Under revision. When the Spirit of Fire crash landed in Equestria, a course of events was set in motion that will turn Equestria from a quiet and peaceful kingdom into a great interstellar empire. Now, in the midst of the darkest months of the Human-Covenant War, can the combined forces of Equestria and the UNSC prevail throughout the galaxy? R&R greatly appreciated.

Impossible odds. That is what the Equestrians have always overcome. With hardship comes happiness, and peace is their goal. They had always worked out differences and problems with other races. But what happens when an alien race comes along and propagates violence and war? And encourages other races to do the same? In their darkest days the Equestrians will have to stand.

Daybreaker was nothing more than a dark memory built with fear and worry. A disgusting monster unfit to exist in the real world and too shameful for a princess to understand. But what if she was given the chance to live? And could a friend walk through her flames? Could a friend become more?

Without remembering a thing, Spartan Michael Griffin finds himself in Equestria. The first to welcome him is none other than Nightmare Moon herself, who was not destroyed by the Elements of Harmony. What will the rest of Equestria do if they found out of Nightmare Moon's existence? Will Michael defend her? Rated T for swearing, blood and violence. Suggestions? Feel free to comment!

When the NCR's imperialist ways come too far, the Brotherhood Alliance of the East comes to help the battered city of New Vegas. But their power is not enough, and soon the Lone Wanderer, the Courier, and the Sole Survivor must find help from a people they could have never imagined in a land they thought never knew existed. Warning: Contains war that never changes.

After destroying the Black Garden and awakening the Traveler, Fireteam Excalibur is tasked with traveling to another solar system to make contact with a race that was blessed to harness the Light by the Traveler milennia ago. They will face dangers, make new friends, and face their destinies. Such is the Way of the Guardian. Rated T for the Hive and language.

Go to By My Side:A Rainbowdash and Master Chief fanfiction. This is a mess up.

After defeating the black heart in the Black Garden, a guardian gets sucked into the world of My Little Pony where she must adapt to a new life. Contains OC

My name's Murphy, Colonel Spartan Murphy-422. Now I've seen some pretty crazy stuff in my life. Aliens hell-bent on wiping our species off the face of the galaxy, Strange ancient technology left behind by an ancient civilization. But this takes the cake. Rated T for Blood, Violence and Coarse Language. Will add more Character Tags as the story goes on.

When Twilight and Luna discover the "Forward Unto Dawn", they quickly warn the rest of Ponyville and go with Celestia and the Elements to the wreck site what they find surprises them. When Master Chief is awoken by Cortana, he must find a way to get off of the Dawn and survive in this strange new world.

2551 During a mission to defeat the covenant, a corvette of marines is lost in transit from battle, they are scattered onto a world where war is but a lost memory. Where magic and friendship meet, here comes the UCAF marines. CH17, time to begin the first part to Siege of Canterlot, tragedy strikes the heart of Twilight and rage burns in Celestia, prepare for war!

After an accident, Master Chief is transported to Equestria. The transport causes severe events to occur, and the elements are spread across many worlds... NOTE: THERE WILL BE MORE CROSSOVERS THAN JUST HALO AND MLP.

rainbow is haunted by some nightmares of cupcakes.