As the wait for Mass Effect 4 continues, it is worth considering what makes the sci-fi RPG franchise stand out. One of the most important components of the first three games was the morality scale, a measurement of a player’s good or bad reputation dependent on their previous choices. This scale determined what kind of person the game’s protagonist, Commander Shepard, would be in the story and what options they would have available to them.
https://screenrant.com/mass-effect-4-choices-decisions-morality-scale/