Could be a fun mobile time-killer if polished! But please, never EVER mix pixels of different sizes! You can ensure this doesn’t happen by deciding on a resolution for your art in advance and drawing everything as if the window’s size was as small as your art pretends it is. In Godot, you can accomplish this by going to the Window section of the project settings, setting the viewport width and height to the smallest values, at which your game would render pixels at a 1:1 ratio, setting stretch mode to “viewport” and scale mode to “integer”.