Single-player games like Star Ruler 2
Below are 11 single-player Steam games similar to Star Ruler 2, 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 Star Ruler 2 page.
Ranked picks
- 1
Star Ruler
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Star Ruler 2.
Take command of a vast interstellar empire and safeguard your species from total extinction in a procedurally generated 3D galaxy (with the option to flatten it) from 1 System to 10,000+! Prove your species' ingenuity through a deep and intricate combat system where anything (from individual components on ships to the stars themselves)...
- 2
Galactic Civilizations III
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
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
Distant Worlds: Universe
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
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.
- 4
Sins of a Solar Empire®: Rebellion
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Star Ruler 2.
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
AI War: Fleet Command
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy and Indie with Star Ruler 2.
"You are outgunned. You are massively outnumbered. You must win." These are your orders. Humanity has already fought its war against the machines -- and lost. AI death squads stand watch over every planet and every wormhole, the few remaining human settlements are held captive in orbiting bubbles, and the AIs have turned their...
- 6
Stellaris
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
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
Battlefleet Gothic: Armada 2
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
Battlefleet Gothic: Armada 2 is the new real-time strategy game adapted from Games Workshop’s famous tabletop game that portrays the epic space battles of the Warhammer 40,000 universe.
- 8
Space Empires V
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
Space Empires V is the latest edition in the Space Empires series. This new chapter completely updates the UI and takes the player into a real-time rendered 3D universe. Watch space battles played out in glorious detail and realistic effects. Expand, Explore, Exploit, and Exterminate in a huge living breathing galaxy.
- 9
Shadow Empire
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
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.
- 10
Sins of a Solar Empire II
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
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
Master of Orion
Single-player alternative to Star Ruler 2 — playable solo, no multiplayer required. Shares Strategy with Star Ruler 2.
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.