For some time my son sneaks up in the night after we have gone to bed to play his nintendo, go on the computer, play lego or even read books. I have tried everything, emptying his room, taking out light bulbs, withdrawing the use of computers etc. and things improve for a while then revert back. I believe he is genuinely remorseful when I talk to him the next day but does not seem to be able to control himself. The main problem is his grumpiness and tiredness during the day. All suggestions welcome.