Single-player games like Galactic Empire
Below are 11 single-player Steam games similar to Galactic Empire, 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 Empire page.
Ranked picks
- 1

Age of Wonders: Planetfall
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy with Galactic Empire.
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.
- 2

Shadow Empire
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy and Simulation with Galactic Empire.
Shadow Empire is a deep turn-based 4X wargame with a unique blend of military focus, procedurally generated content and role-playing features. Players take the seat of the supreme ruler of a small nation, with the goal of reconquering a devastated planet.
- 3

Galactic Civilizations® II: Ultimate Edition
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Empire.
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!
- 4

Sid Meier's Starships
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy with Galactic Empire.
Build and command a fleet of starships and travel between planets as you explore, build, negotiate, and fight to preserve your vision for humanity.
- 5

Sins of a Solar Empire: Trinity®
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Empire.
In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.
- 6

ENDLESS™ Space - Definitive Edition
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy with Galactic Empire.
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.
- 7

Stellaris
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy and Simulation with Galactic Empire.
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.
- 8

Nexus 5X
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Empire.
eXplore, eXpand, eXploit, eXterminate, EXPRESS. All of the depth, diplomacy, conflict and conquest of a turn-based 4X epic but played in fast-paced 60-minute competitive sessions. Play Solo or Multiplayer for 2-8 players.
- 9

Logic Colors
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Indie with Galactic Empire.
Logic Colors is Indie Logic Game in which You move color tiles to solve riddles. Discover rules and relax in 225 unique levels and unlock all items in game! Will You finish them perfectly?
- 10

Broken Lands - Tower Defense
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Strategy and Indie with Galactic Empire.
Get ready for an epic journey to defend Broken Lands against hordes of goblins, dwarves, elves and other nasty fiends using a vast arsenal of towers and spells! Fight on deserts, seas, forests and mountains, customizing your defensive strategy with different tower upgrades and specializations!
- 11

Broken Lands Village
Single-player alternative to Galactic Empire — playable solo, no multiplayer required. Shares Indie with Galactic Empire.
The real world no longer exists! I was trapped in this cursed Village made of inkblots on parchment. Every day I'm stalked by an assasin and stuck in a time loop. None of the residents remember me, although I myself have memories. I need to get out of here ASAP