You are a gem trader!
Manage your miners, mine gems, and buy and sell the gems you get in your store!
Offer to special gems, negotiate the price and sell them at the highest price possible.
It’s a fun game. But you quickly loose the need for the money. I would recommend adding more options like either expanding or going to another area. Also it would be good to add more challenges like requests from the customers. Just some thoughts that you could add.