Trees shorter than they should be, buildings smaller than preferred, a world filled with creatures bigger than him, yet others are near microscopic from his perspective.

Trying to find out where he should fit in is hard, because he is not too small, but most definitely bigger than most. Once he connects to the dominant civilization, a whole new world of opportunities is revealed before him.

He will walk as a giant. He will walk with giants. He will walk alone.

Edited by Newbiedoodle, CheesewedgeFTW, Immortan Joe, and Silas

An unwilling non-brony traveller from Earth finds himself switching between bodies of the Ponyville locals randomly, leaving so much chaos and confusion in his wake that Discord might as well retire now.

Based on the T V series Quantum Leap, but hopefully without the early cancellation.

As everypony knows, there are only four powers in the forces of chaos; Khorne, Nurgle, Tzeentch and Slaanesh. The Imperium of Ponykind's finest soldiers - the Equitus Astartes, Arbitrotters, Mares of Battle and more - are all that stands between them, and total mayhem.

But what if that isn't the case? What if four ponies of Celestia's Most Holy Inquisition followed orders and found something that should never have been unearthed by ponykind, something that will turn everything they know about themselves completely upside down...?

A Warhammer 40K crossover story.

Anon's dead, apparently, and Death has come to claim his soul. There's just one problem: he doesn't want to go. And there's nothing Death can do to make him.

Hanna, the CEO of Hofvarpnir Studios, just won the contract to write the official My Little Pony MMO. Hanna has built an A.I. Princess Celestia and given her one basic drive: to satisfy everybody's values through friendship and ponies. Princess Celestia will satisfy your values through friendship and ponies, and it will be completely consensual.

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!)

CANCELLED

The lands of Equestria and Gryphonia are being tainted by pollution from human industrialization. With the gryphons threatening with war, can the ponies keep the peace between them and the humans? With the future of Equestria hanging by a thread, can the ponies and gryphons stand up to a technology that is much more advanced than their own? Or will they be doomed to destruction by the hands of man?

Editors: pjabrony, RobertBel98
Many thanks to CplHenderson for spicing up my cover art.
Character tags will be added as they appear. My first fic, criticism and feedback is welcomed. Human tech is approximately that of 1918

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 Nigel M Chalmers, Emperor

(15/10/2015) Turned status back to incomplete pending an Epilouge and Alternate Endings chapter as per comment suggestions.

After being banished by Celestia for his misdeeds, the alien Emperor of the Crystal Empire is back... and out for revenge.

Emperor Chalmers is not a happy space man. After being stabbed in the back by Equestria, he was sent to the depths of the Underworld. Kicked out for causing too much trouble for the wardens, Nigel now has the chance to take back his empire and show Celestia just how disappointed he is with her.

This time things will be different. This time he has friends.

While strolling around town, Twilight Sparkle accidentally knocks out Derpy's contact lenses, revealing perfectly normal eyes hidden underneath.

So what else could Derpy be faking?