Luna and Twilight are sunk into a fractured, feudal world, where the knowledge of magic is lost. Penniless and depleted, they're forced into playing by other ponies' rules, all the while trying to discover even where home is.

Twilight's friends are demanding that she explain her recent actions, but all she seems to want to do is give a lecture about an obscure type of magical artifact to her new pet rock.

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.

Captain Alex "Blitz" Noah, the commander of the M1 Abrams "Retribution II", is accidentally teleported to another dimension with his crew and tank while testing experimental shielding devices. The crew unsure of what has happened find themselves in a colourful world full of ponies?! This is my first fic so if you find any errors please show me and I'll fix them.
Suggestions and any constructive criticism is welcome.

Twilight Sparkle is eager to begin her first officially sanctioned research expedition, but when she and her friends encounter something unexpected in a distant corner of the Everfree forest, they are unprepared for what they find.

The crew of Voyager have been crossing Borg space for weeks. When a long serving crew member leaves them, they find themselves stranded even further from home.

With a soulless enemy bent on the destruction of all they hold dear and an ancient evil rising to take revenge, can the crew of Voyager forge an alliance in time to save Equestria and their ship?

Star Trek Voyager crossover

Some plot elements inspired by VaporingRat's story Friendship Is Futile

After the changelings' failed invasion of Canterlot, Twilight tries to soothe some of Ponyville's rampant paranoia by casting a spell to prove there are no imposters hiding in the town. But her spell leaves her in an alien body, facing a mob of angry ponies who just don't believe her when she says she is Twilight Sparkle.

Or, at least, she was Twilight Sparkle, anyway...

Featured on Equestria Daily, 2/17/13
Cover art is by the awesome and amazing Conicer

Some lessons are too big for one letter. Others are so important that they need to be shared with ponies everywhere. When these two come together, Twilight Sparkle tries something new.

She writes a book.

Everypony remembers exactly what they were doing when they first found out about the griffin invasion. Many saw it as a growing shadow that threatened to overtake all of Equestria. To those in the towns and cities that would become the front lines, it was a terror made real. With Canterlot in flames and Princess Celestia injured, many wondered how anypony could make everything right again. I was among them.

But we did it. Together.

These are my experiences and lessons learned during The Great Griffin Invasion, and it’s not just my story. War is a dark affair, but we can always learn something from the worst of times. In fact, we have to. The lessons are too costly to let them go to waste. And maybe, with a little help from this book, we won’t ever forget.

-Princess Twilight Sparkle

(Valor is Magic is a story of war and values set between seasons two and three of My Little Pony: Friendship is Magic. As of the end of season three, the events of this story do not justify an AU tag.)

Humanity has grown to control most of the Sol system, and looks to distant stars for further expansion options. When probes discover an uncannily-earthlike planet at a vast distance, the Solar Government takes on a project larger than any before it.

A colony ship, carrying over seven thousand people, the Eclipse is constructed. Thanks to its translight engine, it is capable of making the journey within two decades. The expedition is launched with high hopes, its crew made up of the best and brightest, setting out to prove that the vastness of space was no longer an insurmountable obstacle, that landing on distant worlds full of life was no longer just a pipe dream.

What happens when this colony ship's crew arrives at their destination would forever change humanity's outlook on the rest of the universe, as well as what could be deemed possible. Supernatural beings, energies unexplainable, and most importantly, sapient organisms all populate this mysterious, fertile world. In all of its extensive preparations, is the Eclipse versatile enough to tackle the task assigned to it? Or, more importantly, is its crew?

Featured on Equestria Daily 1/1/2013.

Pre-read by Stringtheory and Milo. Proofread by Erumpet and Demetrius. Thanks! Contains some hard and some soft sci-fi elements.

It occurred one peaceful night. Half of Equestria awoke to the sound like a double-shot thunderclap. A percussion heard in the skies and rattling windows from Apploosa, to Canterlot, to Ponyville. Nopony knew what it was or what it heralded for the world as it drew a line across the nation.

For Twilight Sparkle, this isolated incident might have faded from memory after a time, if not for the strange rumors of a creature sitting on the hill on the outskirts of town.

These are her thoughts given written form. These are Sparkle's Notes.

Report EVERYTHING to the Princess.

War has come to Earth. Millions are dead or dying in a massive alien invasion, in what might possibly mean the end of Humanity as a whole. Our last hope rests with XCOM, a secret organization comprised of the best soldiers, Scientists, and Engineers to help beat back this invasion. A simple mistake by Rainbow Dash thrusts her and many other ponies into this war-torn earth, as XCOM and Equestrians now stand side by side to stop this invasion.