Dig into the coal mine and aim for the goal while unearthing gems!

When the game starts, you can start digging walls by yourself.
Walls can be dug when the controlling character touches them.
As you move through the coal mine, you will occasionally receive a small amount of gems.

The amount of jewels you can hold is expressed by a gauge, and when it reaches 100% you can no longer hold it.
There is a cash exchange near the entrance to the mine where you can exchange gems and coins.

By using coins, you can add the number of jewels you have, movement speed, and personnel.
As you dig deeper, new areas will appear, so aim for the goal.

This is a simple action game where you can enjoy the exhilarating feeling of digging into walls.