Single-player games like Lacuna Passage
Below are 9 single-player Steam games similar to Lacuna Passage, 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 Lacuna Passage page.
Ranked picks
- 1

Take On Mars
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Simulation with Lacuna Passage.
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.
- 2

ADR1FT
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie with Lacuna Passage.
ADR1FT is the story of an astronaut who wakes up floating silently in space amongst the debris of destroyed space station…the only survivor of a catastrophic event, left with no memory, a critically damaged EVA suit leaking oxygen and no way home.
- 3

Occupy Mars: The Game
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie and Simulation with Lacuna Passage.
Survive and colonize Mars in a highly technical, open-world sandbox game. Build and upgrade your base, discover new regions, conduct mining operations, retrieve water, generate oxygen, grow crops, and fix broken parts.
- 4

Sol 0: Mars Colonization
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie and Simulation with Lacuna Passage.
Sol 0 is a real time strategy game where you establish the first Martian colony. From the first human footprints on Martian soil to a thriving and self-sustaining colony, Sol 0 imagines a near future using technology that could be available within the next few decades.
- 5

Mars Colony:Challenger
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie and Simulation with Lacuna Passage.
Mars Colony: Challenger is a 3D first / third person game that offers you the challenge of setting up a remote base on the surface of Mars. At its core, the game was derived from a simulator where everything is interactively tied together.
- 6

Surviving Mars: Relaunched
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Simulation with Lacuna Passage.
The award-winning sci-fi city builder is back - remastered, expanded and even more stunning. Colonize Mars and survive the process, from exploration and infrastructure to welcoming colonists and achieving long-term stability. Are you ready? Mars is waiting.
- 7

Reshaping Mars
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie and Simulation with Lacuna Passage.
「Reshaping Mars」is a colony simulation game on Mars, you will start by gathering resources, storing food, accepting immigrants, and building a better colony together. Develop powerful technologies for Mars Reshaping, make Mars great agai..sorry, just great. Don't forget to make the residents happy.
- 8

Mars Horizon
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie and Simulation with Lacuna Passage.
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.
- 9

Tinertia
Single-player alternative to Lacuna Passage — playable solo, no multiplayer required. Shares Indie with Lacuna Passage.
Action-platformer set on a dying planet. Main protagonist - Weldon - must climb a vast expanse of ruins and tackle deadly sentient machines if he hopes to survive.