Single-player games like Spiritus Astrum
Below are 8 single-player Steam games similar to Spiritus Astrum, 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 Spiritus Astrum page.
Ranked picks
- 1
No Man's Sky
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required.
No Man's Sky is a game about exploration and survival in an infinite procedurally generated universe.
- 2
Elite Dangerous
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Simulation with Spiritus Astrum.
Take control of your own starship and blaze your trail in an ever-changing galaxy. Master the arts of combat, mining and trade or venture out into the unknown across a 1:1 scale universe.
- 3
Ostranauts
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Indie and Simulation with Spiritus Astrum.
Navigate your scrappy ship through the boneyard in search of valuable parts in abandoned vessels. Use salvage to upgrade your ship, or sell it for cash to pay down your mounting debt, or restock fuel, air, or food. Fly and role-play aboard your dream spaceship in this hardcore noir space-sim.
- 4
Archean
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Indie and Simulation with Spiritus Astrum.
Gather resources, craft components, build vehicles, and code their logic in a physics-driven engineering sandbox and full scale space sim.
- 5
PANELKI
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Indie and Simulation with Spiritus Astrum.
A utility worker earns for a ticket to leave the endless Siberian city of panel houses. Permafrost, day/night cycle, dynamic weather and open world. Feel the atmosphere of the northern city, having been in the role of a handyman. Now with multiplayer!
- 6
Chaos Express: Delivery Simulator
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Indie and Simulation with Spiritus Astrum.
Deliver goods with your friends in open-world city. Manage and upgrade your delivery point, acquire new ways of delivery and become the best.
- 7
Rebel Galaxy
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Indie and Simulation with Spiritus Astrum.
Rebel Galaxy is a swashbuckling space adventure, with action-packed combat, exploration, discovery, trade, and “negotiation” with the outlandish denizens at the edge of the known universe.
- 8
PULSAR: Lost Colony
Single-player alternative to Spiritus Astrum — playable solo, no multiplayer required. Shares Indie and Simulation with Spiritus Astrum.
The co-op open-world space sim where everyone has a role! Pilot the ship. Reroute power. Launch nukes. Explore alien planets. Research new talents. Work together to find the Lost Colony! ...or just deliver some biscuits