Pax Imperia: Eminent Domain is a real-time strategy computer game. The game emphasizes empire building and customization. Instead of using a single large map as do most of the current real-time strategy games, Pax Imperia revolves around star systems connected by wormholes or jump points, which connect a system of star systems in a large web. The game allowed for the player to customise the species that they were to play to a high degree. Players could focus on construction, reproduction, research, espionage, or the acquisition of money. Players could select special qualities, such as having psychic powers or an aquatic physiology, and could tailor their species to be better at peaceful colonisation or conquest.