Single-player games like Solarium
Below are 8 single-player Steam games similar to Solarium, 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 Solarium page.
Ranked picks
- 1
Astronomy3D: Artemis II
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure and Simulation with Solarium.
Explore more than 2,900 carefully selected photos from the Artemis II mission in an interactive 3D space, featuring distant views of Earth, the Moon's far side, ancient craters, earthrise, earthset, and a solar eclipse. Photo credit: NASA / Artemis II crew
- 2
Space Planet Explorer
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure and Simulation with Solarium.
One wrong jump ends the mission. Explore 76 real worlds, from Mercury to TRAPPIST-1e, built from NASA data and astronomical research. Manage scarce resources, survey distant worlds, and search for humanity's new home in a science-driven space roguelite where every run could be your last.
- 3
PlanetMars3D: Spirit Mission
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure and Simulation with Solarium.
Explore Mars in 3D through real Pancam photographs from NASA's Spirit rover. Glide between images with detail that sharpens as you approach, and skim thousands of rover photos at a glance — manual mode, slideshow, or automated flythrough. Photo credit: JPL / NASA / Cornell / ASU
- 4
The Tracy Arm Tsunami Experience
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure and Simulation with Solarium.
Explore Tracy Arm, Alaska and trigger a massive landslide tsunami in a first-person simulation with land, air, and water viewpoints.
- 5
Ice Caves of Europa
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure and Simulation with Solarium.
Ice Caves of Europa will challenge your reflexes and your mind, blending free-flowing precision flight with confronting science fiction ideas about the nature of humanity. An inquisitive flying robot exploring the hazardous caves beneath Europa stumbles upon a sinister interplanetary conspiracy.
- 6
Crossarium
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure with Solarium.
Dive into a story-driven game about a newspaper editor at a small American publishing house in the 1980s.
- 7
Salty: Evolution Simulator
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure and Simulation with Solarium.
A lone spark of life, one fragile cell adrift in a vast, chaotic world. Feed, grow, adapt, outmaneuver predators, survive viral invasions, and assemble new organelles that reshape your abilities and your destiny. You're learning the science the whole time, too immersed in survival to notice.
- 8
Celestial Golf
Single-player alternative to Solarium — playable solo, no multiplayer required. Shares Adventure with Solarium.
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.