Single-player games like Cosminers
Below are 8 single-player Steam games similar to Cosminers, 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 Cosminers page.
Ranked picks
- 1
Planet Gemini
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Indie with Cosminers.
Planet Gemini is a factory-building and tower defense game. After crash-landing on two planets during an interdimensional journey, fend off waves of enemies and research a portal to survive.
- 2
Mr. Nomad
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Action and Indie with Cosminers.
Mr. Nomad is a survival base-building, tower defense game set in a post-apocalyptic world. Set a fortified base around your camper, craft, endure brutal zombie raids, hide what is precious to you in underground bunker and embark on dangerous missions in search of resources.
- 3
Ghostorio
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Indie and Adventure with Cosminers.
Build automated factories in a bright afterlife. Mine, belt, power, and produce at massive scale, then defend your work from the spirits it attracts. A third-person factory game of automation, base building, and tower defense.
- 4
Nuclear Epoch
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Indie and Adventure with Cosminers.
Nuclear Epoch: Open-world survival mixing base building & extraction shooting. Explore with friends, raid dangerous instances for loot, but death means losing everything. Craft weapons with fully customizable stats in this post-apocalyptic wasteland.
- 5
Deepworks
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Indie and Simulation with Cosminers.
Earth is gone. The fleet is hungry. Drop a Hub on a generated claim, find the seam, and let the robots dig. Every machine you build makes noise — and noise is how the machines that took the planet find you. Hold the line, launch with the take, sell it, and go deeper.
- 6
Tremble of Towers
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Action and Indie with Cosminers.
Tremble of Towers is a CO-OP tower defense game where you can build any structure with any resource. Countless of combinations are waiting for you and your friends to be discovered in order to protect your beloved Goal Stone from all kinds of enemies in various maps!
- 7
Alien Farmer
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Action and Indie with Cosminers.
Alien Farmer is a farming, light automation, tower defense game set on a hostile alien world. Farm, mine, and build an automated base by day, then defend it against deadly creatures by night. Explore, expand, and survive alone or in co-op.
- 8
Industronaut
Single-player alternative to Cosminers — playable solo, no multiplayer required. Shares Indie and Adventure with Cosminers.
A survival engineering game where you build life support habitats, mine resources, and automate production chains on a radiation heavy planet. No rescue. No support. Just engineering.