
on the other hand, they have many and many bad effects on children and on adults too. the worst effect is "social isolation". children prefer to stay alone most of their time. also, these games contain violence, kiiling, weapons and aggression. in some games, the person must be more violent to win the game. finally, they can affect the child's academic level negatively, because he spend many hours in playing. so it's a kind of addiction.
there are many people should take the responsibility of reducing these bad effects. first, companies (who sell these games). they should educate parents and socity in general about what these games can do. also, governments (who legalized these games). they should put some rules on companies that produce and sell these games. finally, individuals also need to control themselves. either when buying the game, they can choose specific kind of games, or in controling the playing hours.