I trust that enough time has passed for it to be of interest again. The comments may be partly dated, but still interesting. In this game there are 15 planetary systems and 7 national governments. Each political type, when in power, will allow the industry to build only one of the three types of combat ships. Only the Moderates will increase the economic standing of a region.
Money is used to build ships, increase economic standing and subvert other planets.
It comes from taxing the people. Extra money may be borrowed from the bank via the national government. Each industrial region must border an A region of the same level or higher. The above system is the ONLY serious Poli-Eco game system I know of. In Godsfire you have to manage revolts in your system that sometimes were NOT caused by your opponents.