so when you sit in front of your computer screen ready to play your favourite game make sure you play it safe. don't sit too close to the screen or you'll have sore eye. if you wear glasses, you must wear them or you can damage your eyesight. Always sit in a comfortable chair or you can end up with backache. Always have a light on. you mustn't play in the dark. you have a social life and schoolwork. Gaming mustn't affect them.