New evidence suggests heinous behavior played out in a virtual environment can lead to players' increased sensitivity toward the moral codes they violated. The current study found such guilt can lead players to be more sensitive to the moral issues they violated during game play. Other studies have established that in real life scenarios, guilt evoked by immoral behavior in the "real-world" elicits pro-social behaviors in most people.

Source: 'Bad' video game behavior increases...ead to pro-social behavior in real world