Expand industries by upgrading facilities, balancing production and consumption for profit.
You need to upgrade the level of each of your facilities wisely to get a balance between their generation and consumption. Keep them digging, processing, and selling so you can get a steady stream of money.Expand your different industries, process and export for more money!
I have the vault upgraded fully to level 10, which holds $100m. The tier 4 oil refinery - transport rush 38/40 upgrade cost $120m, so I am unable to accumulate the total cash required to upgrade, preventing me from advancing to tier 5.