Single-player games like Mars Horizon
Below are 16 single-player Steam games similar to Mars Horizon, 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 Mars Horizon page.
Ranked picks
- 1
Mars Horizon 2: The Search for Life
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Strategy and Simulation with Mars Horizon.
Lead your space agency in The Search for Life in this authentic strategy simulation game. Investigate the solar system and collect evidence of life. Manage base building, rocket designing, launches, and mission planning to Mars and beyond, leading the way in the future of space exploration.
- 2
Take On Mars
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Simulation with Mars Horizon.
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.
- 3
Kerbal Space Program
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Indie and Simulation with Mars Horizon.
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.
- 4
Enter The Moon
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Simulation with Mars Horizon.
Space simulation moon game. Explore the moon, mars, venus and mercury in breathtaking real-time 3D. Explore their geological aspects. Battle against spaceships or a secret lunar base. Enter the ISS. Measure the moon. And get in the cockpit.
- 5
Rover Mechanic Simulator
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Indie and Simulation with Mars Horizon.
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.
- 6
Mars First Logistics
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Indie and Simulation with Mars Horizon.
Build physically simulated rovers to transport awkwardly shaped cargo across the rugged terrain of Mars. Earn funds, unlock new parts, and use your ingenuity to help the Martians establish a new home. Playable solo or in online co-op!
- 7
Meco Rocket Simulator
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Simulation with Mars Horizon.
Meco Rocket Simulator is a realistic physics game where you play as an underpaid rocket scientist working for Mecodyne to design and test rocket engines without regard for your safety.
- 8
PlanetMars3D: Spirit Mission
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Indie and Simulation with Mars Horizon.
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
- 9
Warhammer 40,000: Boltgun
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Indie with Mars Horizon.
Load up your Boltgun and unleash the awesome Space Marine arsenal to blast your way through an explosion of sprites, pixels and blood in a perfect blend of Warhammer 40,000, frenetic gameplay and the stylish visuals of 90’s retro shooters.
- 10
Starship Troopers: Ultimate Bug War!
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Indie with Mars Horizon.
Lock and load into the Starship Troopers universe and join the Mobile Infantry in the most realistic depiction of war ever made! Experience an original story in this action-packed, first-person retro shooter. Would you like to know more?
- 11
Brewmaster: Beer Brewing Simulator
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Simulation with Mars Horizon.
Brew your perfect beer in this relaxing home brewing sim. Use a realistic chemistry simulation to brew hoppy IPAs to creamy stouts. Customise your brewing space, create recipes and label your beer, unlock new equipment and enter competitions. Learn to brew, refine your craft and become a Brewmaster!
- 12
Dark Future: Blood Red States (Classic)
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Mars Horizon.
Step into the extraordinary, dystopian world of Dark Future, filled with danger, chaos and adventure. A game of both action and strategy unlike any other, featuring a unique time dilating command mode to help you make tactical decisions on the dangerous highways of this world.
- 13
Chainsaw Warrior (Classic)
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Mars Horizon.
Chainsaw Warrior from Games Workshop is the classic game for one strong-nerved player! It's 2032 and spatial warping has opened a hole into another dimension in the midst of the old municipal buildings at the heart of Manhattan. Bizarre and dangerous creatures are flooding into our dimension.
- 14
Ogre
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Mars Horizon.
The official adaptation of the legendary wargame from Steve Jackson Games. Engage in futuristic warfare with armored hovercraft, superheavy tanks, infantry, and giant cybernetic war machines called "Ogres".
- 15
Achtung! Cthulhu Tactics
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Mars Horizon.
Challenge the horrifying reign of Nazi terror and battle an immortal evil in Achtung! Cthulhu Tactics; a turn-based tactical strategy game set in the award-winning Achtung! Cthulhu universe.
- 16
Chainsaw Warrior: Lords of the Night (Classic)
Single-player alternative to Mars Horizon — playable solo, no multiplayer required. Shares Strategy and Indie with Mars Horizon.
Based on the 1987 Games Workshop classic, a battle vs zombies cultists & time! Fight against hordes of Aztec Zombies, and the clock, to save reality from Darkness. Lords of the Night introduces an upgraded combat system, new weapons, powers, equipment and unique mini bosses.