I liked the music and the idea was a promising one.
I played this for a while and the bottom of my screen was cut off, so I think there may have been something below "Minerals" but I couldn't see it. I just got bored of shooting things before I got to 10k minerals. I wasn't sure what else to do. I knew there was a build mode, but I couldn't figure out how to get into it. The sound on the shooting also cut out a lot and then stopped altogether after a while.
It seems that you put a lot of work into this. I wish I could have appreciated it more. It looks like people with bigger monitors had a better experience. Mine's only 1920 x 1600.