BioWare releases the original Mass Effect game, introducing players to the expansive sci-fi universe and Commander Shepard's story.
BioWare announces Mass Effect Legendary Edition, a remastered compilation of the Mass Effect trilogy.
The first encounter and subsequent war between humanity and the turian species.
Humans discover the mass relay that leads to the Citadel, initiating their entrance to galactic civilization.
Commander Shepard is assigned to the SSV Normandy, becoming the central figure in galactic events.
Saren, a turian Spectre, turns traitor by siding with the Reapers and endangering the galaxy.
Shepard uncovers the hidden base of the Collectors, a threat abducting human colonies.
Shepard leads a team through the Omega-4 relay to assault the Collector base and stop their operation.
Massive invasion by the Reaper race begins, threatening all sentient life in the galaxy.
Multiple species unite forces to combat the Reaper invasion including the Krogan forming an elite squad.
Shepard leads the last defense line against the Reapers attempting to destroy Earth.
The ancient device known as the Crucible is activated to deliver a decisive blow to the Reaper threat.
