Single-player games like Galactic Civilizations III
Below are 20 single-player Steam games similar to Galactic Civilizations III, 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 Galactic Civilizations III page.
Ranked picks
- 1
Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
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.
- 2
Galactic Civilizations® II: Ultimate Edition
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
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!
- 3
Galactic Civilizations IV
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Take command of a civilization that has just achieved faster-than-light travel in Galactic Civilizations IV, the newest entry in the award-winning space 4X strategy game series. Explore the galaxy, colonize worlds, shape cultures, make alliances, fight wars and pioneer new technologies.
- 4
Sins of a Solar Empire®: Rebellion
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
- 5
ENDLESS™ Space - Definitive Edition
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
ENDLESS™ Space is a turn-based 4X strategy game, covering the space colonization age in the ENDLESS™ Universe, where you can control every aspect of your civilization as you strive for galactic domination.
- 6
Stellaris
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Explore a galaxy full of wonders in this sci-fi grand strategy game from Paradox Development Studios. Interact with diverse alien races, discover strange new worlds with unexpected events and expand the reach of your empire. Each new adventure holds almost limitless possibilities.
- 7
Age of Wonders: Planetfall
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
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.
- 8
Master of Orion
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
The ascendant spacefaring 4X strategy game returns! A new chapter in the epic Master of Orion saga is poised to once again capture the imaginations of millions of gamers.
- 9
Master of Orion 2
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Forge an empire in a universe where population growth is stripping away planetary resources. Colonize unknown planets and trade with other races for their knowledge.
- 10
Stars in Shadow
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Stars in Shadow is a turn-based 4X strategy game and a vivid tribute to the genre classics. Compete with alien factions to explore and colonize nearby starsystems, build fleets to defend against rivals, negotiate or conquer them. Win by unifying the galaxy, through diplomacy or force.
- 11
ENDLESS™ Space 2
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
ENDLESS™ Space 2 is a Strategic Space Opera, featuring the compelling “just one more turn” gameplay, set in the mysterious ENDLESS™ Universe. As the leader of your civilization, will you impose your vision and build the greatest stellar empire?
- 12
Galactic Empire
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Galactic Empire is a 2D turn-based strategy game where you, as the Commander, decide the fate of the entire universe. Expand your planet, explore solar systems, play cards in cantinas, modify your ships and conquer more planets.
- 13
Stargate: Timekeepers
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Stargate: Timekeepers is a real-time tactics game where you lead a team of specialists through a story-driven campaign set in the SG-1 universe. Sneak your characters behind enemy lines, use their unique skills, craft the perfect plan to unravel a timeloop mystery, and defeat the Goa’uld threat.
- 14
ENDLESS™ Legend
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
ENDLESS™ Legend is a 4X turn-based fantasy strategy game by the creators of ENDLESS™ Space and Dungeon of the ENDLESS™. Control every aspect of your civilization as you struggle to save your homeworld Auriga. Create your own Legend!
- 15
Interstellar Space: Genesis
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Interstellar Space: Genesis is a turn-based space 4X strategy game in which you attempt to build a thriving galactic empire. Discover mysteries among the stars, colonize worlds, and engage enemies in tactical turn-based combat on your journey to becoming the ruler of the galaxy!
- 16
Sins of a Solar Empire II
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Battle for galactic dominance in this real-time 4X strategy game with unrivaled scale! You’ll explore, expand, exploit, and exterminate through military force, diplomacy, trade, culture, influence, and other underhanded tactics.
- 17
Ashes of the Singularity: Escalation
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
A massive-scale real-time strategy game where you command entire armies on a dynamic battlefield. Conquer multiple worlds across several single-player campaigns; or play with your friends in multiplayer combat.
- 18
Star Control®: Origins
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required.
Star Control is a space role-playing game in which you command Earth's first interstellar starship on a mission to save the Earth from hostile alien empires.
- 19
Fallen Enchantress: Legendary Heroes
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Fallen Enchantress is 4X strategy game from the makers of Sins of a Solar Empire and Galactic Civilizations. Build a civilization in the magical world of Elemental. Recruit heroes, train armies, build cities, forge alliances and save the world in this rich world where it's never the same game twice.
- 20
The Political Machine 2020
Single-player alternative to Galactic Civilizations III — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations III.
Win the hearts and minds of America’s voters and take the 2020 presidential election by storm in Stardock’s popular political strategy game. Choose a candidate and run against a computer opponent or a candidate controlled by another person over the Internet.