Earth is besieged by the Covenant with little hope of victory. But the soldiers of Casanova company will not give up nor sit idle as their home and the last hope for their race is burnt from above. And with the discovery of technology that has been kept secret by Acheron, the war could be won. But if it is used the consequences for all beings will be immense, and not benevolent.

Thorne wanted to make his mark, to feel that he had made a difference. Now he finally gets his chance... in a place that is not his home.

The OSA has reached hights unimaginible. soon, they shall fight a threat that is older then the forerunners. multiple crossovers

Humanity has expanded throughout the galaxy with the use of slip-space and the mass-relay network. They have endured the tests of a space-faring society but something lurks in the dark. The Covenant have dominated more races and have discovered Humanity, declaring their genocidal campaign. Is there any hope that Humanity will survive? Not your normal crossover. Multiple view points

Two years after the Human-covenant war, Humanity struggles to rebuild in its own little portion of the Galaxy, when Pluto starts to light up

Noble Six was a lone wolf. Commander Shepard was a survivour. Put them together and all you get is a crazy crew, massive weapons and wild ride dropping into hell. Buckle up, into the night.

110,000 years have passed since the fall of the Ancient Human Empire. When the Great War at last came to a close it would lay down the foundations of something that has not been seen in over 100,000 years, a resurgent people, a revived empire. But one final test remains, the Reclamation has at last begun... [AU]

The Flood, the worst threat any civilization has ever faced, has returned. With their galaxies destroyed, Commander Shepard and John 117, find themselves in a galaxy far far away. Will the Republic believe these new comers? Can they unite before its to late? As the Universe's secrets unfold, the Flood is revealed to be worse than anyone ever imagined...

My own go at a Halo-Mass effect crossover. including a Female commander Shepard, Master chief, Cortana and a rather underused Spartan, Linda-058. I plan to go from about mid way though mass effect 2 up to the end of mass effect 3. So, Spoilers abound. dropping by, having a read and leaving a review would be much appreciated. Rating may change later on but no solid plans as of yet.

With the Fall of Reach nearly complete, the Covenant sends it full might to eliminate one Spartan. With a little of John-117's luck rubbing off to another hyper-leathal soldier, she finds a new fate awaiting her beyond Reach.

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?

Human expansion, second contact.

During the Covenant/Human War, both sides lost ships. Some of them were under mysterious circumstances. Most ship losses where easily explainable as Slip-Space accidents or interference. But 1 ship, vanished during an investigation of Forerunner artifacts on 2531, was never explained.

Master Chief wakes from his slumber only to be catapulted into another galaxy, where he will meet another tireless soldier working to save humanity. Picks up where Halo 3 left off.

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

The year is 2525 during the golden age of Humanity. After centuries of expansion Humanity will encounter an alien intelligence and realize that no amount of preparation could have prepared them for first contact. Contact with Harvest is lost and the Human Race will dedicate itself to Interplanetary War once more. The Covenant has conquered more species into it's Empire.

Jastis-015, a Spartan-II, accidently lands in another universe where he must adjust to this new society and conquer foes that threaten the wellbeing of galactic peace. Even though he has no stakes within this universe, a Spartan must do his job. Post ME3/Halo 3 (Pre-Halo 4) – Decent chunk of OC characters. Not finished - Rebooted: /s/9168709/1/Far-From-Home

A hero need not speak. When he is gone, the world will speak for him. Follow Rookie the young helljumper as he attempts to piece together to how did he ended on this messed up place...

The galaxy holds many secrets. Some more dangerous then others. This is the story of some of these secrets. Set in The Last Spartan-verse, written with permission. OCs, rated for swearing and future content.

This is the timeline for TheMantleverse, and also is the archive of the many massive info-dumps I will be putting up. BEWARE: MASSIVE amounts of information inside. Risk of over-saturation present.

A story about a new team of heroes witch must defend all the galaxies by the greatest threat ,contains elements and characters from:Mass Effect,AvP,Halo,Quake4,Half Life series,Doom and lots of characters.It is the first story.Please tell me if you don't like something and I should correct it.

The USF...founded in the ashes of the Great War has spent years rebuilding. They are inheritors of the Forerunners and are ready to take hold of the Mantel...but first they have to deal with another Galactic Superpower. However, dark forces gather as these two groups fight to gain control of the Galaxy.

Master Cheif has some challenges awaiting

You've heard of Galaxy of Fantasy? Introducing the new game from Forge Games, Galactic Warlords! Play as your favorite races and armies and conquer the galaxy! Includes bad codex updates, annoying retcons, and contradicting canon! Parody of my official fanfiction Collapsing Empires.

An epistolary novel which recounts the personal stories of those involved in the war against the Flood. (Based off "Lost Legacy")