Hey!
This is quite polished! I like how it looks and overall how it plays, even though the gameplay is simple. The way you implemented the theme is smart, and I can't say I have any negative things to say about this. It's an overall good experience.
Though the sound effects for the resources are maybe broken? My right earbud makes a weird sound whenever I collect stuff. I tested it in some other music and games to see if the headphones were broken but no, it only happens when I collect stuff. A minor problem, mind you. But thought that I should let you know.
Well done! Cheers!