Find ores, treasures, gems, collector's bones and others.
Sell them in the shop and buy upgrades and tools to dig deeper.
Complete the prehistoric skeletons to get rewards.
Reveal the secret of the mine.
The huge mine is generated randomly which means that every new game is different.
Be carefull because the mine is very dangerous. You can get stuck, fall down chasms, get crushed by rockfalls and so on.