Everything changes for Twilight Sparkle and her friends when a mysterious extraterrestrial ship crash lands in Equestria. When Twilight messes around in the ship's systems with her magic, she ends up transported to an alien world unlike anything she imagined: a box canyon in the middle of nowhere.

To get home, Twilight must enlist the help of the eccentric Red and Blue soldiers that live there... if she can get them to stop bickering first! Additionally, she finds herself being pursued by the enigmatic military agency known only as Project Freelancer. Back in Equestria, all is not well for Twilight's friends as forces involved with the crashed ship make themselves known. Reds, Blues and ponies will all have to work together to discover the mysterious connection between Equestria and Project Freelancer.

A crossover with Red vs Blue. Written with the intention for the story to be followable without having watched the series. (just don't expect to get all the references).

Now with editors! BradtheBrony and Rough_Draft.

I made a blog post explaining things. You should read it.

TvTropes Page.

(This is a Crossover with Halo. If that genre offends you, you need not read any further.)

Cortana has several problems, and very little she can do to solve any of them. Being stranded on half of a ship in deep space, with the clock on her lifespan slowly running out, she gets desperate enough to try almost anything.

She goes so far as to land her half-ship on a strange astronomical anomaly, in the slim hope of finding a method of FTL travel on it. Now, her latest problem consists of understanding the mind-bending physics of this planetary crime against reason, without prematurely going insane.

Chief wakes up on a new planet, and is, as always, presented with aliens he needs to kill in order to accomplish his mission.

Equestria witnesses the arrival of a large object from space, and has to deal with the fallout of it's destructive crash landing. Though the real threat the object poses is not something anypony could have anticipated.

(Knowledge of the Halo games is advised, though not strictly required.)

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Rated Teen for gore... rating may be subject to change, we'll see.
I am currently looking for an editor, pre-reader, and/or proofreader, preferably someone who can double check me on the lore when it comes up. Shoot me a PM if interested. I've got a few people who have generously offered their help. Thanks for offering to help make this as good as it can be!
Will update tags as story progresses.
Fair-warning, this story is secondary to my other one and will update less frequently.

Death. All that remains on this planet are the martyrs who gave their lives to ensure the others could escape. Humanity’s greatest has fallen. 23 Billion humans died in the war, and only more would follow. The few strays on Reach were quickly found and slaughtered. The last soldier died fighting, a fitting tribute to the planet humanity fought so hard to protect. Still, the story is not over for mankind, just as the story is not over for this lone soldier. This, is the story of Noble Six.

Coverart by CCNC, link to her deviantart http://ccncc.deviantart.com/

Edited by Escaping Reality

The planet destroyed. The flood gone and the covenant obliterated.
All because of one man, Sergeant J. Forge. The man who literally stared death in the face to save those aboard the 'Spirit of Fire'.
But what if the detonation of the slipspace drive tore a larger than intended hole in the fabric of space, essentially creating a portal to another world.
What if Forge hadn't perished on that day, but awoke to find himself in a completely new and foreign world ?

Starlight Glimmer had been forgiven for her actions and now resides in Ponyville, Equestria with Twilight. One day, she was trotting around the Library, and find a particular book in the relentlessly dark corner of the library that catches, and holds, her attention—“Forerunners.”

Red Vs Blue Xover!

Church, the Alpha, was fairly sure he would die when he went to confront the Meta. Dead or not, he didn't expect to wake up in a forest, and not as a horse. A horse with a horn, wings, modified armor, and mounted firearms- but still a horse. Because he refused to call himself a pony, no matter what the locals said or how much Tex teased him! Now he just has to try to save his fractured mind. The AIs, luckily or not, are there to help him as they explore this new world.

Meanwhile, his loud and painful(for him) entrance into their world has brought a great amount of attention to the mysterious being that is now wandering through Equestria. The ponies best tread carefully. After all, the Alpha's "pack" can be protective.

May be Harem/Marem/Herd.

PS The Dark tag is mainly for Alpha Church's canon back story.

When Luna and Twilight discover the Forward Unto Dawn, they wonder what this could possibly bring to the peaceful land of Equestria. They have no idea what could possibly be on this odd object racing to the ground.
When Cortana awakens Master Chief from his slumber, she warns that the Dawn is falling to the surface of an unknown planet. Chief must find a way to get to the ground safely and survive in this new, oddly colored place.

This the beginning of my first fanfiction. It will be a continuing story until I decide to stop. I hope everyone will be supportive and encouraging as I write this story for all you guys.

War rages in UNSC space the enemy the Covenant has been trying to stamp out humanity. When a Covenant armada comes close to Planet Onyx. Spartan Team, Foxtrot is sent into Zone 67 to see what they were after. Where Spartan-117 stays back to repel the Covenant forces trying to blast their way to Onyx.

UNDERGOING FULL REWRITE! WILL REPOST ALL CHAPTER ONCE COMPLETE!
Note: If you do not play the video game Halo, some parts may be confusing.

(This story is a based off a story called: Ghosts Of Onyx by Eric Nylund)
(Also Bungie's video game Halo (now owned by 343)

My Editors/Pre-Readers:
Sorious Red-Hoof; Per-Reader and Editor
Rainbow Dashie 99; Pre-Reader and Fellow Author
The one and only Son of the Irish Garlic, Ramseymac; Editor
Cover Art

It's been 4 years since the Halo incident, 4 years since anyone has seen the Master chief and his AI companion Cortana. But when The ship they are on is boarded by the Covenant, Cortana revives the Master chief so they can escape. But things don't go as planned when they find themselves floating around a forerunner planet and it just so happens that this forerunner planet is Equestria... [Cover art made by myhe01]

Medicant Bias, the once rampant Forerunner AI that joined the flood to destroy his former masters, is now trying to show that he is, once again, serving his masters, even though he knows that his sins were too great to be absovled too easily, he is going to try to help in any way he can... even if they are technicolor ponies.
What will happen when he gets somehow teleported to a foregin world full of magical creatures? Will he be able to redeem his past sins and help these ponies?