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Gaia Maker

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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.

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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

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Minimum

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

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

English, Japanese

Latest news

  • Patch NotesOfficial

    Update to version 1.0.1

    Bug FixesFixed an issue where exodus events remained on tilesFixed achievement text
    Read 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 animals
    Read full article on Community Announcements (t.okubo.rx78)

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