Single-player games like Planetes
Below are 5 single-player Steam games similar to Planetes, 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 Planetes page.
Ranked picks
- 1
Signs of Life
Single-player alternative to Planetes — playable solo, no multiplayer required. Shares Action and Indie with Planetes.
Signs of Life is a sci-fi survival sandbox platformer with a combination of procedurally generated and hand-crafted content. You'll explore mysterious locations, Mine blocks for resources, and meet strange (and some familiar) creatures, some of which don't even want to kill you and eat your corpse.
- 2
StarMade
Single-player alternative to Planetes — playable solo, no multiplayer required. Shares Action and Strategy with Planetes.
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
- 3
Dig or Die
Single-player alternative to Planetes — playable solo, no multiplayer required. Shares Action and Strategy with Planetes.
Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.
- 4
Osiris: New Dawn
Single-player alternative to Planetes — playable solo, no multiplayer required. Shares Action and Indie with Planetes.
Osiris: New Dawn is an unforgiving near future space survival game with a cinematic feel and elements of horror. Play as a Mission Specialist in single or multiplayer to build your planetary base, pilotable vehicles, and controllable drones as you explore a dangerous solar system far from Earth.
- 5
FortressCraft Evolved!
Single-player alternative to Planetes — playable solo, no multiplayer required. Shares Strategy and Indie with Planetes.
FortressCraft Evolved is a unique blend of Voxel Landscapes, Tower Defense, Crafting, Logistics, Exploration, Combat and Assembly lines. Players begin by crash-landing on a strange alien world, left with only a small handful of starting machines.