Single-player games like Beyond Astra
Below are 8 single-player Steam games similar to Beyond Astra, 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 Beyond Astra page.
Ranked picks
- 1

Reshaping Mars
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Indie with Beyond Astra.
「Reshaping Mars」is a colony simulation game on Mars, you will start by gathering resources, storing food, accepting immigrants, and building a better colony together. Develop powerful technologies for Mars Reshaping, make Mars great agai..sorry, just great. Don't forget to make the residents happy.
- 2

Stellaris
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Simulation with Beyond Astra.
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.
- 3

Distant Worlds: Universe
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Simulation with Beyond Astra.
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

Startopia
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Simulation with Beyond Astra.
A once thriving network of space stations and planets have been left lifeless, redundant scars of the apocalypse. Into this age of darkness comes light. You will lead the way in rebuilding the network of space stations to a standard accepted by the individual alien races, attracting them to harness their expertise and research new...
- 5

NEBULOUS: Fleet Command
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Simulation with Beyond Astra.
Take command of your hand-tailored fleet of space warships and use realistic radar, electronic warfare, advanced movement controls in 3D space, and precision targeting to outmaneuver and outwit your opponents in a simulation-heavy tactical space game like no other.
- 6

Here Comes The Swarm
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Indie with Beyond Astra.
Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?
- 7

Distant Worlds 2
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Simulation with Beyond Astra.
Distant Worlds 2 is a vast, pausable real-time 4X space strategy game.
- 8

Industries of Titan
Single-player alternative to Beyond Astra — playable solo, no multiplayer required. Shares Strategy and Indie with Beyond Astra.
Create a sprawling industrial city. Compete with other rival corporations on Titan for resources, territory, and power. Seek victory via technology, influence, warfare, or the wealth extracted from your citizens. Stake your claim to the Industries of Titan in this innovative sim/strategy game!