I know someone who has been playing war games on the computer for many years for many hours a day. It seems to me over this time he has become more and more aggressive, more likely to see everyone as enemies and himself a victim, also talking about violence all the time, he appears to have aquired an anger addiction.

A lot has gone wrong in his life over this time, that may explain the anger, but there are many who think a lot has gone wrong in his life because most of his energy has been directed into the games.

Someone told me those games were developed to create killers for the military (I don't know if that's true), that may be fine on the battlefield but not in civil society.

I was wondering if this sounds likely or familiar to anyone. Does anyone have any suggestions, any sites on the subject, I can't find much at all.