When you become an extragalactic entity, meeting other galactic civilizations becomes an inevitable occurrence, and First Contact rarely goes well for the less-advanced society. Pre-ME through ME3. Rated T for language and implied sexual situations later on. Extremely Light parody on Halo OPness AKA Halo tech taken to its logical conclusion.
Crossover - Halo & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 34,074 - Reviews: 751 - Favs: 1,063 - Follows: 1,337 - Updated: 4/11/2014 - Published: 2/11/2013 - Shepard (F), Admiral Hackett, Tali'Zorah, EDI