In the game Gold Digger Jack you are in a mine and you as a miner have to test a new machine. On the screen you will see this mechanism located on the surface of the earth. Under the ground there will be various gems. With the help of a special probe you will have to pull them to the surface. The probe will swing like a pendulum in different directions and you will have to guess the moment when it will look at the object you need and click on the screen with the mouse.