Halo and Mass Effect Crossovers
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Heroes of the Stars by Kamzil118 reviews
The Arbiter and an ODST, Farseer Taldeer and Logan of the Ghost squad, and Blackburn of the 1st Recon Marines. All these people find themselves in the Mass Effect Universe with an unexpected way that brings them together. Commander Shepard will need all their help to fight the Reapers. For those who have seen this story before I have rewritten it to fit the Mass Effect 2 setting.
Rated: T - English - Sci-Fi/Adventure - Chapters: 16 - Words: 54,237 - Reviews: 59 - Favs: 53 - Follows: 69 - Updated: 4/16 - Published: 7/21/2014 - Arbiter, Rookie, Shepard (F), Tali'Zorah
Where Titans Tread by JLake4 reviews
"What importance do the machinations of mortals hold? They scheme and plot, but see their actions lead only to death. Whose death is not important, the grave shall still be filled." [Sequel to Divergent Pasts]
Rated: T - English - Sci-Fi/Suspense - Chapters: 12 - Words: 51,274 - Reviews: 38 - Favs: 30 - Follows: 37 - Updated: 4/15 - Published: 2/13 - Arbiter, Garrus V., Shepard (M)
Desolation by hunter 139 reviews
An ODST awakes in a Pelican crash site on an unknown planet and tries to uncover the fate of his squad. Instead he uncovers something better left buried. Based off of an old Halo 3 machinima. Multi-crossover.
Rated: T - English - Mystery/Suspense - Chapters: 12 - Words: 23,620 - Reviews: 16 - Favs: 10 - Follows: 17 - Updated: 4/14 - Published: 2/19
Of Our Time by Korten reviews
On the day of the 100th anniversary of the conclusion of the Great War, a lone ONI agent is sent to retrieve an artifact and bring it back to the ONIRF, Trevelyan. However what lies inside is something unexpected, ancient and alien. Join ONI Agent Garret Elphick along with his mysterious companion as they solve the greatest mystery of his time. Where did the Master Chief go?
Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 13,125 - Reviews: 13 - Favs: 22 - Follows: 40 - Updated: 4/13 - Published: 4/6 - Master Chief/John-117, OC, OC
CSA : Plains of Glory by I-IRONMAN-I reviews
(Multi-crossover) The Galactic War has passed. Some years after his disappearance, Kholo returns in a rampant and deadly search for an ancient Forerunner artifact. However, there is something much more sinister at work and his actions will carry much weight in the end.
Rated: T - English - Sci-Fi/Adventure - Chapters: 6 - Words: 21,130 - Reviews: 2 - Favs: 5 - Follows: 7 - Updated: 4/13 - Published: 1/12/2014 - Arbiter, OC, Saren A.
Hunting Ghosts by Mediam Noctem reviews
The Master Chief has gone missing. Colonies have been mysteriously attacked. Jameson Locke has been tasked with completing the impossible, hunting down the Master Chief. But when a newly discovered artifact sends him and the Infinity to a different galaxy, Jameson Locke must escape an Ancient Evil and complete the mission at any cost. But how far is he willing to go to do so?
Rated: T - English - Sci-Fi - Chapters: 1 - Words: 3,194 - Reviews: 5 - Favs: 11 - Follows: 19 - Published: 4/12 - Master Chief/John-117, J. Locke, Shepard (M)
Legacy Effect: Siege of Tuchanka by Lord Hierarch reviews
One-Shot: "Praise the Forerunners who watch over us for the lives we avenge from this day onward. Let us scorn the Krogan! Let us trample their pride! Let us break their will! Once again raise the flag of salvation! Onward warriors of the Covenant! Onward heroes of Sanghelios!"
Rated: T - English - Chapters: 1 - Words: 1,253 - Reviews: 3 - Favs: 4 - Follows: 7 - Published: 4/11 - Complete
Gateway Chronicles by Robert Lee reviews
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.
Rated: K - English - Sci-Fi - Chapters: 11 - Words: 32,834 - Reviews: 32 - Favs: 70 - Follows: 121 - Updated: 4/9 - Published: 11/14/2014
Heart of the Storm by Aleixo reviews
Reach has fallen and Noble Six is all that remains on the planet. In a valiant last stand Six mysteriously finds himself in the world of another. How will he come to terms with it? What will he do? Can he overcome his loss and find peace at last? Six pairing is yet to be decided. Plan to span over whole mass effect series and possibly beyond.
Rated: T - English - Adventure/Romance - Chapters: 10 - Words: 15,830 - Reviews: 43 - Favs: 51 - Follows: 87 - Updated: 4/9 - Published: 3/4 - SPARTAN-B312/Noble Six, Garrus V., Tali'Zorah, Shepard (M)
The Reclamation has already begun by Fade Maybe reviews
The Requiem Event has ended. The Reaper War has reached its climax. In later year of 2557 Military Calender and 2186 Common Era, the UNSC finds itself on the brink of a new front in an uneasy, fearful alliance. Yet light will shed upon questions the Forerunners left behind. Ancient threats rise again. This is only the next step in the Reclamation, and it is too late to stop it.
Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 11,785 - Reviews: 35 - Favs: 115 - Follows: 165 - Updated: 4/8 - Published: 1/4
Humanity at War: Earth's Last Stand by EliteOp reviews
A hero from another time wakes up in a whole new war. Except this time the commander is not the main protagonist.
Rated: T - English - Romance/Sci-Fi - Chapters: 6 - Words: 4,353 - Reviews: 6 - Favs: 5 - Follows: 7 - Updated: 4/8 - Published: 1/24
The Sum is Greater than its Parts by Maersikai reviews
Having long since combined forces, a fleet of the Humans and Covenants finest are torn from the universe they know to be thrown in to a strange and desolate reality. They will strive to uphold the Mantle when faced with a strange set of aliens and humans facing a galactic threat.
