Life or death decisions. Forsaking the fate of the Galaxy for greed and power. Shooting cherished allies in the face. Mass Effect was a pretty dark game. It's got nothing on its sequel, though, which combines the same tough RPG decision-making moments with grittier, more morally ambiguous action. It's also a game where death matters like never before. And this time, if you die as protagonist, Commander Shepard, you might not be getting back up for Mass Effect 3.