The three main resources (Metal, Crystal, Deuterium) can be created via mines or money. There are separate mines for each resource which can be upgraded to produce the resources faster. These resources are used for making buildings, ships, defenses and for researching technology. To run the mines, energy is needed. Energy is produced by creating the following: solar plant, solar satellites (available via shipyard), and fusion reactor (converts a specified amount of deuterium into energy). These buildings can also be upgraded to produce more energy.