The Human-Covenant war has finally come to an end. With the Arbiter leading the Covenant Freehold and a more United humanity the galaxy finally seems on it's way back to peace. Only a special object barried in ice threatens to change everything.

Fleeing from the glassing of Reach in the belly of the Pillar of the Autumn, the crew of the SR-2 Normandy find themselves stranded with their UNSC allies on a strange Forerunner constructed ring world called Halo with the Covenant hunting them. But Halo holds a secret, one deadlier than both the Covenant and Reapers combined... and it's hungry.

An answer to B1ue ange1s crossover challenge what happens when the sangheili go overkill on the reapers i made some changes to the criteria but it has a lot of our favorite hinge heads killing reapers left right center rated T for mild swearing.

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.

A lost ship, a lost warrior, and a lost mind find themselves stranded in an unknown world. Full of vast wonders, threats, and opportunities, this new world is an unknown element for a crew accustomed to war and hardship. But, all Edens fall and beyond the embers of war lay the dawn of victory. Halo/Mass Effect AU John/Cortana, Lasky/Palmer

The universe is a big place. Thousands of light-years still awaiting exploration, keeping secrets unknown to the rest of Council space. The Reapers were proof of that, as much as the Council is loathe to admit it. But there are yet secrets that even the Reapers, or their masters, the Leviathans know about. Even the apex races can be surprised. UNDER HIATUS

One day in the Mass Effect universe, A discovery is made about a twin galaxy that exists with several objects called Halos. That's right! Shepard meets Master Chief and the dudes from RvB. Warning: Contains Caboose and some language.

The Didact has been defeated. Cortana sacrificed herself to do it. But Chief is not home as he should be. Now, he has been thrown into a new galaxy, and right into the hand of a certain commander. The Shepard, nor The Spartan could stop the Reapers alone. Together, they shall change the fate of both of their universes forever. Rewrite of The Shepard and The Spartan. Dead.

What happens when petty officer Jeffrey Spartan 121 (my OC) gets glassed when he is talking With the LT and somehow Not only survive but is frozen in glass (the irony) and is sent to the mass effect universe

A halo mass effect crossover. it wont get into the crossover part in the first chapter. main character is currently Thel 'vandamee. there will be some original characters, but most will be from halo or mass effect, neither of which i own so all credit goes to 343 and bioware respectively. okie new character Belg 'Morodee he is a sangheili shipmaster :D tell me what you think.

The Age of the Reclaimers has ended. The USSC has failed to defeat the increasing flood forces and their other enemy. The Reclaimers are forced to slow their enemies down by following Cole Protocol, which leads to the discovery of an unknown Forerunner Space Station. A glitch with the station's generator causes some unexpected result for all the USSC forces.

The meeting of two galactic powers never ends happily, but for these two, this meeting may be the only way to prevent the total annihilation of both. The Mantle is not given, it is earned, and it is only earned through the gauntlet. "I am the reaper of your existence; I am the harbinger of the end. I am eternal, I am all encompassing, I am the monument to your sins."

Fate is inevitable, it is determined by the variables that make up the equation that leads to it. However a new variable can greatly change the path, and an ODST is a powerful variable.

Instead of humans and the rest of the mass effect galaxy being improbably isolated for hundreds -if not thousands- of years humanity and the Covenant is instead placed in a totally separate galaxy.

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.

Humanity is at a Golden Age of society, with all bigotry and racism removed and scientific marvels are steadily discovered and recovered from the past. All three sects of man have been found and joined after the seeds were spread across the stars by the Forerunners. However and new threat arrives to threaten the peace. AU. Rated M for all the right reasons.

Many years after losing the Human/Covenant war the remnants of humanity live on, forced to remain on their ships by their old enemy.

the newest age of super-soldiers is given a new assignment, and it looks to be a cakewalk, until a traitor kills his inductor and escapes with no evidence to prove otherwise. Whats a spartan to do? Hunt the Traitor Down, that's what! ME with my own personal twist of Halo Awesomeness. M for death, blood and gore, lots of bullets, Language, and mature situations and themes.

The Great War has ended. Spartan S-989, Marcus, is one of the many Spartans now in service to the UNSC and it's allies. When he and his companion AI, Ariel, encounter an unknown installation they're ordered to investigate. When the installation hits them with an energy pulse, their slipspace generator malfunctions sending them further than they could ever imagine.

After the Master Chief disappears through unknown means, the UNSC destroys the Didact but at the cost of Earth. Desperate to survive, they join forces with their allies and form the Human-Sangheili Coalition. Ten years later, a research facility goes dark. A nearby fleet arrives to assess what happened. What they find will change their lives, and those of another universe, forever.

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.

The remains of Team NOBLE go MIA during their mission to deliver The Package to the Pillar of Autumn. They find themselves staring down the singular threat to another galaxy: the Collectors. Follow Six as she teams up with Commander Shepard to destroy the Collectors and the Reapers. (Part 2 is up! Go look for it.)

After 100,000 years of Atonement, the Forerunners arrived at the Mass Effect Galaxy. The Reapers threaten every organic life, and in the hands of the Iso-Didact is the fate of his people or this new galaxy. Set in Pre-Mass Effect 3. I do not own the Halo series or the Mass Effect Universe.

One Spartan and his A.I. are thrown into the Mass Effect world. Read as the appearance of one man can change many things for the future of everyone

When the Cerberus ship meant to take Subject Zero to Pragia also takes a 'Prothean' crystal with them. No one could foresee the consequences that action has as the crystal causes the ship to enter slip-space and crash land on Reach. This is the story of Jack-666.