In OGame there are three different Resources: Metal, Crystal, and Deuterium. These resources are used for buildings, ships, research, and defensive installations. Metal and crystal are both mined, while deuterium is synthesized Energy is used to power mines and the synthesizer, if power goes below 0 (there is too much at work while not enough power is made), then production is pulled back to keep all facilities working. Power can be created from the Solar plant, Fusion reactor, or solar satellites. Unlike the basic resources, power is constant, so it does not gather hourly, but stays still.