Right up my alley as a concept, but it doesn't really work as a game. There is no reason to ever do anything but wall of drills. Fuel tanks are irrelevant because of the coal upgrade not being bound by them. If fuel tanks ever became useful, the next strat is just a mass of fuel tanks behind the wall of drills. There is never any reason to use structural blocks, or pistons, or more than one magnet. Not sure what sticky wheels do.
I will try this again if it gets updates.