This is a cool game! It's a cool idea that I think with some updates could be awesome! Adding a pause screen would be cool, and adding a feature where if you put your mouse over the object it'll highlight what it was (kept getting sand and ceramioc mixed up...)
Also! I noticed you made this with unity, meaning you could build this game using Unity WebGL which you can upload straight to unity and allow people to play it through browser which would remove the downloading / unzipping step and make more people play your game! :)