Homicidal/genocidal feelings what to do?

The reason you act like this is because of your parents, not video games. A parent should know well that if you treat your kids like crap, then they'll throw it back at you. All I'm saying is that they treated you badly as a kid so now they've messed you up by making you angry and anti-social. Don't bother talking to your parents because the sound like they wouldn't listen but it's worth a shot. Don't run away from home either because it'll make things worse. I suggest you continue to take walks around the city and stay out of the house as much as possible. Good Luck