How Interstellar Empires Works
Learn how Interstellar Empires works: build a planet, explore a persistent galaxy, use Portal travel, command fleets, and form alliances in your browser.
Interstellar Empires is a persistent browser-based space strategy game. Build a home planet, develop technologies, command ground armies and fleets, then compete and cooperate with other players in a shared galaxy.
Build a stronger home planet
Your Command Center sets the pace of progression. Resource buildings, military facilities, research, and defenses give you more options as your empire grows. Start with the beginner guide.
Travel by galaxy map or Portal
Fleet travel lets you interact with the galaxy map, while the Portal Network sends ground units through discovered addresses. The two systems create different opportunities for exploration, combat, and cooperation.
Choose your next objective
Run Portal missions, scout targets, mine rare resources, fight pirates, trade, or coordinate with an alliance. Queues and marches continue while you are away, so progress fits around your schedule.
