This is a crossover between Mass Effect and MLP:FIM. Some liberties have been taken in interpreting the end of the third game.

Time...Time is priceless. You cant change the past, but you can change the future. I learned that lesson after my brother Sam died in the car crash. I was in the car when it happened...These strange powers rushed through my body letting me escape. I should have died and my only regret is that I couldn't save him. I promised myself when I became stronger I would save him, but will I? After I escaped the crash I was somehow thrust into a whole new universe.

In the past few days the skies have been odd. Two new constellations have appeared in the sky, both moving, and both worrying. What could these bring?

More seriously:
What could possibly go wrong with new celestial bodies showing up?
(Warhammer 40,000 Crossover)

After being framed of being Anon-a-Miss, Sunset Shimmer as received a Yu-Gi-Oh! deck from Maximilion Pegasus, who invites her to take part in the Duelist Kingdom. With a help from her new friends, she decided to take part in the tournament to duel to find ten star chips to enter the castle for the tournament finals.

Will she win, or will she be eliminated from the tournament?

This might be the first Anon-a-Miss with Sunset Shimmer is bisexual.

A breakthrough in science appeared in Opelucid City's laboratory, allowing one to see beyond the dimensions of their own.

Then, Arceus's exodus occured. Due to the nature of the equipment in the lab, the destination of the lab workers had shifted towards a different destination. Now, Mono, Lith and the other Pokemon and former humans have to unite with the residents of a futuristic version of Equestria so that they can survive underneath the shadows of a new dimension filled with less than friendly alien contact and ancient secrets.

NOTE: Alternate spinoff of Zeusdemigod131's A New World, A New Way. Preread by Warrior_Princess and Zeusdemigod131

This story is a sequel to Harmony of Heroes: Ultimate Multiverse Explorers

Additional tag: Anthology

A compilation of stories happening in the universe of Harmony of Heroes: Ultimate Multiverse Explorers. They will be about anything, anytime in the timeline, canon or not.

My name is Zach, I'm just a normal guy living in a normal apartment and then... one day i wake to find nothing, nada, zilch. Everybody's gone and I'm a pony, a FREAKIN' PONY! Well, you get the pleasure of following me through the world humanity left to the ponies.

It was an ordinary day in Ponyville, and even more so in the Golden Oaks library as Twilight and Spike re-shelf all of the books. Through magic fire, Princess Celestia has a sent to Twilight a new book and letter, instructing her to learn from the rather old tome.

Eager to learn new magic, Twilight set herself to reading the tome, and immediately tries to perform the first spell, believing it to be a variation of her teleportation spell. However, the spell backfires on her in a big way, and sends her sailing into the void.

When she wakes up from her unexpected journey, she finds herself in a new a place she's never seen before, and looks around to find any other ponies. She's unaware that her presence has alerted something beyond her vision, something very, very dangerous. How will she handle the monstrous creatures that lurk beneath the earth under her hooves, and will she live long enough to make new friends?

It is the 41st Millennium in the Equestrian Imperium. It has been nearly 10,000 years since Empress Celestia banished Nightmare Moon, thus ending the Lunar Heresy. The Goddess-Empress of Ponykind senses Nightmare Moon returning to conquer the Equestrian Imperium. Space Marine Librarian Twilight Sparkle is summoned by the Empress to find five more Space Marines across the galaxy to eventually face Nightmare Moon.

Now, Twilight Sparkle and her trusty cyborg baby dragon assistant, Spike, travel the galaxy in search of these five ponies. Little does she know that in many parts of the galaxy, there is no harmony. In many parts of the grimdark galaxy...

There is only war.

(A Ponified Warhammer 40k fanfiction I hope to complete someday.)
(Thanks to Angel of Speed for proofreading this, and to Matthais Unidostres his support.)

When a mysterious comet changes the already rather abraisive dragons of Equestria into seemingly mindless titanic beasts of destruction, the inhabitants of Equestria are forced to flee for their very lives. Driven to the frozen north the survivors dig in and prepare to make their last stand in the Crystal Empire. Fortunately they have a new weapon that can hopefully match the dragons power. The giant mecha know as Sleipnir.

( now with cover art drawn by myself )

( Dark tag is for possible character death and ample amounts of gore. If you gonna fight monsters its gonna get messy no? )

( This story is not exactly a crossover. Its more of an amalgamation of sorts between MLP and ideas inspired by Pacific Rim, with a heavy sprinkle of mecha anime thrown into the mix, because my muse is a mecha junkie. Tags and rating may change depending on future chapters. )