in Equestria. And I'm missing a head.
Sakes, I could use a drink. And a neck.
-----
Featured on 2/19/2014.
I'd like to leave it at "Holy mother of-!" but that doesn't capture what I'm feeling!

Marko and Ishmir are polar opposites. But that’s what makes the Spartans so good together. So good in fact they can take on a whole Covenant space station and win.

Unfortunately extraction didn’t go too well, and the headhunters find themselves stranded on an unexplored planet. Can Ishmir keep the peace with the locals and get the Spartans home; or will Marko cause an interstellar incident?

My money’s on the latter.

Halo (non-canon) vs. My Little Pony (season 4) Crossover

Rated Teen for gratuitous swearing, violence and suggestive themes.

A demon of a long-forgotten time, trapped in the barriers of an ancient prison; forever cursed with loneliness... until one day, she meets a human.

"What a queer looking creature..."

Heavily inspired by Juniper's Knot a visual novel by Dischan Media. Reading it is not required.

Thanks to DVAN56, bocaj518 and Mr101 for their help!

Most ponies assume that something is wrong with Ditzy Do's eyes. Theories range from a head injury to a genetic disorder to muscle damage behind her eye. The crueler folk suggest she's just retarded. Nicer ponies say it's just a party trick she never got tired of.

They're all wrong. They're all very, very wrong.

I discovered the truth one day in conversation with her. One eye would always look at me, and the other would wander. At least, I thought it was wandering. So while we were talking, I followed it. Goddess in heaven I wish I had not. Never follow the other eye. Ever. Because Ditzy Do's eyes work fine.

She's just watching something. That... thing that's always in the corner of our eyes. And if she looks at you with both eyes?

Goddess save you.

----

Preread by BrastaAAura17, Chase Cosmicwing and dreamingnoctis. Cover art also by dreamingnoctis. Guy's a bro.

...the Creator shall bring forth another Ponyfolk, one in the same design as the original, who will unite the untransformed and renew their hope for survival...

Twilight finds a strange book on her doorstep. Now, she must protect the book and its secrets with her life, for that book holds a truth that would hurt Celestia's campaign to destroy the changelings... as well as the only way to save herself. But how can a pony live when the place she used to call home has branded her as evil? Exactly how many secrets surround the Princess of the Sun and the changelings?
Set before Twilight becomes an alicorn.
Special thanks to my pre-reader/editor SynthesizerJohn.

***INFORMATION*** Originally, this was a one-shot portraying changelings as the good guys. The one-shot is the Prologue, in case anyone wants to know what I had originally written. Because of this, the Prologue may have unintended spoilers to the rest of the story. The actual multi-part story will start with Chapter 1. Tags may be changed as necessary.

A "Reference" chapter may be added later, which would hold all the passages of the Book as well as links to the chapters in which they appear.

Art from Microsoft ClipArt and edited with TheGIMP.

After discovering that Cadence is not who she appears to be, Twilight is sent to another world entirely by the disguised Changeling Queen to avoid her plan being disrupted.
When Twilight lands, she discovers that not only have Spike, Owlowiscious and Peewee followed her, but that they've arrived in a world where the main sentient species is human.
There's still a place where they teach magic, though.
Crossover with Harry Potter. Twilight will be effectively taking the role of Hermione.

I've marked this story as cancelled to reflect the unlikelihood of it continuing. If I do come back to it I'll revert that.

This story is a sequel to Past Sins

Touch, Smell, Taste, Hearing, Sight

This is the order the five senses develop in for foals as they rest, cradled in the warm safety of a mother’s womb. But for one, her womb was a thorn bush in the dark of night. For one, the safety and warmth that should have carried her into the world was replaced with pain and cold.

These are Nyx's first hours.

Destiny is a fickle thing.

Cloud Kicker had her life figured out. A cushy desk job in the weather service in a few years' time. Great friends. Good times. Loose mares. A mild amount of family and relationship drama along the way, maybe, if she was unlucky.

She'd never have guessed that her life would take a meteoric rise toward eternity after making a cute, purple librarian cry.

(Written entirely for laughs for AU Month in the Winningverse. I couldn't resist.)
(For those that reflexively downvote Winning stuff, comment instead! It's more fun to bicker. Ask Pinkie.)

Not all humans who arrive in Equestria are friendly. Sometimes, they're total assholes.
Sometimes, they're trolls. Like these guys.

When you're two dudes who are cosplaying as Tobi and Yoshimitsu and are labelled Public enemies 1 and 2, sometimes, you just gotta go on a road trip.

Loosely inspired by F*ck it I'm having fun. Pic drawn by Genbu, who's kind of the coolest.

Edit: Huh, featured on 5 May 2014. Wasn't expecting this.