Video games generally aren’t great at representing morality as complexly as other media, but there’s surprising depth to the medium itself.
Extra Credits’ take on moral choice and agency in video games - http://www.youtube.com/watch?v=6_KU3lUx3u0
GoldVision’s GTA Pacifist - https://www.youtube.com/watch?v=dPn0x_e0zoQ
“Being Bad in a Video Game Can Make Us Morally Sensitive,” by Matthew Grizzard et. al. - http://online.liebertpub.com/doi/abs/10.1089/cyber.2013.0658
A Joystiq article about the failings of moral choice in video games - http://www.joystiq.com/2012/02/10/dark-side-cause-it-looks-cool-the-failings-of-moral-choice-in/