Single-player games like Space Planet Explorer
Below are 9 single-player Steam games similar to Space Planet Explorer, 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 Space Planet Explorer page.
Ranked picks
- 1
Celestial Golf
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Indie with Space Planet Explorer.
It’s 2D golf on an astronomical scale. Bite-sized missions will teach you the techniques of real space flight, without having to worry about fuel or crew. Precisely plan orbital trajectories over the moons of Mars, through the rings of Saturn, and boldly go where no golf ball has gone before.
- 2
Galactic Simulator2: Stargate
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Indie with Space Planet Explorer.
Galactic Simulator 2: Stargate is a roguelite simulation game inspired by the Fermi Paradox and the Great Filter. Pilot your ship, gather resources, build stargates, and discover other civilizations as you explore an ever-evolving galaxy.
- 3
Void Salvage
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Indie with Space Planet Explorer.
Void Salvage is a spaceship simulation with node-based upgrades and choice-driven encounters. Combine weapon augments, modules, drones, and sockets to build a powerful ship. Unlock strategic control-panel actions for auto-combat, then prestige to pursue different paths through the story.
- 4
IPS 13: All Signals Lost
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Simulation with Space Planet Explorer.
Take command of the massive VOD(Vehicle of Destruction) and journey across planet Gaiganthra with your IPS(Inter-Planetary Squad)-13 crew to uncover the mystery of humans there. Be prepared for the worse and ready to fight. Upgrade your VOD, hire new crew factions, to be the ultimate War Machine.
- 5
Voyager 2
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Indie with Space Planet Explorer.
Launch the Voyager space probe to the furthest depths of the Solar System! Use gravity to slingshot around planets and scan, orbit, or land on targets to earn stunning replays of your accomplishments.
- 6
Kerbal Space Program
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Indie and Simulation with Space Planet Explorer.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 7
Mars Horizon
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Indie with Space Planet Explorer.
Lead a major space agency as you guide humanity to Mars in this strategy simulation game. Construct a base, design and build rockets, conduct missions throughout the Solar System, and write your own history of Space exploration. Created with support from the European Space Agency.
- 8
Take On Mars
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Simulation with Space Planet Explorer.
Take On Mars places you right in the middle of mankind’s most exciting undertaking. Start out in the seat of a rover operator, finish as the first human to have ever set foot on the Red Planet.
- 9
Biosphere Simulator
Single-player alternative to Space Planet Explorer — playable solo, no multiplayer required. Shares Strategy and Indie with Space Planet Explorer.
Biosphere Simulator is a planetary god game sandbox where you guide a dead volcanic world through billions of years of evolution. Seed life, shape ecosystems, unleash cataclysms, and watch civilizations rise from primordial microbes to spacefaring societies.