Single-player games like Project Eagle: A 3D Interactive Mars Base
Below are 14 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
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.
- 2
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.
- 3
Rover Mechanic Simulator
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.
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.
- 4
Surviving 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.
There will be challenges to overcome. Execute your strategy and improve your colony’s chances of survival while unlocking the mysteries of this alien world. Are you ready? Mars is waiting for you.
- 5
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!
- 6
Terraformers
Single-player alternative to Project Eagle: A 3D Interactive Mars Base — playable solo, no multiplayer required.
Terraform Mars in this turn-based colony builder and resource management game with roguelike elements. Explore the planet, develop spectacular cities, spread life and turn the Red Planet into a green one!
- 7
SpaceCorp: 2025-2300AD
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 mankind's exploration into outer space! Build bases on the Moon and Mars, survey the rings of Saturn, and send generational Colony ships to Alpha Centauri, all in one sitting! SpaceCorp: 2025-2300 AD is a fast-playing, single-player, turn-based, sci-fi strategy game.
- 8
Kerbal Space Program
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.
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.
- 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
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.
- 11
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.
- 12
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!
- 13
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.
- 14
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.