Deep Drill is a clicker game that doesn't require you to constantly press the mouse button or the screen, and it's fun. A powerful massive drill will dig into the ground and then crush rocks; it works without your participation, but very slowly. If you want to speed up the process, then you need to make an effort using the vertical panel on the right. These are various upgrades that can be purchased, thereby making drilling more efficient and faster. Watch the buttons and when they light up bright green, press Deep Drill.
