Single-player games like Project Eagle: A 3D Interactive Mars Base
Below are 16 single-player Steam games similar to Project Eagle: A 3D Interactive Mars Base, 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 Project Eagle: A 3D Interactive Mars Base page.
Ranked picks
- 1
Terapixel Mars
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
Terapixel Mars is a real-time planetary experience that lets you traverse the Red Planet seamlessly from orbit down to the surface. Powered by the Terapixel engine, Mars is stored in the cloud and streamed to your system, enabling a level of scale and immersion unmatched by any existing experience.
- 2
PlanetMars3D: Spirit Mission
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
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
- 3
Enter The Moon
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
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.
- 4
Rocket Explorer
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
Rocket Explorer is a rocket viewing experience, where you can view the rockets of the world with your own eyes. Also in Virtual Reality! Launch rockets, compare them side by side, and take them apart.
- 5
Mars Horizon
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
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.
- 6
Take On Mars
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
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.
- 7
Mars Horizon 2: The Search for Life
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
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.
- 8
OVERVIEW (A Walk Through The Universe)
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
Overview is a mind-changing experience about our position in the Universe. With a narrative and an interactive mode, it features realistic imagery and accurate data to leave you in awe and wonder at the vastness of the Cosmos.
- 9
Escape the Backrooms
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required.
Escape the Backrooms is a 1-4 player co-op horror exploration game. Traverse 30+ eerie backrooms levels while avoiding entities and other dangers. Try to escape but be warned: survival isn't guaranteed.
- 10
Hardspace: Shipbreaker
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
Equipped with cutting-edge salvaging tech, carve & slice spaceships to recover valuable materials. Upgrade your gear to take on more lucrative contracts and pay your billion credits debt to LYNX Corp!
- 11
Homeworld: Deserts of Kharak
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required.
A ground-based RTS prequel to the classic Homeworld games. Assemble your fleet and lead them to victory on the shifting sands of Kharak in this compelling strategy game for PC from Blackbird Interactive.
- 12
Homeworld 3
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
Tactical, beautiful, and wholly unique, the GOTY-winning sci-fi RTS returns with Homeworld 3. Assume control and battle through fleet combat in dazzling, fully 3D space while the award-winning story unfolds on a galactic scale.
- 13
Minecraft Legends
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required.
Discover the mysteries of Minecraft Legends, a new action strategy game. Explore a gentle land of rich resources and lush biomes on the brink of destruction. The ravaging piglins have arrived, and it’s up to you to inspire your allies and lead them in strategic battles to save the Overworld!
- 14
Crossfire: Legion
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required.
Crossfire: Legion is a real time strategy game featuring tactical action in furious battles across a shattered version of the near future. Raise and customize your army to engage in intense online combat and carve your own path as you rise through the ranks. It’s a new generation of warfare.
- 15
Ambrosia Sky: Act One
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required. Shares Simulation with Project Eagle: A 3D Interactive Mars Base.
You left. Now they’re dead. Ambrosia Sky: Act One is an immersive sim about exploring an asteroid colony devastated by an unknown contamination. Survive and harvest strains of hostile alien fungi, explore treacherous environments, and find meaning and beauty in so much death—the first of two acts.
- 16
Earthless
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required.
EARTHLESS is a sci-fi, roguelike deckbuilder where humankind has been thrust into the cosmic wind on a fleet of starships captained by you. To find a new home, you must draw your own path through the stars and play the hand you’re dealt. You are our hope in the darkness.