possibly video games lets children experience intellectual stress that could be beneficial for neural patterns in brain

before video games became common 

the only intellectual stress children could feel were during academic tests and during education in school 

this intellectual stress likely created and/or enhanced neural patterns in childrens' brains 

which most likely is necessary for children to succeed in life 

but when most children got access to video games, then children could experience intellectual stress through video games 

and then the question arises if children need to experience intellectual stress during academic tests and education in school 

maybe education could become less stressful and more pedagogical and then children could experience intellectual stress playing video games at home and/or play video games on their mobile phones on breaks at school