I lol'd. Your parents are trolling you. Play whatever you want, when you want it. Games will have no effect on your hardware, unless you're straining it too hard (in which case you won't play anyway, because no one can stand very low FPS), and even the only problem that can only arise is overheating IF your cooling is bad.
But before you consider all these, I'd say it's time for a prank on your parents.