Don't give up he or you will give in eventually but make sure it isn't you... he just wants what is best for you and his mind set is that gaming isn't all bad in moderation. If you can show him through other acts that you do showing you can manage time he will listen up. Just have a heart to heart conversation about it and maybe you both will walk out of the room with different points of view...trust me I went through the same thing and even if it is a little embarrassing to talk to him it will get better as the conversation goes on...