Actually, video games do have influence on the emotional part of your brain, whereas changes in your mind are noticeable through a MRI scan, after playing for just one week. Most people who play 'shoot em' up games' are prone to suicidal thoughts, thoughts of homicide, and nothing positive, really. I play Call of Duty time to time... Yea it had a effect on me when I used to play maybe 5-6 hours a day.