What a great game! I think I saw this idea already somewhere (cannot remember where) and it is not directly related to mirror, it feels more like "time traveling". Anyway brilliant job! Maybe just one little minor detail to improve: I would have prefered to be able to do "Quit" / "Continue" also on the keyboard. You quite often face this message when you try around and it is a bit cumbersome to change to the mouse again for that. However, just a tiny little detail.