Rated: T - English - Sci-Fi - Chapters: 11 - Words: 111,169 - Reviews: 143 - Favs: 339 - Follows: 418 - Updated: 4/7 - Published: 3/2 - T. Hood, Cortana, Shepard (F)
Resonance by SounDemoN reviews
Crossover of Halo, Half-Life and Mass Effect, AU for all three. 27th Century Humanity encounters the Reapers and the Council races, while dabbling in teleportation technology, unknowing of the slumbering beast they would awaken. Rated K for the time being, will be upgraded as needed. I own none of the used existing fictional universes/characters/tech/stuff. Will add a cover later.
Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 52,379 - Reviews: 35 - Favs: 70 - Follows: 92 - Updated: 4/6 - Published: 2/23
Alternate Past, Uncertain Future Mk II by Follower38 reviews
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)
Rated: T - English - Adventure - Chapters: 32 - Words: 279,514 - Reviews: 667 - Favs: 516 - Follows: 646 - Updated: 4/6 - Published: 8/28/2012
Deliberate Consequences by TheEpicBro117 reviews
A UNSC expedition to deep space causes consequences for both sides as humanity reaches for its rightful inheritance. Please take it easy on me with the reviews as this is my very first story.
Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 4,539 - Reviews: 23 - Favs: 50 - Follows: 90 - Updated: 4/5 - Published: 1/15
Brave New Dimension by This Is A Boring Fanfiction reviews
Well here it is, the re-write to my old story. No differences really. The humans and covenant get caught in a precursor device and get transported to the Mass Effect universe. Pre ME3 Post Halo 4. Just wait I will surprise you again.
Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 9,230 - Reviews: 17 - Favs: 48 - Follows: 80 - Updated: 4/5 - Published: 11/26/2014
Mass Effect: The New Journey by Arashi the Solar Phoenix reviews
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
Rated: T - English - Sci-Fi/Adventure - Chapters: 13 - Words: 124,916 - Reviews: 935 - Favs: 1,336 - Follows: 1,663 - Updated: 4/4 - Published: 1/26/2014
Halo Effect 2 by Sharp47 reviews
Less than a month after the battle of the Citadel Commander Shepard is killed while on a patrol but is revived by Cerberus a Pro human organization who want his help in investigating the disappearance of entire human colonies
Rated: T - English - Sci-Fi - Chapters: 5 - Words: 9,847 - Reviews: 2 - Favs: 7 - Follows: 8 - Updated: 4/4 - Published: 1/15
Red Cobra by Billybobjoe47s reviews
Last time the UNSC discovered a mysterious alien artifact, the Halos came within seconds of activating. Every problem the UNSC has had in the last 50 years has been because of aliens and their blasted artifacts. So when a newly-surveyed system holds a mysterious artifact, there is great cause for worry. Operation RED COBRA is intended to remedy that worry- by any means necessary.
Rated: T - English - Sci-Fi/Adventure - Chapters: 7 - Words: 17,666 - Reviews: 92 - Favs: 299 - Follows: 414 - Updated: 4/4 - Published: 1/6 - Master Chief/John-117, T. Hood
Wrath of the Gods by Aphrael1742 reviews
On the run from the Forerunners, the Covenant enters Citadel Space. It's not as epic as it sounds.
Rated: K - English - Chapters: 1 - Words: 1,044 - Reviews: 6 - Favs: 12 - Follows: 11 - Published: 4/2 - Complete
Last Spectre of Reach by Ginyou Rinsom reviews
Remembered by history they thought his body belonged to Reach. To his purpose he rose again not only to defend humanity but a galaxy full of those who cried for freedom. Together, he bleed with them but he still failed. Can he shed his apprehension and work alongside the one human and her team who can stop the terror from beyond the darkness? This is the next chapter of Six's tale.
Rated: T - English - Adventure/Sci-Fi - Chapters: 4 - Words: 27,698 - Reviews: 53 - Favs: 168 - Follows: 254 - Updated: 3/31 - Published: 10/15/2013 - SPARTAN-B312/Noble Six, Shepard (F)
Dawnhammer by Ace Warbringer reviews
For the crew of the Matriarchs Light, the day was going to hell. For the Dawnhammers refit voyage, new things are about to occur. For when the Matriarchs Light opens a relay, chased by a Reaper. One ship will stand and face a new world. (one shot)
Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 4,890 - Reviews: 17 - Favs: 51 - Follows: 63 - Published: 3/29
One Last Effect by Rookie117 reviews
He's one of the Last of his kind. He has seen the horrors of war first hand. So what would happen where hes thrown into a Galaxy where its a peace. Well lets find out.
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 1,797 - Reviews: 16 - Favs: 18 - Follows: 35 - Published: 3/28 - Shepard (F), Tali'Zorah
Mass Effect: loose Ends by death7559 reviews
"If you commit genocide, you'll need to take care of any, loose ends. Because this, this is what happens when loose ends, stay loose" -An accurate retelling of the end of the world.
Rated: T - English - Chapters: 1 - Words: 299 - Reviews: 2 - Favs: 7 - Follows: 9 - Published: 3/28
The Fall From Grace by The Wandering Warrior reviews
After the destruction of Requiem, the Covenant Empire collapsed and together with the UEG formed the Systems Alliance. After discovering an unknown cache of hitherto unseen before technology and the discovery of what is to become known as 'Mass Relays' the face of the galaxy will be changed forever.
Rated: T - English - Chapters: 12 - Words: 36,973 - Reviews: 88 - Favs: 248 - Follows: 335 - Updated: 3/28 - Published: 11/11/2013 - Admiral Hackett, Shepard (M)
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