Single-player games like Galactic Civilizations® II: Ultimate Edition
Below are 13 single-player Steam games similar to Galactic Civilizations® II: Ultimate Edition, 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® II: Ultimate Edition page.
Ranked picks
- 1
Galactic Civilizations III
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.
- 2
Galactic Civilizations IV
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
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.
- 3
Sins of a Solar Empire®: Rebellion
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Civilizations® II: Ultimate Edition.
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.
- 4
ENDLESS™ Space - Definitive Edition
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
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.
- 5
Stellaris
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
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.
- 6
Civilization IV: Beyond the Sword
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
Sid Meier's Civilization IV®: Beyond the Sword is the second expansion pack for Civilization IV - the 2005 PC Game of the Year that has become a worldwide hit.
- 7
Fallen Enchantress: Legendary Heroes
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Civilizations® II: Ultimate Edition.
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.
- 8
Age of Wonders: Planetfall
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
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.
- 9
Tiny Civilization
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
This is a historical simulation game that promotes the development of civilization based on the match-3 Game. You'll need to gather resources, use skills, discover new technology, and lead humanbeing through a 10,000-year journey to the cosmos.
- 10
Sins of a Solar Empire II
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
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.
- 11
Ashes of the Singularity: Escalation
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy with Galactic Civilizations® II: Ultimate Edition.
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.
- 12
Star Control®: Origins
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — 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.
- 13
The Political Machine 2020
Single-player alternative to Galactic Civilizations® II: Ultimate Edition — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Civilizations® II: Ultimate Edition.
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.