There are plenty of secrets below the crust, so dig down deep and find all of the precious metals and glimmering gems! There's a lot of untapped money down there, and luckily, you've got the spiraling tunneler to dive into the earth and start extracting some valuable cash and profit! Upgrade your digger for some bigger fuel tanks and more efficient drill to tunnel further down. You know the best secrets are hidden far beneath the earth!

Instructions:

Use the Arrow Keys to move and dig. Press SPACEBAR at the appropriate buildings to save, upgrade, and refuel.