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by Solaris242 reviews
Humanity never developed FTL. The Prothean archives contained no technology, no Element Zero, just a warning. Isolated from the rest of the galaxy for two thousand years, restricted to their only system, how will humanity have changed when they first meet the Turians? AU, alternate history of humanity and First Contact.
Mass Effect - Rated: T - English - Sci-Fi - Chapters: 27 - Words: 79,685 - Reviews: 2907 - Favs: 7,968 - Follows: 8,506 - Updated: 2/16 - Published: 5/7/2013 - Complete
The Last Spartan
by DinoJake reviews
An AU fic in which the Halo and ME universes share the same galaxy. After a well deserved rest in Cryo-Sleep, Master Chief finally awakens...to a whole new galaxy.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 55 - Words: 489,686 - Reviews: 3993 - Favs: 4,185 - Follows: 4,176 - Updated: 12/31/2018 - Published: 5/2/2010 - Master Chief/John-117
Mass Effect 3: Into the Unknown
by Fainmaca reviews
With the defences around Arcturus breached and the homeworlds of the strongest races under siege, what hope remains? One man faces the oncoming storm. The Reapers will know defeat. They will know fear. They will know Commander Shepard.
Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 57 - Words: 1,010,268 - Reviews: 329 - Favs: 230 - Follows: 212 - Updated: 1/4/2016 - Published: 12/29/2010 - Shepard, Jack
When There Was a Tomorrow
by General Rage reviews
Do you remember when there was a tommorow? Commander Wade Shepard does, but with a Reaper threat looming he's not sure there is one anymore. And he's about to discover that his universe may not be the only one where mankind faces extinction. M for B&V
Crossover - Halo & Mass Effect - Rated: M - English - Sci-Fi/Adventure - Chapters: 25 - Words: 630,925 - Reviews: 619 - Favs: 963 - Follows: 689 - Updated: 7/31/2012 - Published: 4/13/2011 - SPARTAN-B312/Noble Six, Shepard - Complete
Mass Effect New Origins V2
by erttheking reviews
On the dawn of the 27th century, the UNSC discovers a Mass Relay, and unlock its power. What follows not only includes making contact with new species and making new friends, but making new enemies as well, and the entire galaxy will shake.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Romance - Chapters: 109 - Words: 442,687 - Reviews: 2552 - Favs: 1,737 - Follows: 1,229 - Updated: 6/9/2012 - Published: 10/5/2010 - J. Garson - Complete
by hahatimeforponies reviews
Twilight has a speed test for Rainbow Dash, and she jumps at the call, but afterwards, something seems slightly off... Warnings: Weird plot, minor grimdark and shipping elements, heavy Cupcakes references.
My Little Pony - Rated: M - English - Sci-Fi/Suspense - Chapters: 12 - Words: 13,993 - Reviews: 23 - Favs: 69 - Follows: 12 - Published: 8/13/2011 - Rainbow Dash - Complete
by ElectricZ reviews
ME2- Legion has been destroyed in battle, much to Tali's relief. When tasked with recovering the geth's memory, her feelings may prevent her from fulfilling her duties until she learns why it's so important. Most characters present. Ends with chapter 8, with alternate replacement ending in chaps 9-10. (Original, pre-FTWD version. If coming from Dancer in the Dark, see the remaster)
Mass Effect - Rated: T - English - Drama/Tragedy - Chapters: 10 - Words: 28,445 - Reviews: 126 - Favs: 430 - Follows: 132 - Updated: 7/6/2010 - Published: 5/9/2010 - Tali'Zorah, Legion, Shepard - Complete
by Hawki reviews
Oneshot: There was no way the sangheili could match the manpower of the Imperium, nor the strength of its demon Space Marines. Still, at least they could build plasma weapons that didn't kill their users.
Crossover - Warhammer & Halo - Rated: T - English - Drama/Humor - Chapters: 1 - Words: 739 - Reviews: 28 - Favs: 70 - Follows: 24 - Published: 2/27/2010 - Space Marines, OC - Complete
The Finale of the Ultimate Meta Mega Crossover
by EliezerYudkowsky reviews
Vernor Vinge x Greg Egan crackfic. This was supposed to be a bit of utterly deranged fun, but got out of control and ended up as a deep philosophical exploration.
X-overs - Rated: M - English - Sci-Fi/Humor - Chapters: 3 - Words: 13,500 - Reviews: 43 - Favs: 93 - Follows: 45 - Published: 9/20/2009 - Complete