If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Idle Mining Co.
This is a strange but addictive game! Strange as in all you have to do is keep clicking the outside of the mine and purchasing upgrades as your gold rises. You buy gold miners and see them off into the tunnel but don't actually get to see the digging, the gold all relies on you and how fast you can keep clicking. Oddly addictive, enjoy!