What if UNSC replace System Allience from Mass Effect

Two worlds collide, neither prepared for the other. The Solar Sphere Congress -successor to the long gone Earth Federation- unwittingly starts a galactic crisis when it makes first contact with a very angry, very trigger happy Turian Hierarchy.

Reach, el bastión de la humanidad, ha caído. Uno de los Spartans del equipo Noble se quedó atrás para proteger al Pillar of Autumn, El es conocido como el Fantasma Viviente, el Lobo Solitario, la Parca Personal de la ONI... o simplemente, Noble Seis. Ahora, lejos de su hogar y su tiempo, deberá levantarse una vez más. No solo por un planeta. No solo por una especie. Una galaxia.

On the way down to New Mombasa, Rookie falls into the Slipspace Rupture and ends up crashing down on Menae, high above Palaven, right in the midst of the Reaper War. From there, the war itself will shift and the fighting persists, but who knows what an ODST will add to the mix. (Redo of an older story)

Flynn Taggart once had a different life, one he could remember before becoming the Slayer. But he has long since put that behind him. Killing the denizens of Hell had become his new reality and he accepted it completely. After vanquishing the Icon of Sin, he was catapulted into another universe he knew from his old life. Now he has new, yet familiar, enemies to Rip and Tear.

A warrior estranged from the lands he fought to save. Facing an expanse far larger than he could ever comprehend. That however is irrelevant, for he is not just a Guardian, he is a Titan. He is a warden against evil and a shield for the weak. No matter where he is, no matter his circumstances. He will fight, for that is what he was reborn to do.

Two Years have passed since the Paladins and the Normandy had suffered the tragedy of loss. A year since the Altean's have begun to return to the galaxy after the second battle of the Citadel. But the Reapers are not done as the Paladins and a revived John Shepard must gather allies to face this threat. This is their Rebirth into a new world of wonders as Heroes. NOW FORM VOLTRON!

More than five years after the Reaper War, Jane Shepard had lost her life for her galaxy, while Garrus Vakarian struggles to move on from the loss of the love of his life. But when Garrus begins to suffer strange dreams, the Normandy crew are thrust into a conflict that has lasted since the beginning of time. All the while a strange voice begins to tempt Garrus with… Salvation.

Two collections of civilizations on separate sides of the galaxy. Both having fought wars and calamities alike. Going through their own advancements, trials, and wars. Soon they will be brought together, to fight on the same side. (ME/Kancolle/Stellaris Fanfic)

A crossover between Mass Effect and Cthulhutech. Humanity has won the Aeon War and has since expanded and thrived. How will the galaxy fare with this new power?

Long ago on earth demi-humans appeared on earth. Now expanding into the galaxy the other races have to deal with both humans and demi-humans. Mass effect story from beginning to end but with monster people to make it more interesting. Experimental, possible harem

Anthon fankhauser y John Shepard son dos individuos reconocidos por sus respectivos gobiernos como héroes de renombre, la única diferencia es la escala en la que operan, uno a salvado a un sector entero mientras que el otro a salvado a una galaxia entera, que ocurrirá cuando el primero se encuentre con el segundo.

Hundreds of millions of years ago, Humanity, Forerunners and the SanShyuum, the tier-1 species protected the galaxy. But the peace never lasted as the threat of flood and the reapers brought the Milkyway to the edge of extinction. Now the warriors of the past needs to guide the future galaxy and stop history from repeating itself.

A foul mouthed schoolbus driver dies and is reincarnated into a universe that is a fusion of Pokemon And Mass Effect. After firing the crucible he alongside his Pokemon find themselves in the Young Justice universe. There's going to be some changes around here.

This fiction has different type of mass effect crossover ideas and other types as well, read and review if you like the series I wrote it. Next Update Persona 3 reload x cyberpunk Edgerunner.

That time I became an agent of the IMF tasked with completing missions across all of time and space. Killing monsters, fighting villains and saving people by derailing canon events. SIOC x Miranda Lawson x multicross girls.

A year and a half has gone by, since the attack on the Citadel. Team RWBY and the crew of the Normandy suffer a tragedy. Ending in the loss of many lives. Awakened now a few years later. The girls of team RWBY, Elizabeth Shepard and their new allies must fight against a threat. One even more dangerous then the last. This is their Rebirth into a new world of wonders and insanity.

A young soul was given a second chance by the Grim Reaper, to give them aid with the current problems with the world of Mass effect. Granted the power of Gamer and a new form, along with an army, she will be the fiery blade that protects the weak and cull the wicked of this galaxy. RTS Gamer, Nekomata Youkai protagonist with Warcraft 3 powers/army (thicc busty OCs).

Five Years have past since the destruction of the Normandy and the death of Commander Shepard. Now a new order is rising in the unmapped regions of the galaxy which is leaving unease in both the Republic and the Citadel. Determined to find out what is going on, a pro-human organisation has made plans to find out what this mysterious group wants.

After the attack on the Collector base failed, the Normandy SR-2 found themselves on Ark a planet roaming with primordial beasts. But as their Commander returns, things become more complex as they learn about Ark and the reason they are there and the purpose of the world.

After Soverign's defeat, the sibling Commanders left to clean up the mess it left behind. But one of them was struck down by an unknown force. The next 2 years they go in search of the ones responsible, unknowing that a secret group is bringing their sibling back to life to fight the Reapers again. How will they react when they meet again? NaruxTali, Shakarian, Mature content later

Darth Vader attempts to resurrect his deceased wife through an ancient ritual, but is pulled into the machine and transported to an unknown planet. On his quest to return home, he comes across a Quarian woman named Tali'Zorah, who just so happens to have information about a rogue Spectre Named Saren. The two form a strange duo as they venture on a quest to save the galaxy.

After witnessing the death of his oldest friend, an immortal Harry Potter turns to the stars in an attempt to find meaning in his life.

Six months prior to the worst crisis the normal Milky Way would face, Commander Shepard hunts the Collectors abducting human colonists in the Terminus Systems when she comes upon a terrifying new sight:Three Intergalactic fleets arrayed against each-other and her sole Frigate. Three new factions, one seeking a home and two seeking answers, all linked by the Star Roads.

When the Battlestar Galactica, guided by Starbuck, makes the jump towards Earth, they find a planet encircled by giant black ships and a woman calling herself Commander Shepard telling them to leave before the Reapers attack them. With Earth not the safe haven they'd hoped for, the Colonial Fleet and their Cylon allies struggle to make a place for themselves in this new universe.