These online games are not allowed over our house its simple the kids spend to much time on the net and do nothing else and you're right Phil you have to jack hammer them of the computer to get them off and depending what games they play it can effect them as they know they are playing other kids on the net and not the computer itself and these games stick into their brains and you wonder why some have nightmares. As for interupting their sleep yes that is 100% correct, to much brain activity going on to let them sleep or have a good sleep.