Popo's Mine - Idle Tycoon Game for Android
A basic mine is at a player's disposal. There is also a shop on the playing field. It is aimed at selling resources and getting money for them. There is also nothing to do in the game except for the mine development by means of levelling up upgrades and developing new layers.
The player will deal with hiring people. You can arrange work in such a way that you can avoid interfering and earn money even when the game is closed. Besides workers you can hire managers. The game campaign is a map with several mines. No Internet connection is required.