Is It Best To Blow Things Up Before Bedtime?

My son is making major explosions here before bed -- his video game flaring and exploding in full technocolor. Okay, I'm a mom and I worry about these things -- but why wouldn't your head be crammed full of this stuff and your dreams very much infected with it, when you finally hit the hay if you'd been doing it a half hour before? Time for a little seguing away from the video games and into Dr. Seuss I think.