There's Something Inside Me. is a short horror-y piece made in Twine, about feeling your body changing, and struggling with it. Something inside of you has altered the way your body behaves and reacts to you, making you feel as if you have little to no control over it. You don't know where it comes from, how it got inside you, what it's going to do next, how to counteract it... This lack of agency (or help to overcome it) in turn pushes you to do anything to get rid of it.
I'm sympathetic to the struggle, seeing your body change and not recognise it. As if the bones and muscles and flesh are not really yours anymore. Something alien you inhabit and sometimes are able to control - but it doesn't *feel like you*. And it won't feel like you until it's gone. But you can't take it out either. It's with you, probably forever.