Yes, such type of games effects not only on their behaviour but also these games change their thoughts too. They become arrogant i their nature and attitude.
Avoid that type of games frm kids that's it, show them the better games like. Army games, that type of games make them learn that, hw cn they command in army if they also join army one day, all signs they learn, all habits they learn. Races, boxing, relly, these types of makes their carrer too, like example, i love nascar races in games and i want to be a part of that type of life in real, but that's my destiny m not in that world bcz no one support's me for