The refinery NFT's
Oil and gas resources are used to fuel other NFT’s and your armies.
Some of energy production NFT’s for example use resources generated by refinery NFT’s. And because energy is needed to gather EBI’s, have enough fuel it’s very important too.
In addition all motorized armies will require fuel to function, otherwise they will be inactive. Be sure you have enough spare fuel, because some events might appear on your map where you will want to go, and if your armies won’t have fuel, you won’t be able (unless exists and on market and you can buy it).
You will need the resources gathered from refinery to produce various things too, depending on what blueprints you have. In our second update we will increase the variety of resources gathered and giving them more purpose.