Games are not to blame here, and honestly when stuff like this comes up, I'm insulted. Yeah I play violent video games, and yeah I write some creepy stuff, shouldn't I be under close suspection for the next school-shooting then?? According to vgame-bashers, yes, I should. But I'm a peaceful person, I'm a pacifist with virtual violent tendancies; I work out my rage in killing pixels, not people.
But seriously, stuff like this comes from a culmination of issues; family, drugs, psychosis, cults (which, to be honest I found rather amusing in that article) things like that. Maybe a violent game contributed but it wasn't the soul cause. Sure something like GTA might have set him off (though I rather doubt it), but to blame things like this exclusively on games is ridiculous...Pardon my ranting.