This article from Gamasutra is a great read and gives an overview of the Ethics of Game design. Talking about what many games have done in the past and how people have reacted to them. As well as how these reactions have influenced future game developers when creating new game ideas. The one line that stood out to me was a quote from a Lt Col who said – “There is a fine line and you don’t want to step over it,”
Takahashi, Dean. “Gamasutra – Ethics Of Game Design”. Gamasutra.com. Web. 4 Jan. 2016.