Machinery Mining(V. 1.6)

Dig all the way to the center of the Earth. Start with one drill rig on a flat plot. Drive it into the ground, aim the drill down and dig your own tunnels. Put down auto miners that dig their own holes, and send cave miners into the caves to mine rare ore for you. Sell your ore, or send it up the conveyor to your refineries and silos to make more. Buy bigger machines, fit better drill heads, engines, cooling and tracks, and go deeper. Every layer is harder and hotter than the last, from the topsoil down through the mantle to the inner core. Twelve caves at set depths hold rare ores like quartz, gold, diamond and core crystal. Mine their veins with your pickaxe or let your cave miners do it. Craft better parts and tools from rare ore, rebirth for bigger buffs, and let your friends help in your mine. Play on PC, phone, tablet or controller.