LOL, this is like Lego (tm) for the Clinically Insane. Seriously, it reminds me a lot of "MotherLoad", a 2D Flash game about mining minerals and making tunnels on the surface of mars. Have you played it? For a few years I did 2D graphics for a programmer making a clone / sequel to MotherLoad, called "Motherload Ultimate" or just "MLU". The programmer was a total SNERT, though, so the relationship ended, and ended badly, after 3 or 4 versions of the sequel had been produced.
I wish someone else would take a crack at doing a mining game, so I could recycle those graphics. It was a LOT of fun.