Kotaku's Joshua Wise wrote:

Video games have only recently begun to consider the nature of moral choice as an integral piece of a game's mechanics. Developers have started to craft experiences that will allow the player's moral and ethical choices to affect the context of their gaming experience.

Kotaku's Joshua Wise wrote:

There are few developers, however, that have made the transition from merely allowing the player to affect the physical world to enabling him or her to influence the people and events in that world with more than a gun, sword, or spell-book. Of these, Bioware's Mass Effect games are perhaps the purest example of how these kind of systems have been implemented thoughtfully and effectively.

Kotaku's Joshua Wise wrote:

One objection to this particular way of doing things might be that when people are going bad, they just don't realize it Medieval theologians viewed evil not merely as a form of guilt, but a privation, something that removed life and knowledge from people. The popular apologist C.S. Lewis expressed this by saying that Goodness knows both Good and Bad, but Evil doesn't know either. This might lead to an alternate implementation of the choice system. If one constantly chooses the bad choice, the interface might change to reflect the assumptions of the character in the world. If the good choice is always in the upper right and in blue, and the bad is always in the upper left and red, perhaps the more one chooses bad, the red begins to look a little more purple, and then finally changes to blue. The good choice will shift to the same purple, so that at some point, only their positioning differentiates them. It too would continue its color change until a shift back to good, or a full delving into wickedness once utterly and finally changes their colors to their opposites. When both become purple, might it not also possible that their position on the screen may shift randomly, so that the good choice is not always on the right, and the bad not always on the left.

Kotaku's Joshua Wise wrote:

Expressing the knowledge and perception of goodness would be a bit harder to implement, but if one were to attempt to duplicate what the philosophers and theologians tell us, perhaps some further explanation of the result of each choice is made available to a player playing the straight and narrow. It might also be possible to reward bad choices more quickly (as has been done in the Bioshock games) which would be a trade off for the information provided to characters who choose the upright path.