Single-player games like Master of Orion
Below are 18 single-player Steam games similar to Master of Orion, 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 Master of Orion page.
Ranked picks
- 1
Master of Orion 2
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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.
- 2
Galactic Civilizations III
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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.
- 3
Master of Orion 3
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
Experience first-hand the challenges of leading one of 16 different races into unequalled galactic supremacy and face a universe of decisions. Set policies, explore, build, declare war, negotiate - put all these elements into motion to guarantee your place in the annals of space and time.
- 4
Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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
Stellaris
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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
ENDLESS™ Space 2
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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?
- 7
Age of Wonders: Planetfall
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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
Interstellar Space: Genesis
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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!
- 9
Galactic Civilizations® II: Ultimate Edition
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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!
- 10
ENDLESS™ Space - Definitive Edition
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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.
- 11
Sins of a Solar Empire II
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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.
- 12
Company of Heroes
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
Delivering a visceral WWII gaming experience, Company of Heroes redefines RTS by bringing the sacrifice of heroic soldiers, war-ravaged environments, and dynamic battlefields to life. Please visit the "Company of Heroes - Legacy Edition" page for additional user reviews.
- 13
Total War: WARHAMMER II
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
Strategy gaming perfected. A breath-taking campaign of exploration, expansion and conquest across a fantasy world. Turn-based civilisation management and real-time epic strategy battles with thousands of troops and monsters at your command.
- 14
Tiny Civilization
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
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.
- 15
Distant Worlds: Universe
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
Distant Worlds is a vast, pausable real-time 4X space strategy game. Experience the full depth and detail of turn-based strategy, but with the simplicity and ease of real-time, and on the scale of a massively-multiplayer online game.
- 16
Distant Worlds 2
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
Distant Worlds 2 is a vast, pausable real-time 4X space strategy game.
- 17
Adventure Time: Finn and Jake's Epic Quest
Single-player alternative to Master of Orion — playable solo, no multiplayer required.
Team up as Finn and Jake in a 3D adventure of epic proportions! The Land of Ooo has been transformed into a giant video game, and BMO has been kidnapped. Brawl your way through the Witch's garden, Ice Kingdom, Fire Kingdom, and even the Land of the Dead itself to rescue BMO and uncover the evil mastermind!
- 18
Streamlands: Defense
Single-player alternative to Master of Orion — playable solo, no multiplayer required. Shares Strategy with Master of Orion.
A low-poly Tower Defense game inspired by World War I and II, in an original universe.