Great work! The game feels very polished. The sounds, the UI, and the graphics are simple but work well together. The only thing that needs some work is balancing. The gold is essentially infinite if you have the time to hit the ores (though very tediously), and the attack speed also has no cap (more clicks = more damage, which doesn't seem to fit with the vibe you're going for). Different mechanics would make the player actually think, rather than spam clicks. Good game though!