Homeworks video games

In my opinion, I think that kid should be able to play video games at the age of 12 or 13. At that time, people is very active, they like excited thing, they like challenge, they like manga and fantasy, super power and super hero. But not all game they could play because some of them are violent and inappropriate there blood and if they play those game, they might do something stupid like killing people because they feel killing people is ok in game so it ok in the real world too. But some game are cool, some game are fun like solve puzzle, dancing, they game can be play at any ages is like Tap tap, angry birds, doodle jump. But they shouldn't play too much, and they will fail in classes, they can't separate from the fantasy world. They might be blind, they wouldn't talk to anyone. So in conclusion, they could they game but not too much, also should play some sport in real life.