By A Mystery Man Writer
The Reapers are the main villains throughout the entire Mass Effect trilogy, but their history begins long before the events of the first game.
Timeline, Mass Effect Wiki
All That Matters is the Ending: Mass Effect 3 – The Writer's Block
AHL: Timeline (Post-Reaper War), Mass Effect Fan Fiction Wiki
In Mass Effect, why do the reapers do what they do (i.e harvest human beings)? What is their primary motivation? - Quora
Exploring the Mass Effect timeline Pre-Shepard – Green Man Gaming Blog
Mass Effect timeline, explained - Dot Esports
Mass Effect Timeline: All Major Events in the ME Trilogy, Explained
How to Romance Ashley Williams in Mass Effect
Sovereign, Mass Effect Wiki
Mass Effect Reapers Explained: Full Timeline From Origin To Invasion
Mass Effect 3 War Assets guide: every asset that adds to your Military Strength
Something that slightly depressed me in ME3 : r/masseffect
Mass Effect 1,2,3 & Andromeda Timeline with relevant events that I think can connect the games : r/masseffect
Did the reapers from the mass effect have good intentions? - Quora
A lot of theories about Mass Effect 4/5, so story and theory wise, what are you expecting/hoping for the new Mass Effect game? : r/bioware