X-Com and Mass Effect Crossovers
The XCOM Effect by Havocfrost reviews
2183: Humanity has survived second contact, but now Eden Prime burns and the ancient boogeymen of Earth's past are set to destroy the fragile place Humanity has earned. Beset on all sides by indifferent allies and hostile alien races, only one man can bring the galaxy back from the brink and unite the disparate species against the real foe threatening them all.
Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 23,152 - Reviews: 23 - Favs: 60 - Follows: 81 - Updated: 4/8 - Published: 3/26 - Saren A., Shepard (M)
The Magpies by Knight in Blackest Armor reviews
With the technologies of several alien races at its disposal, humanity had undergone a technological revolution. It advanced at such a rapid pace, far exceeding many expectations. Soon however, the humans learned that they shared their galaxy with yet another group of sentient alien life, but to mankind's horror and confusion, these aliens were not the sort they expected at all.
Rated: T - English - Sci-Fi - Chapters: 2 - Words: 23,288 - Reviews: 46 - Favs: 149 - Follows: 237 - Updated: 3/25 - Published: 3/20 - Shepard (M)
Extradimensional Assistance by President John Henry Eden reviews
Commander Shepard found himself in command of six alien hunters from a neighboring parallel universe. Now, he has the new responsibility of trying to keep the XCOM operatives in his squad from tearing the Normandy crew apart with either rampant xenophobia, or just by plain old poor communication skills. Starts from ME2's Freedom's Progress. Ends in Collector Base? Not necessarily.
Rated: T - English - Sci-Fi/Friendship - Chapters: 4 - Words: 47,038 - Reviews: 27 - Favs: 63 - Follows: 78 - Updated: 3/11 - Published: 2/23 - Garrus V., Tali'Zorah, Shepard (M)
XCOM Mass Effect Crossover challenge by superezra reviews
i'm sary the original challenge got taken down because of some personal info if you read this is me then you now wot i'm talking about anyway package sacrifices him self to save the temple ship and to give the aliens back their freedom new earth government xcom renamed aliens (organic and sinthatic) gain equal wrights advans throw the threw the stars warp drives super careers bla
Rated: T - English - Adventure/Sci-Fi - Chapters: 3 - Words: 830 - Reviews: 11 - Favs: 2 - Follows: 2 - Updated: 1/25 - Published: 10/10/2013
I Am Watchful I Am Necessary by TheConstellation reviews
Decades have past since the Ethereals threat was defeated and humanity has emerged united and stronger than ever for the conflict it faced. Now after discovering the Prothean Archives on Mars, humanity is about to end up on a much larger stage than it ever expected to play on when yet another alien threat comes knocking. And again, X-COM stands ready to fight. Vigilo Confido.
Rated: T - English - Sci-Fi - Chapters: 6 - Words: 12,693 - Reviews: 221 - Favs: 411 - Follows: 575 - Updated: 12/20/2013 - Published: 9/30/2013 - Admiral Hackett
X-Com, a new threat by Deathtroll reviews
set in the X-Com universe, at 2100 hours GMT, a scientific expedition went dark, at 0100 Hours our colony on Shanxi went dark, sending an hostile aliens SOS, this is what happened after, please note I have not played ME1.
Rated: T - English - Sci-Fi - Chapters: 2 - Words: 1,329 - Reviews: 2 - Favs: 24 - Follows: 28 - Published: 11/22/2013 - Shepard (F)
XCOM: Second Contact by Agayek reviews
With the destruction of the Temple Ship humanity knew peace. XCOM never forgot their motto however, 'always vigilant, always reliable'
Rated: T - English - Sci-Fi/Adventure - Chapters: 26 - Words: 294,105 - Reviews: 924 - Favs: 1,440 - Follows: 1,523 - Updated: 9/15/2013 - Published: 1/1/2013
Across Time and Space, There's Always Earth by Wanderer D reviews
A new energy signal discovered in the middle of the Reaper invasion might be just what Shepard needs... or perhaps it might doom them all. Despite ending up in unexpected places, Shepard knows what she aims to protect, because, even across Time and Space... there's always Earth.
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 4,039 - Reviews: 15 - Favs: 42 - Follows: 75 - Published: 6/13/2013 - Shepard (F), Garrus V., Liara T'Soni, U. Wrex
The Volunteer by Primordial Soul reviews
A hero's duty never ends. A hero's journey never ceases. A hero never dies. If energy cannot be destroyed, then heroes never fall. They only move on. The Volunteer follows this creed. And in this new universe, the Volunteer will do what she does best. For she is XCOM. Always vigilant. Always reliable. Post ME1. Volunteer/Liara. ON-HOLD
Rated: T - English - Chapters: 1 - Words: 3,947 - Reviews: 21 - Favs: 49 - Follows: 80 - Published: 3/30/2013 - Liara T'Soni, Nyreen K.
The war that never ends by Masterblader158 reviews
Mankind survived against all odds and now they must do it again but this time much much harder and bigger. (Will fit in Marauder Shields at an appropriate time in the story) need reviews to help me improve and for suggestions.
Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 1,615 - Reviews: 2 - Favs: 17 - Follows: 23 - Updated: 2/1/2013 - Published: 1/25/2013 - Marauder Shields
Xcom: Enemy Unknown: Shepard meets the Catalyst by Hoplite39 reviews
After defeating the alien leader in the temple ship, Xcom operative Colonel 'Spectre' Shepard meets a foe she had never met before called the Catalyst...Includes spoiler references for both ME3 and Xcom EU.
Rated: T - English - Humor/Parody - Chapters: 1 - Words: 812 - Reviews: 5 - Favs: 2 - Published: 1/26/2013 - Shepard (F), Catalyst - Complete
The New One's Destiny (Going through revision) by SniperInTheHouse reviews
Sacrificing his life to save earth he is sent to a new universe. Full of Xenos hate boils in his blood. Will Merc continue his Xenophobic and rip the Normandy crew apart or become a savior to humanity. Discontinued due to a better story done so now theres finally a small group of cross overs with xcom
Rated: T - English - Adventure/Mystery - Chapters: 8 - Words: 10,390 - Reviews: 14 - Favs: 9 - Follows: 13 - Updated: 12/10/2012 - Published: 11/7/2012 - Shepard (M)