With a powerful drill, extract coal, iron, gold, and diamonds to uncover hidden wealth. For the best resource extraction, upgrade your drill and swap out accessories like wooden shovels, stone shovels, iron pickaxes, and diamond pickaxes. Upgrades to Drills Develop your drilling skills to the point where they are unstoppable. Resource Extraction: For riches and extravagance, mine coal, iron, gold, and diamonds.