Single-player games like Space Empires I
Below are 11 single-player Steam games similar to Space Empires I, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Space Empires I page.
Ranked picks
- 1
Space Empires II
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Explore the galaxy, discover and colonize new planets to acquire enough resources. Design your ships, choosing from different hulls, weapons, shields, and several devices. Once you advance with technologies, new systems will be available, and you will have to update your designs.
- 2
Space Empires III
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
The third game within the Space Empires series brings the dawn of a new age of exploration. Your race keeps running through the fabric of space and moves to other solar systems beyond your own.
- 3
Horizon
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.
- 4
Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.
- 5
Age of Wonders: Planetfall
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Age of Wonders: Planetfall is the new strategy game from Triumph Studios, creators of the critically acclaimed Age of Wonders series, bringing all the exciting tactical turn-based combat and in-depth empire building of its predecessors to space in an all-new, sci-fi setting.
- 6
Xenonauts
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Xenonauts is a strategy game in which you control a multi-national military organisation defending a Cold War-era Earth from alien invasion, using small squads of persistent soldiers to eliminate the extraterrestrials and recover their technology in turn-based ground combat.
- 7
Galactic Civilizations® II: Ultimate Edition
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Get the complete GalCiv II saga including Galactic Civilizations II: Dread Lords, the expansion pack Dark Avatar, and the newest expansion pack Twilight of the Arnor!
- 8
The Last Federation
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
From the creators of AI War: Fleet Command comes an all-new grand strategy title with turn-based tactical combat, set in a deep simulation of an entire solar system and its billions of inhabitants. You are the last of a murdered race, determined to unify or destroy the 8 others.
- 9
Space Empires V
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
Space Empires V is the latest edition in the Space Empires series. This new chapter completely updates the UI and takes the player into a real-time rendered 3D universe. Watch space battles played out in glorious detail and realistic effects. Expand, Explore, Exploit, and Exterminate in a huge living breathing galaxy.
- 10
Space Empires IV Deluxe
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
The award-winning Space Empires IV Deluxe is the latest edition in the Space Empires series. A grand strategy title in the space 4X (explore, expand, exploit, and exterminate) genre, Space Empires has already found a place in the heart of strategy gamers everywhere.
- 11
Space Empires: Starfury
Single-player alternative to Space Empires I — playable solo, no multiplayer required. Shares Strategy with Space Empires I.
In Space Empires: Starfury you are on a wild intergalactic ride through the Space Empires universe. You are an undercover agent for the TCN (Terran Confederation Navy) trying to determine the cause of a recent escalation of pirate attacks in the Neutral territories.