Yes, there is a crossover tag, but read down to see why it's there.

Alexander Laythem is a master engineer who lives in isolation with his AI assistant, Rose. Unforeseen events result in these scientists and engineers traversing the boundaries of reality to a world that was supposed to be fictional, forever losing their place in the human world. With the help of some of the friendlier of the native inhabitants, Alex and Rose plan to rebuild and pick up their research where it left off. But as more knowledge is gained and technologies are developed, an ancient power with an insatiable hunger for control awakens, hell bent on bending reality to its whims with the single goal of creating and maintaining the perfect society. Takes place largely during season 2.

Rated teen because of the occasional use of "strong language." Also, if you're going to favorite it, please go ahead and leave a like as well! I truly appreciate each and every one!

I've added the dark and gore tags as of chapter 39: Full Force Forward. Should be worth noting that I will downplay the gore as much as humanly possible. It's not the focus of anything, but it's there. Most of the technological aspects are referenced from the Unreal franchise, hence the crossover tag. Keep in mind, however, that crossed-over elements from the games largely take a back seat and only serve as inspiration and setting. I'm focusing on the plot itself to make it as good as I possibly can, and I'm always going over it to fix little things here and there.

Special thanks to amazing Rocinante for pre-reading and editing!

*First featured on 7/29/14!*

For as long as the oldest of them could remember, the Guardians had defended what remains of humanity against the forces lurking in the dark. With gun, blade and the Traveller's Light, the heroes born of Earth put themselves between the monsters from the void and those too weak to fight back. Human, Awoken, Exo; the physical coil of the Guardian had never truly mattered so long as they were willing and capable of defend their homeworld.

Until a Guardian came from the wastes that was neither Human, Awoken or Exo; a Guardian not born of Earth.

(Destiny/FiM Crossover)
(Gore tag for blood and violence)
(Thanks to Noble Cause, BradTheBrony and Metallusionsismagic for prereading!)
(Possible Spoilers in the comments, BEWARE!)

It was a bright sunny day when Princess Celestia was taken from us by three very familiar fillies... Or was she?

Idea from Rated Ponystar and Edited by Jumbled

This story is a sequel to What I've Done

This is the third book in The Humanity Within Trilogy. If you haven't read the other two books first, go back and do that now. Don't worry, this will still be here when you get back...

Also, if you've already finished this trilogy, you should be happy to know that the next book in the series, A Darkened Sky, is out right now! Go read it, follow it, and all that stuff!

I don't know what to believe anymore. I was sure they were all monsters, all demons bent on destroying any peace I and my new friends might find in this life.

I was wrong.

Instead of burning this world down around me, their weapons are pointed away from the planet, not towards it.

As if that conundrum wasn't perplexing enough, I also have to deal with finding my own place in this odd, yet familiar society. But how does one simply go back to being normal? Especially knowing that the real monsters that caused this mess in the first place could be just around the corner?

After all, it's not like I'll ever see my home planet again. They may not be here to hurt me or my friends, but I still don't trust these 'friendly' aliens to get me a ride home...

This story is a sequel to New Beginnings

Human turned Unicorn Blank Page is finally settling down in his new form and home and life is returning to normal. What a normal life is however might be relative, especially when you suddenly changed species, are living in the castle, dating a god-princess and is followed around by changelings.

Warning: Contains enough slice of life to make a entire cake of life.

Continuation can be found here: http://www.fimfiction.net/story/332488/consequences

AN// All the thanks to people over at Spacebattles.com for helping me beta.

AN2// Many thanks to mix-up for the coverart. His user page can be found here: http://www.fimfiction.net/user/mix-up and the deviant art page can be found here:http://amalgamzaku.deviantart.com/

A magical accident has a human end up in Equestria in the form of a unicorn.

Warning, Spoilers in comment section.

Cover art by: Sipioc

AN// All thanks to the people over at spacebattles.com for betaing.

Sequel can be found here: http://www.fimfiction.net/story/306592/normal-life

An older, wiser Trixie Lulamoon just so happens to have a somewhat above average student named Sumac Apple, whom she takes to meet with Twilight Sparkle, as Twilight is holding a contest, looking for the best and brightest students.

Sumac Apple just so happens to have a Horrendous Hypothesis that will not only change the lives of himself and Trixie, but holds an ominous warning for all of Equestria.

An entry in the Weedverse.

One night, before Hearth's Warming Eve, Princess Celestia goes to light a fire to keep warm.

A voice in the chimney asks her not to do so.

WHY HULK HERE? WHY PUNY PONIES ANNOY HULK? ALL HULK WANTS IS TO BE LEFT ALONE!

After an massive space battle, Banner finds himself in a colorful land. A land where he doesn't need to be angry. Will he finally find a world where he has no need for rage? Or is the Hulk's wrath absolute?

Hulk will be Hulk, but Banner will be a lot more relaxed and in control of his rage. For a while.
I OWN NOTHING!

Cloud Strife finds himself face-to-face with the truth about his past - both the lies and his own failures. In what can only be a surreal dream fueled by the Lifestream and his Mako Poisoning, he allows himself to be pulled away deep into the Lifestream's green glow. What he isn't counting on, though, is being dropped into a world of odd, pastel quadrupeds the likes of which he's never seen before, his memories shattered and missing.

(Final Fantasy VII x My Little Pony: Friendship is Magic.)

NOTES:
*Takes place between Seasons 2 and 3, as that's when I initially began writing this piece.
*Alternate Universe tag is present because this story invalidates all Trixie-related episodes except Boast Busters.
*Gore tag is present mainly for one scene with minimal description that may still push a boundary or two. This is not a Gore-centric story.