Use the mouse, Instructions to do other things are inside. The pickaxe symbol is the mine, Move your mouse to the pickaxe to take a look of the Mine. "Dig Deeper" means add more to the mine. "Place In Inventory" means place an item in the Mine to your Inventory "Mine" means mine the items the Mine then selling it simultaneously. "Eat" means eat a Sandwich, Sandwiches if eaten will add to your Stamina If your stamina runs out the game is over.
I made this I took inspiration from a game called "Gem Hunter 2" Please report any glitches at the comments below.