I just banned my kids from playing them recently mainly because I was sick and tired of telling them to get off.<br />Yes my son also had problems sleeping, see the problem is most online games are very intence and require a lot of concencration and this is where the problem lies the brain doesn't want to shut down if played late in the evening. And if there is any violence in the game well I won't say anymore make your own decision. If played a limit of 1 Hr only.