Battle for the fate of the galaxy! Mass Effect finds the galaxy threatened by a cycle of destruction that repeates every 50 millennia. The harbingers of this apocalypse, the Reapers, are an ancient race of artificial intelligence bent on havesting organic life across the cosmos. But one species, new to galactic affairs, stands in their way - humanity. Led by Commander Shepard, a rag-tag army of the best and brightest soldiers in the galaxy is marshaled against the Reapers to ensure the light of civilization never goes dark. Choose one of three factions, each with its own victory conditions, to battle for the fate of the universe.