Una linea de tiempo según yo, un tanto mas orgánica entre ambos universo.

Co-written with aDarkOne History, a single event, can alter so much, let alone two. The San'Shyum are no more. The Krogan Empire stands strong. Humanity is now a giant among the stars. With three Galactic Superpowers in play, will an encounter see a new Golden Age, or an Era of War? (Chapters 1-12 being rewritten)

The year is 2597, ten years after the Insurrection came to an end, and the UNSC now reign supreme over all Humans in the galaxy. But now, the Outer Colony of Harvest has come under attack from a conquering alliance of alien races; the UNSC must resist them and claim it's place in the galaxy.

Sangheili Arbiter Thel 'Vadam has fought the Flood and The Prophet of Truth. Commander Jane Shepard has fought the Reapers and the Collectors. Both are leaders, warriors, and survivors, but while the Arbiter knows the price of galactic genocide, Shepard does not yet understand it, nor does she understand it as the Arbiter understands it. But she will be forced to understand.

War never changes Sometimes, no matter your race or creed, you forget what's worth fighting for. War does that to everyone. It's vital to take a moment, any moment, and remember how each of those little moments we experience every day, make life worth living. And wars worth winning. Short story taken from my main xover

Fighting off extinction Shepard must find the legacy left to humanity by the Forerunners. And find a way to defeat both the Reapers and the Prophet of Truth from gaining the power to destroy all sentient life in the Galaxy.

When the Sublime Transcendence was destroyed by a Nova Nuclear Space Mine, a fleet in transition to Slip-space had its navigation systems overloaded, the result was that the fleet was sent of to Sanghelios. Or is it? Join Fleetmaster Vadamee and his sister in the Mass Effect universe, as they show the council races what the Blood of Honor means.

In another universe, in another time, humanity faces total annihilation at the hands of an unstoppable alien threat. Colonies razed, populations slaughtered, entire worlds burned to ashes and glass. Yet hope perseveres. In one of their darkest hours, a Harbinger of Salvation comes, from another universe, from another time, shepherding a peculiar flock.

The Master Chief and Cortana find themselves in an alternate reality and in contact with a mysterious black ops organization. Events soon spiral out of their control as they're forced into another battle for another humanity's survival.

In a hunt for raw materials for their people, Quarian explorers open a new mass relay. What awaits them on the other side is nothing they could have ever expected. Pre-Mass Effect 1, Post-Halo 4; AU only where necessary to mash two universes together and create something resembling a coherent storyline.

Humanity is in turmoil, locked within the vicious civil war known as the Insurrection. With the CMA and UNSC forces at their limit trying to quell the insurgency, will they have the strength to fight back against a new enemy, one from beyond the stars? That answer is up for debate, though if anyone of humanity's soldiers have anything to say about it, that answer will be yes.

As a Spartan, it was my duty to protect Humanity, whatever the cost. Now, the stakes have been raised as I no longer have to protect just Humanity, but the entire galaxy and all of its inhabitants. At the side of the First Human Spectre of this new Galaxy, I will succeed in defending the galaxy, even if it results in my death...

The death of a minor demon tears a hole in warp space, sending the Master Chief, a Dominion Ghost, an Inquisitor of the Imperium of man and their companions into the Reaper-verse. On the bright side, Shepard gains some powerful allies. Contains some language, decent amounts of violence, and several OCs.

An Elite found his way into the Mass effect universe and more than once. He has grown fond of his new life, though memories still haunt him. When he finds himself on the Normandy, everything gets rather interesting for him, but for better or worse? Rewrite started. Please enjoy.

A survivor of Reach fights the Covenant, or what's left of it, on an unknown space station. One-shot.

Just a fun little Fusion Fic one-shot I did based on the coincidence of how these two popular Sci-Fi shooter series both have a lovely brunette named Miranda in them. Set in a world where the UNSC and Citadel races have been at war with the Covenant, and a chance encounter with a woman who shares her name changes Miranda Keyes' life forever. Easter eggs abound.

An AU bit in an RP with fallen-warrior1023 where everything goes wrong.

A shared little moment in time between two soldiers. Edit: To clarify, this was a little piece I wrote for a friend of mine in a crossover RP we've been doing.

A full codex dedicated to the characters, cultures, places, objects, times, etc., related to the Concordian Cycle starting from Book One: Dawn of a New Age. Will be constantly updated alongside the books to fit with the details of the series. Please read the series first if you wish to gain a greater understanding. On Hiatus

SPARTAN-A073 and B158 are thrown into the Mass Effect universe after a freak slip-space accident. They're mysterious and shady outcasts, keeping to themselves. This might be normal to them, but to the Shepard's crew, they're unknown variables. (REWRITE: ISOLATION). DISCONTINUED, ALRIGHT?

Escaping in the Normandy, Shepard and her crew was hit by the shockwave and somehow flung through space and time into another dimension entirely. They end up in 2551 and crash land on a planet under attack by Covenant forces. OC crew member involved. Alternative Universe story.

A aged old man tells his grand daughter about the legendary Spartan that is Commander Shepard. Part 1 of 8 of the Man Of War Series. Prologue of the series.

"I swear to protect Earth and her colonies."That is an oath made by 75 children,75 children that were trained to serve Earth by becoming the best soldiers know in the history,and even throught that Master chief,AKA Spartan 117 is not in the same Universe anymore,he intend to fulfill this oath that he made so many years ago...No matter the price for it.

The Mass Effect and Halo universes embark on their first real mission together...but they have to make it through the debriefing first.o

The year is 2551. The Initiative is scattered across the galaxy, trapped between a desperate UNSC and a near-victorious Covenant; the same alien alliance which seeks to dominate or destroy any new species it encounters. Sara Ryder, though but a young woman, cannot afford to falter once the fate of 100,000 innocent lives is thrust upon her shoulders.