Single-player games like Signal Simulator
Below are 8 single-player Steam games similar to Signal Simulator, 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 Signal Simulator page.
Ranked picks
- 1
Scavenger SV-4
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Signal Simulator.
Scavenger SV-4 is a highly replayable atmospheric first-person science fiction game. Part simulator, part roguelike, it has elements of action, combat, resource management, and a dash of horror. It is not quite like any game you have played before.
- 2
Observation
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Indie with Signal Simulator.
Observation is a sci-fi thriller uncovering what happened to Dr. Emma Fisher, and the crew of her mission, through the lens of the station’s artificial intelligence S.A.M.
- 3
Take On Mars
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Simulation with Signal Simulator.
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.
- 4
The Station
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Indie with Signal Simulator.
The Station is a first-person sci-fi mystery set on a space station sent to study a sentient alien civilization. Assuming the role of a recon specialist, players must unravel a mystery which will decide the fate of two civilizations.
- 5
SpaceEngine
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Signal Simulator.
The world's first science-based photorealistic interactive 3D planetarium that models the entire Universe, using procedural generation for uncharted areas.
- 6
Rover Mechanic Simulator
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Signal Simulator.
As an Engineer - crew member of one of the first Mars colonies - you are responsible for repairing and maintaining Mars Rovers. In this advanced simulator you will learn the internal details of various Mars Rovers and their components.
- 7
Moons of Madness
Single-player alternative to Signal Simulator — playable solo, no multiplayer required.
Moons of Madness is a first-person, story-driven cosmic horror game where the scientific exploration of Mars meets the supernatural dread of Lovecraft.
- 8
Kerbal Space Program
Single-player alternative to Signal Simulator — playable solo, no multiplayer required. Shares Indie and Simulation with Signal Simulator.
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.