1. Game's great
2. Fullscreen doesn't work properly - you fullscreen the <html> and that makes canvas still be 1920x1080, have paddings, etc. Also I don't see how to fullscreen exe, F4/F11/Alt+Enter dont work
3. Please make selling coins be instant and have 100% return.
4. Please make ability to "sell" buildings - make them return to Machines tab if you drop them into tabs. Then they'll be free when you try to build them again. Map is infinite so it'll only fix UX of moving and having to search if you have some splitters on the map
5. Please make tabs open oh mouseover rather then click, that'll be better UX