One of my sons wouldn't outright cry, but he'd have fits of rage with that stank face and his fo head all knotted up like "DAD, THIS GAME IS CHEATING ME!!!"
Me and his brothers...
Another son, when he was buying his own consoles and games would get pissed if he couldn't defeat some game, or within a particular time limit that he imposed on himself, get pissed off and go sell that muhfucka to Game Stop. Two months later, he's bought another system. Wash, rinse, and repeat.
She gotta restrict the Game play to weekends only too. Permanently. If he can't make the Grades, institute further restrictions.
When my kids were comin' up, I'd cut the power cord and leave the console sittin' there coaxing the fuck outta them. Once shit improved, then I'd splice it back together. Same with the televisions too.