A free app for Android, by Skyreach Games: Crafting Building Mining.

You have been hired as a miner in the remote underground mines. You will be working in a deep underground mine, where you will have to mine and extract valuable resources. The main task of the miner is to extract as much coal, gold, silver, and other valuable minerals from the rocks. To achieve this, you will need to use various tools and machinery. You can use a pickaxe to break the blocks and get to the minerals, a shovel to remove the rocks, a crusher to crush the large rocks, and so on.

The game is played in a 3D world, where you can explore and interact with other players. You can also complete tasks and challenges, and you can even make friends. The game is set in the distant future, so you will have to mine and extract resources from the rocks in order to survive and thrive.