Single-player games like Unending Galaxy
Below are 10 single-player Steam games similar to Unending Galaxy, 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 Unending Galaxy page.
Ranked picks
- 1
X3: Reunion
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy with Unending Galaxy.
X3: Reunion continues the epic space saga, blending deep space trading and intense real-time combat. Explore a vast universe, establish your empire, and shape the new frontier. With enhanced graphics and intricate economies, it's a journey of strategy, simulation, and interstellar intrigue.
- 2
Distant Worlds: Universe
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Unending Galaxy.
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.
- 3
Stellaris
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Unending Galaxy.
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.
- 4
Void Destroyer 2
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Unending Galaxy.
Start with nothing... End with everything! All you have is a basic ship, barely fit for combat, with it you'll start your journey and empire. A open world space sandbox, inspired by and expanding the classics.
- 5
Starpoint Gemini Warlords
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Unending Galaxy.
Strategy from the front lines! Starpoint Gemini Warlords combines 3rd person capital spaceship combat with 4X strategy and RPG gameplay elements. Build mighty war fleets and send them into battle or lead them into combat yourself. Become the Warlord and conquer the Gemini system!
- 6
Polaris Sector
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Unending Galaxy.
Can anyone build an empire in a place like this? Other factions are naturally suspicious of newcomers and may wage war at the first sign of unidentified craft. Here, a natural death is an uncommon luxury.
- 7
X2: The Threat
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy with Unending Galaxy.
X²: The Threat is of a new generation of space simulator games, you play the role of Julian Gardna who continues the story set by X: Beyond The Frontier. The updated graphics engine gives the universe a fresher feel with newly designed ships and stations adding to the complexity of the universe.
- 8
Interstellar Pilot 2
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Unending Galaxy.
The hit mobile game Interstellar Pilot 2 has come to Steam. Join the TEF forces heading to the Gatopean sector to find a new home for mankind. Play how you like in this open world space-sim developed by Pixelfactor.
- 9
X3: Terran Conflict
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Simulation with Unending Galaxy.
It is the year 2938. The long wished-for encounter of the X Universe and the Earth holds both joy and sorrow for the people. Despite flourishing trade, the clash of the diverse races, cultures and life forms creates new tensions, mistrust and open conflict that need to be overcome!
- 10
After the Collapse
Single-player alternative to Unending Galaxy — playable solo, no multiplayer required. Shares Strategy and Indie with Unending Galaxy.
ATC is a base building game set in a post-apocalyptic world featuring urban environments. Build a base across several layers with dozens of survivors. Fight other factions for the control of the remaining production centers and explore the world to find long forgotten resources and technologies.