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Watch trailer on Steam ↗Gaia Maker
Garkimasera Games · Published by Garkimasera Games · Official site ↗
Positive — 94% positive (35 reviews) · 24 achievements
Last updated 8 Oct 2026
Gaia Maker is a planet-wide simulation game of terraforming, based on real physics and geology. As the planet's overseer, wield advanced technologies to reshape barren planets into life-filled worlds. Foster animal life, cultivate civilizations, or destroy them. Their fate is in your hands.
Simulation, Free To Play · 2026 · More free games
Explore the vast potential of planet-wide terraforming as you shape Gaia Maker’s landscapes and destinies. With advanced tools at your disposal, transform desolate planets into bustling worlds teeming with life or civilizations under your guidance.
About this game
Gaia Maker is a planet-wide simulation game of terraforming, based on real physics and geology. Become the planetary overseer and use advanced planetary engineering to terraform lifeless planets into lush green worlds. How the planet develops is entirely up to you.

Planetary Simulation
Various factors across the entire planet, such as insolation, temperature, atmospheric composition, and the carbon cycle, are dynamically simulated based on real physics and geology. Every action the player takes affects all aspects of the planet's condition.

Terraforming
Players are given various means for terraforming. Construct Dyson swarms to secure needed energy, build giant mirrors to regulate stellar light, and produce oxygen necessary for life with oxygen generators.
Animals and Civilizations
You can have animals inhabit planets with suitable environments. Furthermore, you can evolve some animals, granting them civilization.
The development, wars, decline, energy consumption, and planetary impact of civilizations are also meticulously simulated. Civilizations start in the Stone Age and progress until they gain the technology to harness fusion. Players can also influence the population growth and energy consumption of their civilizations, and observe how these parameters affect the evolution of their civilizations.

Diverse Planets
Starting on a planet with existing oceans makes terraforming very easy. However, planets with harsh environments for life, such as ice planets or desert planets, require a slightly different approach to terraforming.
Features
Simulation of the entire planet based on real physics and geology.
Detailed simulation of temperature, biomass, carbon cycle, insolation, and atmospheric composition.
Dynamic gameplay where player actions impact the entire planet.
Resource acquisition via fusion reactors, Dyson swarms, and more.
Various facilities and methods for terraforming (e.g., oxygen generators, aerosol injection).
Animal breeding and habitat expansion.
Simulation of civilizations' evolution and their planetary impact.
Various dynamic events affecting civilizations, such as plagues and wars.
Multiple distinct planet types to terraform.
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: 64bit Windows
- Processor: 64bit Processor
- Memory: 2048 MB RAM
- Storage: 200 MB available space
Recommended
- Requires a 64-bit processor and operating system
- OS: 64bit Windows
- Processor: 64bit Processor
- Memory: 2048 MB RAM
- Storage: 200 MB available space
Supported Languages
Latest news
Patch NotesOfficial
Update to version 1.0.1
Bug FixesFixed an issue where exodus events remained on tilesFixed achievement textRead full article on Community Announcements (garkimasera)AnnouncementsOfficial
Gaia Maker Available Now!
Gaia Maker has been released with the following features added since the demo version:Integration with the Steam's achievement systemNew achievements addedAdditional planet typesAdded terrain modification methods like volcanoes and lasersThis title was developed by adopting a planet-wide simulation as the core gameplay itself. It draws inspiration from the 30-year-old masterpiece, "SimEarth." We are releasing this game for free on Steam, hoping that many people will enjoy it and that it will pave the way for a new wave of "SimEarth-like" titles.Read full article on Community Announcements (t.okubo.rx78)Patch NotesOfficial
Update to version 0.3.0
Demo version 0.3.0 is released. This includes following features:Random animal mutationRandom animal civilizationExodus eventAquatic civilizationNew animalsRead full article on Community Announcements (t.okubo.rx78)






