Yeah, we wanted part of the challenge and design to be that the player keeps track in their own head, while the visual change of the item's image gives a rough estimate of how much the item is filled, both to keep in line with the theme and to give the game a bit of a challenge while the chaos reigns in the background haha! We agree about the mouse controls escaping the viewport, it annoys us too. The fullscreen button (the one with the four arrows, since the other one doesn't preserve aspect ration as well) helps with that though! Thank you for playing and for your feedback!