Single-player games like GalactiWar - Empire Simulator
Below are 9 single-player Steam games similar to GalactiWar - Empire Simulator, 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 GalactiWar - Empire Simulator page.
Ranked picks
- 1

Thveit
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with GalactiWar - Empire Simulator.
Thveit is a cozy Norse settlement builder where changing seasons, ancient beliefs, and folklore creatures shape the fate of your settlements. Guide your settlers, manage resources, and grow a thriving community as humans and mythical beings learn to live side by side.
- 2

Terra Invicta
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Simulation with GalactiWar - Empire Simulator.
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.
- 3

Lord of Rigel
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with GalactiWar - Empire Simulator.
Lord of Rigel is a turn-based 4X space strategy game inspired by the classics. In a galaxy divided by two elder races, will you unite with other species or forge your own path? Navigate galactic politics and defeat threats using espionage, research, and military force. How will you shape the galaxy?
- 4

The End of History
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with GalactiWar - Empire Simulator.
A historical sandbox simulation where every NPC lives their own life. They don't wait for you—they ally, marry, betray, and die. Kingdoms rise and fall by someone's will. Sometimes you shape history, sometimes it sweeps you away—an observer of a once-in-a-lifetime story that only you can witness.
- 5

Cosmonautica
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with GalactiWar - Empire Simulator.
Cosmonautica is a fresh take on space trading in a procedurally generated universe, paired with quirky humor for your intergalactic enjoyment.
- 6

Sid Meier's Civilization VII
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Simulation with GalactiWar - Empire Simulator.
The award-winning strategy game franchise returns with a revolutionary new chapter. Sid Meier's Civilization® VII empowers you to build the greatest empire the world has ever known!
- 7

Imagine Earth
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with GalactiWar - Empire Simulator.
Build your own global colonies on distant worlds. Manage energy and resource supplies and produce goods for space trade. Form economic and diplomatic alliances or take over competing corporations. Conduct research to protect your colonists from disasters and avoid a climate crisis.
- 8

Rocket Science
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Simulation with GalactiWar - Empire Simulator.
Take part in a space program. Design spacecrafts and send them off to explore the vast expanses of space. Experience the real scale of the Solar system and the size of its celestial bodies.
- 9

Guns, Blocks, and Steel
Single-player alternative to GalactiWar - Empire Simulator — playable solo, no multiplayer required. Shares Indie with GalactiWar - Empire Simulator.
A tactical multiplayer FPS created by a solo developer as a passion project. Featuring a fully destructible, block-based environment. Gather resources to produce weapons, ammo, and vehicles. Play multiplayer PVP/co-op or singleplayer with bots.