Single-player games like Astrosphere
Below are 9 single-player Steam games similar to Astrosphere, 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 Astrosphere page.
Ranked picks
- 1
Space Haven
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy with Astrosphere.
Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.
- 2
ExoColony: Planet Survival
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy with Astrosphere.
Challenging space-colony sim. Guide generations of colonists, raise and educate them, manage resources, and ensure food supply. Maintain a breathable atmosphere, tackle pollution, and refine materials to build essential structures. Terraform planet and build ecosystem to make it your new home.
- 3
Surviving Mars
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy with Astrosphere.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 4
Dyson Sphere Program
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy and Early Access with Astrosphere.
Build the most efficient intergalactic factory in space simulation strategy game Dyson Sphere Program! Harness the power of stars, collect resources, plan and design production lines and develop your interstellar factory from a small space workshop to a galaxy-wide industrial empire.
- 5
Stellar Settlers: Space Base Builder
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy with Astrosphere.
Stellar Settlers is a chill space base/city builder and colony sim game. With unique vertical and horizontal base-building gameplay, settle on 10 hostile alien planets and build your own thriving colony. Get enough materials to build a physics-based Spaceship and try to escape from disasters.
- 6
The Final Earth 2
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy with Astrosphere.
The Final Earth 2 is a vertical sci-fi city builder. Earth is unlivable, so you decide to create a space colony. Gather resources, then build and research your way to a better future! Grow your city from an exploration ship to a huge metropolis, full of advanced technology. What will you build?
- 7
The Crust
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Strategy with Astrosphere.
Build and automate a lunar colony that Earth depends on. Mine regolith, run conveyor-and-drone factories above and below the surface, manage colonists, trade with rival Earth factions — and play a story campaign with multiple endings.
- 8
Galactic Crew
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Action and Strategy with Astrosphere.
Galactic Crew II is a roguelike space exploration game inspired by FTL and the classic XCOM games. You and your valorous crew members will explore a galaxy with all its dangers and riches. Explore and colonize planets, customize your spaceship, raid underground dungeons, mine, trade and craft!
- 9
Hell Grinder
Single-player alternative to Astrosphere — playable solo, no multiplayer required. Shares Action with Astrosphere.
An intense 2D action rogue-lite game. Fight your way level by level through masses of demons and defeat bosses to delve deeper into hell. Collect demon souls to unlock permanent skills and weapons and become even more powerful.