A dragon prince, awakened...
A Princess, in love...
A plot to overthrow the Equestrian diarchy and break the very foundations of equine society...
And an embittered Sorcerer willing to go to any lengths to realize his vision for the future...

Ranma Saotome doesn't care about ANY of that. He's on the wrong world, in the wrong body, and fate seems as determined as ever to drive the world's mightiest martial artist to an early grave. As schemes come unraveled and dark magic tears Equestria apart, all he really wants is to figure out what happened to Japan and keep himself fed.
But, alas, he always seems to be in the wrong place at the right time...

(Ranma 0.5/MLP crossover; not an Age of Iron Story)
(Cover art by EZTP)

Isolated from her friends and taken prisoner in the middle of a war, Twilight must deal with the very real dangers of being percieved as an enemy as well as the nightmares of her arrival on 'Earth'. Can she overcome her own fears and the fears of her captors? Will the wayward unicorn's assistance be a boon or a curse to the 'humans?' Most importantly, will she ever find her way home?

"In short, it's a story of friendship and plasma rifles, with the emphasis on the friendship. The characters are well written, the XCOM setting is fleshed out very well, and the story is compelling. If you love XCOM, you'll love the story, but even if you've never heard of it, it's more than worth giving the first 3 chapters a read.

There's excellent action later on, but the real strength lies in the collision between the friendly and naive world of Twilight Sparkle and the desperate world of humans fighting a losing war for survival and willing to do anything to turn the tide."

--Arzoo

(XCOM/FiM crossover)
(Cover art commissioned by a friend and created by the magnificent FoxInShadow!)
(Original cover art by the amazing Carnelian can be viewed here!)
(Gore tag for blood and some violence)
(Many thanks to the studius OminousTen, Arzoo, xXFluttershyForeverXx and finally Setokaiva for giving my rambles a once-over)
(Now with it's own TV Tropes page! Get to tropin' folks!)

This story is a sequel to The Wizard and the Lonely Princess

Book Two of the Lonelyverse

Having returned to the Dursleys after a highly eventful first year at Hogwarts, Harry and the alicorns had been looking forward to unwinding. As it turned out, all their hopes were for nought. Between summer shenanigans, a crazy house elf, and learning Potter family history, they've got a full summer ahead of themselves. And when they get back to Hogwarts, they'll have to deal with giant snakes, idiotic teachers, and a gathering darkness. With things going off the rails, they've got a long year ahead of them.

And if they survive that, they still got to deal with the strange power surges and dreams that both Luna and Nim have been having since soon after the Summer Solstice...

Other stories in the Lonelyverse:
The Wizard and the Lonely Princess
Hooves, Plush, and Magic: The Untold Tales
The Wizard and the Lonely Princess: Hallowe'en Special
A Nightmare Christmas

An accident in the lab sends our favorite boy genius to Equestria, as a pony. What will he do and how will he get back? The answer: Science! (Cover Art Updated!)
New FAQ! and TV Tropes!
Planned Phrases from Dexter:
“Pinkie Pie! Don’t push that Button!” /to Pinkie
“Please, Magic is the word simpletons and the ignorant use to describe what they cannot understand.”/ to Twilight
“No, I didn't strap a rocket to you. I strapped you to a rocket.” /to Rainbow Dash
“Friends? Who needs friends?”

Dexter is a boy super-genius with a disdain for anything girlish and no desire for friendship. After an mishap in his lab, he gets stuck in Equestria. How will he cope with the over-friendly ponies, and the girlish everything?
For any who do not know Dexter's Lab: http://en.wikipedia.org/wiki/Dexter's_Laboratory
[RIP Christine Cavanaugh: 8/16/63-12/22/2014] - Dexter's Original Voice Actress

This story is a sequel to Stardust

Times are changing for Equestria as Twilight’s return brings with it news of people and cultures from beyond the peaceful world everypony knows. Aid and volunteers are freely offered to help the besieged humans of Earth because every Equestrian knows that’s what good friends do. Unfortunately, making friends can also have the unintended consequence of making enemies.

When the monsters besieging the humans strike at Equestria with a level of brutality not seen in over a thousand years, the cry for help is sent to all the kingdoms of the world. Honored allies step forth to fulfill ancient treaties and oaths. Enemies, old and new, bury their grievances. An alliance never before seen in Equestria will be created to combat the monsters from the void.

And because of these events, a grim but welcome sibling to the XCOM project is born.

(XCOM/FiM Crossover)
(Sequel to Stardust, which I recommend reading before starting this. Fortitude Amicitia and Broken aren't required reading but are supplemental to the storyline)
(Gore tag for blood and violence)
(Alternate Universe tag because of the divergence from canon that Stardust has caused)
(Uses elements of Season 4)
(Coverart produced by the amazing Carnelian!)
(Many thanks to Arzoo, BradTheBrony, Vandenbz and Setokaiva for prereading!)
(As of 03/07/2016, the prereading team consists of Arzoo, BradTheBrony, Noble Cause and Metallusionsismagic!)
(Complete with it's own TVTropes page as part of the Stardust continuity. Could use some updating!)
(Character tags will be added as chapters are added!)
(Featured 5/12/2014! Thanks folks!)
(Possible spoilers in the comments! BEWARE!)

Space☆Dandy™

*Some say, that a Planet unknown to the human race, lived creatures of beauty and
sentience… It is foretold in lore, that this planet contained deities and beings of immense
power and skill that can shift reality, time and space all together, lived there. Some say that
they can even go through different dimensions every three and a half years or so. Some
even say that they’re like humans! Some say that they’re animal-like… so many “some’s”
that I forgot what they’re really looked like. But those stories have not been proven yet…
until a certain slacker, a cat and a goody-goody, stumble upon that rare world… and by not
knowing this vital information, they might as well ruin the entire story line*

(First of it's kind!! YEAH!!)

The Princesses find an alien creature barely clinging to life at the scene of a terrifying crash. Can the Combined Power of the Elements of Harmony save it, or more importantly, should they save it? Will the arrival of this strange creature tear Equestria apart?

TV Tropes
https://tvtropes.org/pmwiki/pmwiki.php/FanFic/Article2

A former pink pony finds herself in a new, hostile world and a new friend who's perhaps even more hostile. A small, angry man finds himself with a new friend he didn't want. Can they make it through this new misadventure together, or is it the universe that needs to watch out for them?

Cover art used with permission from Technaro.