Computer games have become an integral part of our lives, becoming one of the most popular leisure activities among youth. Virtual worlds open us tremendous opportunities, we can go as race drivers, commanders and many others. This year, game developers release hundreds of new games. Almost immediately after the computer games appeared there were conversations about their dangers for children and adults. From that time on the subject were written thousands of articles and conducted hundreds of studies, but no definite answer until now. What is the danger of computer games and can be a good are they?