Today, 65% of American adults and nearly all teenagers play video games. In 2018, the industry made more than $136 billion. Games look more real than ever, showing incredibly detailed violence. What do we actually know about how violent games affect us? Psychologists have been studying this for decades, but some are convinced that those who link violent games to aggression are completely wrong. Watch the video to find out why researchers disagree so strongly, and how we got here.