Biosphere Simulator — Breathe Life Into a Dead World

The Journey

Three Epochs.
One Living World.

Time advances in epochs. Each era unlocks new systems, new dangers, new possibilities.

I

Geological Era 4,500 — 541 Million BP

Your planet is a hostile, volcanic world of shifting tectonic plates and churning oceans. Shape the continents. Cool the atmosphere. Prepare the conditions for life to emerge.

Plate Tectonics Atmosphere Volcanism Ocean Formation

II

Biological Era 541 Million — Present

Life explodes from primordial soup. Seed your world with microbes. Guide the great chain of evolution — from single cells to insects, fish, reptiles, and mammals. Watch ecosystems self-organize.

DNA Mutation Food Chains Extinction Events Speciation

III

Technological Era Intelligence → Spaceflight

An intelligent species emerges. Guide them from stone tools to cities, from agriculture to industry, from atomic power to the stars. Will they thrive — or consume their world before escaping it?

Tech Trees Civilizations Pollution Space Age

Deep Systems

Every Layer of Life
Fully Simulated

DNA & Mutation

Every species carries real genetic traits. Mutations spread through populations. Advantageous traits dominate. Maladapted lineages die out. Evolution plays out across generations in real time.

Ecosystem Dynamics

Predator-prey relationships play out in real time. Herbivores graze, carnivores hunt, decomposers recycle. Overpopulate one tier and the whole ecosystem collapses. Balance is everything.

Emergent Civilizations

When a species crosses the intelligence threshold, civilization begins. Tech trees unlock. Cities form. Trade routes emerge. Watch them pollute, war, and — if you're lucky — reach for space.

Atmospheric Modeling

O₂, CO₂, methane, water vapor — all tracked. Plant life oxygenates the air. Volcanoes poison it. Industrial civilization warms it. The atmosphere is a living, reactive system.

Catastrophic Events

Meteor strikes. Ice ages. Supervolcano eruptions. Solar flares. Plagues that sweep continents. These aren't obstacles — they're the engine of evolution. Extinction clears the path for what comes next.

Biodiversity Engine

Measure species richness, trophic levels, and ecosystem health with real metrics. A thriving biosphere has layered food webs and diverse niches. Monocultures collapse. Complexity persists.

Living Creatures

48+ Unique Species
Each One Evolved

From deep-sea microbes to apex predators — every creature is procedurally placed, genetically unique, and fighting to survive.

Amoeba

Algae

Coral

Jellyfish

Moss

Fern

Mushroom

Spider

Butterfly

Octopus

Shark

Dolphin

Penguin

Snake

Amoeba

Algae

Coral

Jellyfish

Moss

Fern

Mushroom

Spider

Butterfly

Octopus

Shark

Dolphin

Penguin

Snake

Crocodile

Eagle

Wolf

Fox

Bear

Deer

Lion

Elephant

Gorilla

Whale

Parrot

Kelp

Sequoia

Crocodile

Eagle

Wolf

Fox

Bear

Deer

Lion

Elephant

Gorilla

Whale

Parrot

Kelp

Sequoia

World Geography

13 Distinct Biomes

Every tile on your world map is one of these living ecosystems — each with unique carrying capacity, species, and climate conditions.

Deep Ocean

Shallow Sea

Tropical Forest

Temperate Forest

Boreal Forest

Grassland

Savanna

Desert

Swamp

Tundra

Polar Ice

Mountain

Volcanic Zone

The Chain of Life

From Primordial Soup
to the Stars

Microbe 4B BP

→

Plant 470M BP

→

Sea Life 530M BP

→

Land Plants 375M BP

→

Reptile 310M BP

→

Mammal 225M BP

→

Civilization Now

Evolution is not guaranteed — every path depends on your choices, the climate you shaped, and the disasters you unleashed.

See It In Action

From Primordial Rock
to the Stars

Real stills from gameplay — every milestone your world can reach.

Primordial World

First Life Emerges

Age of Predators

Life Colonizes Land

Reign of Reptiles

Biodiversity Explosion

Rise of Civilization

Reaching the Stars

Divine Intervention

You Are the Force
That Shapes This World

Intervene directly in your planet's fate. Use your powers wisely — or catastrophically.

Volcanic Eruption Reshapes terrain

Meteor Strike Mass extinction

Ice Age Global freeze

Solar Flare Radiation burst

Earthquake Tectonic shift

Great Flood Rising waters

Seed Forest Rapid growth

Oasis Water source

Raise Mountains New peaks

Mutation Burst Rapid evolution

Powers recharge over time. The planet is always evolving — even when you're not watching.

Spiritual Ancestors

If You Loved These,
You'll Feel Right at Home

God Game

SimEarth

The spiritual grandfather. Planetary atmospheric simulation and geological controls — but modernized, with full biological and civilizational layers SimEarth never reached.

Evolution

Spore

Spore's early cellular and creature stages, but grounded in real ecological principles instead of arcade abstraction. Your creatures evolve through actual selection pressure.

Ecology

Niche / Ecosystem

The ecosystem simulation depth of Niche and Ecosystem — food webs, trophic collapse, species niches — scaled up to a full planet with all geological and technological eras.

Strategy

Civilization

Civ's tech tree satisfaction and civilization-building. But you're not playing one nation — you're the invisible hand guiding the entire planet toward (or away from) its destiny.

Coming to Steam

A Living Planet.
In Your Hands.

Biosphere Simulator is in active development. Wishlist now and be the first to play when it launches.

Wishlist on Steam

Price$9.99

PlatformWindows

Developerindie.io

StatusIn Development

Three Epochs.One Living World.

Every Layer of LifeFully Simulated