Gaia Maker

Gaia Maker

Garkimasera Games · March 4, 2026 · Simulation, Sandbox, God Game, Physics, Idler

Gaia Maker is free to play — no purchase needed. We track it so you know if that ever changes.

PC
Positive94% · 35
This game is free to play. Get it on Steam →

Screenshots

Gaia Maker price

Gaia Maker is free to play — there is no purchase price, on Steam or anywhere else we track. We keep watching it, so if it ever stops being free the price history on this page will show when that happened and what it changed to.

About Gaia Maker

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. 

Gaia Maker — game info

Platforms
Windows, Linux / SteamOS
Steam Deck
Playable
Player modes
Single-player
PC Game Pass
Not included
More games like this:Linux games

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended May 28, 2026
Gaia Maker is a great free game to spend time. At first I couldn't understand but after I got the hang of it watching and growing civilizations and planets was so cool. Overall, I hope this game continues to get updates and new features. One thing to note: I feel like the game is too easy (especially if you know what everything does) when you speed it up. I wish it was a little bit more balanced on the difficult side. The game also doesn't require any high end device to run, as my HP Laptop (far from any good gaming PC) can run it easily with 150+ fps.
3 found this helpful
Recommended Apr 11, 2026
✋😐🤚 Absolute cinema. Period.
2 found this helpful
Recommended Aug 28, 2026
basically a SimEarth remake, although it feels more like the TurboGrafx version of it, which makes sense since the developer is Japanese. it is pretty good but don't expect much changes from SimEarth, it's very similar
Recommended May 31, 2026
A really cool game, maybe a bit simple but still, incredible, no lag problem and the only "bug" I found was when I clearly was just screxing around trying to spawn a volcano on each tile of the planet and well... yeah but still, good game if you have a couple of hours of boredom (also disrespect to the one guy that did'nt reccomand just because he think some other game is better boo him everyone)
Recommended May 26, 2026
my planet was too efficient and caused the fox civilization to flood my planet, so i set plagues and fires to limit their numbers to give other animals a chance, and caused a total ice age making everyone extinct. LOL. entertaining for a run or two, even if this style of game isn't your usual.
Recommended May 24, 2026
Fun game, reminds me of Sim Earth.

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