The Citadel Council and the Systems Alliance fight for survival against the Reaper onslaught. However, the UNSC, politically divided and still recovering from the Didact's assault discovers a Mass Relay that will force them into the fight and change the course of galactic history forever. The Reclamation has already begun, and we are hopeless to stop it. ME3/post Halo 4

After discovering an ancient artifact, the UNSC's most advanced warship and a Sangheili Assault Carrier are transported to a universe unlike anything they have ever seen, and forced into a war against a foe they never could have imagined.

Adam Jensen finds himself in a time only dreamed of in vids, humanity is now part of a great galactic community that fears synthetics, and he struggles to find his place within it. Note: Primarily a DX/ME crossover, with elements borrowed and integrated from other Square Enix franchises.

Spartans never die, they say. When Jorge gave his life to save his home planet of Reach, he never imagined that he would survive. But now he finds himself neck deep in the troubles of another universe; he will do what he has been trained to do, what all Spartans do best: fight.

In 2157 a Citadel Council exploratory vessel is tasked with opening a dormant Relay into unknown regions of the galaxy. What they find is something they never expected. What happens when two civilizations centered around different technologies clash?

Commander Zach Shepard begins the adventure of his life as he becomes the first human spectre and is sent to capture Saren Arterius before he brings destruction upon the galaxy. During this journey, he'll make friends, destroy enemies, grieve for his losses on Akuze, and find new meaning with the help of a quarian engineer. Eventual Shepard/Tali romance. V,L

The year is 2650, nearly a century since the end of the Great War and the fall of the Covenant Hegemony. In that time great advances have been made in both technology and society, and the new government of the New Species Alliance enters a golden age. But, there are dark stirrings out in the vastness of space and soon Conquerors must rise again from the ashes of war.

Decades have past since the Ethereals threat was defeated and humanity has emerged united and stronger than ever for the conflict it faced. Now after discovering the Prothean Archives on Mars, humanity is about to end up on a much larger stage than it ever expected to play on when yet another alien threat comes knocking. And again, X-COM stands ready to fight. ON HIATUS

In the year of 2581 the UNSC stumbles across a discovery hidden beneath their noses and now a new gateway to life outside of the Forerunner space is opened and with it comes all new challenges and rewards. Its time for First Contact. OC centric, some world building as needed and war. Lots and lots of war. Rated T for blood, language, violence and gore.

Ten years have passed since the Human-Covenant War ended and the birth of the Species Assembly has brought peace to the Galaxy. Or, at least their part of it. The discovery of a Mass Relay sparks yet another war that will have consequences for all sides involved. The Galaxy will never be the same. Disclaimer: I do not own the franchises.

Decades have passed since the devastation of the Human-Covenant War, with both factions forging new bonds with each other and other foreign powers that reach the galactic stage. Years after meeting a species remarkably similar to humanity, a relic is found in the icy moons of Harvest. Little does the galaxy know that this find would ignite wars for both power, and survival.

The Reapers have been harvesting the organic races of the galaxy since time immemorial, but the galaxy is a big place; even they cannot cover everything. Within the myriad cracks they left, the Forerunners and humanity arose. What will happen when the UNSC encounters the numerous other races of the galaxy, just in time to witness the Reapers' return? AU. Post-H4/pre-ME1.

Thirty-five years have past since the end of the Human-Covenant War. Having reclaimed most all its previous glory, the UNSC exploration locates a massive artificial construct in the outer orbit of a star. While investigating the object alongside their Sangheili allies, new aliens come forth from the construct and bring humanity into a fate they never expected. ON HIATUS

When you become an extragalactic entity, meeting other galactic civilizations becomes an inevitable occurrence, and First Contact rarely goes well for the less-advanced society. Pre-ME through ME3. Rated T for language and implied sexual situations later on. Extremely Light parody on Halo OPness AKA Halo tech taken to its logical conclusion.

Following the Human-Covenant War, Humanity finds a buried device that allows trans-galactic travel far faster than Slipspace. It was heralded as the greatest scientific find in Human history; the rest of the galaxy simply calls it the Mass Effect. Now mankind needs to forge a new place for itself among the stars.

"We fought, we bled, we died for our inheritance. We were Gods, and we were finally ready to pass down our Mantle. Then we were betrayed, vanquished from the stars and blotted from history. We have learned from our mistakes. We understand why the Precursors did what they did. We are the Reclaimers, and we will ensure that you face true retribution for your actions." ABANDONED

Centuries after the end of the great war, the UNSC and Neo-covenant now live in peace, but what happens when they discover not just one but two splinter fraction of humans? The System Alliance and their Citadel and Prehistoric humanity and their old allies. But with their welcoming appearance, so will ancient threats loom around the corner ready to wage war...

The Prothean empire left a great many Beacons behind after there fall, there purpose, to warn the younger races of the dangers of the Reapers. Unfortunately no one could understand them. What would happen if someone could.

Mass Effect 2 centric story with Spartan B312 as a main character. While struggling to forgive himself and find peace, a certain Quarian may be the only one capable of showing it to him

When the Ark was destroyed, the Dawn wasn't just left stranded in space. It was propelled through time and space... into another universe. When John Shepard gets a message from the Illusive Man telling him about an unknown craft in the far reaches of the galaxy, the Normandy goes to investigate. The Reapers have someone new to fear. Spartan's never die. They just go MIA. ON HIATUS!

Imagine a Halo/ME Xover where humanity didn't: become BFF's with the elites, stomp the turians at Shanxi, become besties with the quarians, defend the krogan and true geth against the EVIL council and then kick said council to the curb. Imagine it didn't become just a retread of the first game. Imagine it didn't start with a timeline. This is my attempt at that.

In the 26th century humanity along with the sangheili, san'shyuum formed the Orion Systems Alliance the center of galactic government in the orion arm of the galaxy, soon the OSA will meet the citadel council and discover a billion year old secret.

With the destruction of the Temple Ship humanity knew peace. XCOM never forgot their motto however, 'always vigilant, always reliable'

An Asari Deep space exploration craft discovers an unknown wreck in space, meanwhile the UNSC Gorgon is sent out on a scouting mission into the lost outer colonies.

SPARTAN-333 finds himself in the Mass Effect universe with his A.I companion Tanya. The SPARTAN Still haunted by the fall of Reach and everyone around him, a certain Quarian may be able to give him the peace he is striving for. Rated M for strong language. RE-UPLOAD Dont bother to comment of past mistakes on the chapters.

In her twilight years, Tali is interviewed and tells the story of her life, and the man she would love. Focuses on Tali, and her relationships with the Normandy's crew, as well as the destiny of her people and the geth. Contains language, violence, romance, religion and spoilers. Officially AU now. Updates every four days, rain, shine or apocalypse!

Nearly one hundred years after the Battle of the Ark, a recovering humanity makes a discovery that will change their view of the galaxy.

When everything you once cared about is dead, what is left to fight for? When John Shepard is reassigned to the Normandy, he is set onto the greatest adventure in his life, facing adversity, an unconquerable darkness, and the fear of losing everything he cherishes. Follow Shepard on his tale of hardship, bravery, and perhaps even love. /Warning: Does not follow canon!/

On the dawn of the 27th century, the UNSC discovers a Mass Relay, and unlock its power. What follows not only includes making contact with new species and making new friends, but making new enemies as well, and the entire galaxy will shake.

Shepard and Tali before the suicide mission. Rated M for sexual content.