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Gaia CD Key

Seed life across nine planet types, studying evolution and extinction while you adapt a dynamic counting base to life's complexity. Research genetics and ecology, spread life to new worlds, and unlock higher numbers. 40–50 hours, offline progression; a solo-developed biology sim.
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Current Lowest Price

2.99$
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Release Date

03 Mar, 2026

Publisher/Developer

Joseph Sak

Reviews

Steam: 92.31% positive (12/13)
Metacritic: -

Gaia Steam Price History Chart

Current Steam price: 2.99$
Lowest Steam price ever: 2.99$ — 2026-10-19 — Current low
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Gaia description

Gaia

You awaken as a nascent presence on a lone speck of rock adrift in an abyss of blackness. You possess the ability to create life, yet birth is fickle, fragile, and deeply persistent. Your purpose is to seed the universe, observe your creations, and grow ever better at guiding life toward thriving worlds.

Gaia is an evolutionary sandbox where research and experimentation drive every decision. Study how your creatures adapt, survive, and interact under hostile conditions. Use what you learn to refine strategies, then transfer those methods to new worlds, letting life spread and flourish across the cosmos.

At its core, the game plays with numbers in a dynamic way. Instead of fixed digits, the counting base shifts with the complexity of life you cultivate. Growth is not limitless; each planet imposes a carrying capacity that bounds what you can count and achieve. To reach higher values, you must expand life’s reach, unlocking new tiers of computation that mirror expanding ecosystems.

Evolution is not a backdrop—it is your engine. Extinction and adaptation are built into every cycle. You’ll encounter topics from a college course in biology: symbiosis, evolution, sexual reproduction, genetics, predation, and more. Each discovery opens new possibilities for your next worlds and your continued stewardship of life.

Explore nine distinct planet types, each with unique environments, challenges, and hidden secrets. Revisit worlds as you bring fresh knowledge from elsewhere, uncovering layers of complexity and opportunities to improve survival strategies for your lifeforms.

Gaia offers a deep, thoughtful progression: expect roughly 40–50 hours of gameplay, with significant offline progression available if you play in shorter bursts. The title is the work of a solo developer, guided by dedicated play testers to ensure each mechanic feels rewarding and meaningful.

Prepare to seed, study, and expand. Nurture life through evolving ecosystems, learn the curves of survival, and propagate your wisdom across the stars. Gaia invites patience, curiosity, and the satisfaction of watching simple beginnings blossom into resilient, interconnected worlds.