Single-player games like Terraformers
Below are 12 single-player Steam games similar to Terraformers, 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 Terraformers page.
Ranked picks
- 1

Terraforming Mars
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
The taming of the Red Planet has begun! Corporations are competing to transform Mars into a habitable planet by spending vast resources and using innovative technology to raise temperature, create a breathable atmosphere, and make oceans of water.
- 2

Mars Horizon
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
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.
- 3

Farlanders
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Terraform, strategize, and construct a Martian colony in this retro-inspired turn-based city builder. Create a comfortable living for your citizens, research alien artifacts, and uncover the secrets of the Red Planet.
- 4

Surviving Mars
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
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

Dice Legacy
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Dice Legacy is a dice-based survival city builder set on a mysterious ringworld. Your ship has reached the shore of an uncharted continent. Roll and use your dice to gather resources, expand and defend your settlement, survive the winter and interact with the strange inhabitants of this eerie world.
- 6

Stranded: Alien Dawn
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Brave a new world in Stranded: Alien Dawn, a planet survival sim placing the fate of a small marooned group in your hands. Forge your story through compelling and immersive strategic gameplay as you make vital decisions to protect your survivors.
- 7

StarVaders
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Pilot a powerful mech to fight off the alien invasion in this ULTIMATE fusion of deckbuilding and grid-based tactics. Discover game-breaking combos, rewind time to alter your fate, and protect the future of humanity in this endlessly replayable roguelike.
- 8

Tharsis
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Succeeding in Tharsis requires you to make the best of what you have, even if it happens to be a pair of snake eyes. Certain factors may be outside of your control, but that doesn’t mean they can’t be overcome. Tharsis is not a game about facing the odds. It’s a game about changing them.
- 9

Slipways
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Weave isolated planets into a vast trade empire. Hatch plans. Research game-breaking technologies. Still be done in time for lunch. Enjoy the endless possibilities of a space grand strategy game in 60 minutes flat.
- 10

Terra Nil
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Terra Nil is an intricate environmental strategy game about transforming a barren wasteland into a thriving, balanced ecosystem. Bring life back to a lifeless world by purifying soil, cleaning oceans, planting trees, and reintroducing wildlife, then leave without a trace.
- 11

Sid Meier's Civilization®: Beyond Earth™
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Sid Meier’s Civilization: Beyond Earth is a new science-fiction-themed entry into the award winning Civilization series. As part of an expedition sent to find a home beyond Earth, lead your people into a new frontier, explore and colonize an alien planet and create a new civilization in space.
- 12

Terraformers: First Steps on Mars
Single-player alternative to Terraformers — playable solo, no multiplayer required. Shares Strategy with Terraformers.
Terraformers: First Steps on Mars is a free prologue of Terraformers, featuring an exclusive challenge to lead humanity's first attempt at settling the Red Planet.