The process by which resource are extracted from systems. Mining is performed by allocating colony spending for a given colony on mining. The amount of resources generated by mining is dependent on the mining efficiency for that system. A type of ship used for defense. For each system, the amount of production tha must be spent every turn to maintain a colony there.
Overhead spending is mandatory and automatic.
Those things about a gamer that are persistent from game to game. The game system keeps track of a player's vital information, including his or her preferences and score. The amount of workers living at a given colony, measured in population units. Population naturally grows with time according to the population growth rate, until it reaches the agriculture, which is the maximum sustainable population at that system. The measure of the population.