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.

During a Joint Deployment, the UNSC Infinity and Her Sangheili allies are suddenly thrown into a new Galaxy, and end up near Charon before the Systems Alliance discovers the Charon Relay. Alliances are forged and how will the galaxy react to an aggressive humanity that not only doesn't use Mass Effect technology, but will not let anyone stand in their way of expansion? AU PreME1

What happens if the Quarians take drastic measures to ensure the continued survival of their species. The Mantle helps all in need and crush the ones who prevent it. Halo/Mass Effect/Transformers/Galaxy on Fire

Captain James T. Kirk Chancellor Gorkon rescues a group of Human refugees from the far side of the galaxy. That simple act of kindness will be the spark a war that ranges across the galaxy and reveal the thinness of the veil that separates civilization fr

AU. Anakin Skywalker is captured and sold into slavery to Darth Sidious at the tender age of nine. Padmé Amidala, Queen of Naboo, faces the horrors of the Trade Federation's invasion without the help of the Galactic Senate. Both become warped by their experiences; hardened, vicious, cunning. But then they meet their match… in one another. And it changes the Republic for all time.

On the eve of the Colonies fall, a certain Model Six starts experiencing memories that could not possibly be real. Fragments from a past that could never be. It all started when she was ordered to assassinate a certain Admiral a day before the Plan was to be executed. It's too bad that she remembers him from a life a Cylon could not have lived...

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?

AU First Contact War. It was 48 years of endless slaughter and death. And from the pain and suffering of such unprecedented conflict, emerged an unprecedented plot, born of hate, to bring it all to an end...

Humanity never developed FTL. The Prothean archives contained no technology, no Element Zero, just a warning. Isolated from the rest of the galaxy for two thousand years, restricted to their only system, how will humanity have changed when they first meet the Turians? AU, alternate history of humanity and First Contact.

Multiple crossovers AvP,RvB, JC's Avatar, Star wars, Halo, Mass Effect and more. Authors 2nd apology and Cancellation on chapter 14

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.

Ever sense the two games Halo and Mass Effect have been out, there have been those that have written cross overs or discussed how the two universes may interact. Gateway Chronicles is my take on that very issue.

What are the chances of a technical screw-up bringing Earth and the Colonies together? Not very high, at least that's what Lt. Kelsey Adama thought. Yet, here she is, on the brink of history where two supposedly long lost tribes of man are reunited. But when both sides have not seen one another for thousands of years and one has no intention of playing by the rules things get messy

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.

It has been 40 years since the Great War ended the UNSC has faced and defeated numerous threats. They are the inheritors of the Mantel and the Forerunners have challenged them to claim. Set in Mass Effect 1, it shows the UNSC reconciling with the Systems Alliance, the Citadel Council, and the Reapers as the UNSC and its Allies, the Imperium try to claim and uphold the Mantel.

Long before the Traveller ever wandered into our solar system, mankind had already expanded across the stars. They did through a device known as a Stargate. During the Great Collapse however, the Stargate was lost, and mankind's interstellar worlds and allies cut off. Now, the Stargate is working again. It is time to go through the breach, and explore the stars once more.

A new Guardian is chosen, one not exactly from earth... or the solar system in general

Rebuilt over two years by a terrorist organization he swore to destroy, Commander Shepard struggles to reclaim his past, while recruiting the best the galaxy has to offer in a bitter fight against the greatest threat the galaxy has ever faced. L/V/AC

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.

Name amended due to guidelines. A clash of ideologies will cause widespread death and destruction for two races both alike and strange to the other. SG1nBSG xover

Is it possible that the galaxy is vast enough that we can get two stories simultaneously running together? How would they react if they discovered each other? Would they seek out each others destruction or would common interests sway them to work together? Only one thing is certain. Whatever happens, someone is not going to agree.

An Alternate history of the Earth Minbari war. Earth finds an unexpected ally who provides a way to beat Minbari Stealth giving humanity a chance to fight back.

280 Years after the Stargate is discovered the Alliance detect an emergency transmission from an Ancient Outpost. After an expedition reveals the origin to be the 12 Colonies of Kobol, a detailed analysis prove to the Alliance that the Colonials are not ready for First Contact. An intelligence agent is left on Caprica to monitor the Colonies, but what happens when Cylons show up?

The Federation discovers a wormhole very close to the Sol System. This wormhole goes to a place not far from Kobol... New story based on Star Trek and BSG 2003...

Just 10 years after the Interplanetary War, after Humanity is unified under the UNSC, do they meet the Turian Hierarchy in the First Contact War. After being introduced to the Galactic Community and technology which will allow them to colonize other systems, what effect will the early Halo Humanity have on the galaxy? Will they be prepared for the trials to come?

Halo AU/X-over. Humanity's first contact with extra-terrestrial intelligence goes poorly for all around...

A UNSC Cruiser escaping a deadly battle with the Covenant Onslaught and performing the Cole Protocol jumps into the middle of the Cyrannus Sector. But will the Covenant onslaught destroy the Colonials and the UNSC before they destroy each other? (CANCELLED, FOCUSING ON HALO THE IMPERIAL WAR)

Mass Effect/Babylon 5 Fusion. When Earth discovered the Prothean cache on Mars it began a sequence of events that will change humanities destiny and the fate of the galaxy forever.

Rewrite of Stargate Thirdspace. In the 26th century a group of Tau'ri ships is sent to investiage a new and strange galaxy, inadvertantly triggering a war that could lead to the obliteration of all sentient life in the universe.

After the battle the surviving crew of the Vanguard try to work out where they are, and how to get home. A slow build crossover. Not going to have much interaction with B5 early on as expand on the Vanguard and her crew.

What if the Colonial Fleet from the 2003 version of BATTLESTAR GALACTICA had jumped into the Delphic expanse in the year 2153, where it encountered Captain Jonathan Archer and the U.S.S. Enterprise NX-01?

A little male Shep/Miranda romance from Miranda's POV. Events take place towards the end of ME3 and following its conclusion

AU. A small group of Jedi flees Coruscant after Sidious's purge, making contact with unexpected allies who may be able to help them regain what was lost.

Two galactic superpowers are on a collision course. One, a union of alien races thousands of years old. The other? A race of hairless monkeys from a blue world, and their Hellbore-equipped, artificially intelligent tanks... For the Honor of the Regiment! Dead, Sorry.