All 29 Biomes and Their Resources in Oxygen Not Included

Oxygen Not Included is a survival game where you dig into asteroids and keep a colony of workers called Duplicants alive. Each asteroid is split into biomes, which are regions with their own temperature, air, materials, plants, and creatures. Where you dig decides what your colony can use and what it has to survive.

Barren

A life-free mineral biome with iron, coal, granite, and igneous rock.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

-

Main Solid Materials

Iron, Iron Ore, Granite, Igneous Rock, Obsidian, Coal, Abyssalite

Native Plants

-

Native Critters

-

Notable Hazards

No native life in the standard biome; hot core variants can reach 40 to 50 °C.

Forest

A temperate, plant-rich biome with aluminum ore and forest crops.

Typical Temperature

20 to 25 °C

Main Gases and Liquids

Carbon dioxide, oxygen, water

Main Solid Materials

Aluminum Ore, Igneous Rock, Dirt, Oxylite, Phosphorite

Native Plants

Mealwood, Hexalent, Arbor Tree, Mirth Leaf, Oxyfern

Native Critters

Shine Bug, Pip

Notable Hazards

Hot and cold worldgen variants can shift the local temperature substantially.

Tundra

A frozen biome with ice, snow, and rare Wolframite.

Typical Temperature

-46 to -33 °C

Main Gases and Liquids

Carbon dioxide, oxygen

Main Solid Materials

Wolframite, Ice, Snow, Polluted Ice, Granite

Native Plants

Sleet Wheat, Wheezewort

Native Critters

-

Notable Hazards

Severe cold can freeze liquids and cause frostbite; some variants are colder still.

Jungle

A hot, oxygen-poor biome with chlorine, hydrogen, and Dreckos.

Typical Temperature

40 to 50 °C

Main Gases and Liquids

Hydrogen gas, chlorine gas

Main Solid Materials

Iron Ore, Igneous Rock, Sandstone, Algae, Bleach Stone, Coal, Sand

Native Plants

Mirth Leaf, Pincha Pepperplant, Balm Lily

Native Critters

Drecko, Morb

Notable Hazards

Very hot, chlorine-rich air has no breathable oxygen; Duplicants need oxygen support.

Magma

An extremely hot core biome dominated by magma and obsidian.

Typical Temperature

1227 to 1527 °C

Main Gases and Liquids

Magma

Main Solid Materials

Obsidian, Abyssalite

Native Plants

-

Native Critters

-

Notable Hazards

Extreme heat and liquid magma; vent and large-cave variants are cooler than the core.

Marsh

A warm, polluted biome rich in Slime, polluted water, and marsh plants.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Carbon dioxide, polluted oxygen, polluted water

Main Solid Materials

Slime, Clay, Algae, Sand, Sedimentary Rock, Igneous Rock, Gold Amalgam

Native Plants

Thimble Reed, Buddy Bud, Dusk Cap

Native Critters

Pacu, Puft

Notable Hazards

Slimelung can spread from infected Slime; polluted oxygen is common.

Ocean

A warm biome with large salt-water pools, sand, and Pokeshells.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Salt water, carbon dioxide; brine in some variants

Main Solid Materials

Salt, Sand, Sedimentary Rock, Fossil, Bleach Stone

Native Plants

Waterweed, Pincha Pepperplant

Native Critters

Pokeshell

Notable Hazards

Deep salt-water pools can create drowning risk and make travel difficult.

Oily

A hot biome with Crude Oil, Lead, Slicksters, and Sporechids.

Typical Temperature

50 to 100 °C

Main Gases and Liquids

Crude oil, carbon dioxide

Main Solid Materials

Lead, Iron Ore, Fossil, Diamond, Granite, Igneous Rock

Native Plants

Jumping Joya, Sporechid

Native Critters

Slickster

Notable Hazards

Heat can scald Duplicants; Sporechids release Zombie Spores.

Rust

A cold, rust-filled biome with Nosh Sprouts and Dasha Saltvines.

Typical Temperature

-16 to 7 °C

Main Gases and Liquids

Carbon dioxide, chlorine gas, ethanol; sour gas and salt water in variants

Main Solid Materials

Rust, Iron Ore, Bleach Stone, Salt, Sulfur, Mafic Rock, Obsidian

Native Plants

Nosh Sprout, Dasha Saltvine, Wheezewort

Native Critters

Drecko, Squeaky Puft (variant-dependent)

Notable Hazards

Cold temperatures can freeze liquids; temperature varies across biome variants.

Sandstone

A common early-game biome with Copper Ore, Sandstone, Coal, and food plants.

Typical Temperature

20 to 25 °C

Main Gases and Liquids

Carbon dioxide, oxygen, water

Main Solid Materials

Copper Ore, Sandstone, Granite, Igneous Rock, Coal, Algae, Dirt, Sand

Native Plants

Mealwood, Bristle Blossom, Bluff Briar

Native Critters

Hatch, Shine Bug

Notable Hazards

Generally temperate; hot desert and cold start variants also occur.

Space

The vacuum biome beyond the asteroid surface, with Regolith and occasional Shove Voles.

Typical Temperature

-73 to -46 °C

Main Gases and Liquids

Vacuum; exposed gases and liquids are lost

Main Solid Materials

Regolith, Granite, Igneous Rock, Mafic Rock, Rust

Native Plants

-

Native Critters

Shove Vole (surface variants)

Notable Hazards

Vacuum prevents breathing and removes exposed gases and liquids; meteor showers can strike the surface.

Aquatic

A deep-water biome on the Water Asteroid with Graphite and Lime.

Typical Temperature

25 to 50 °C (varies by depth)

Main Gases and Liquids

Water, oxygen, carbon dioxide

Main Solid Materials

Graphite, Lime, Igneous Rock, Fossil

Native Plants

-

Native Critters

-

Notable Hazards

Deep water makes traversal difficult and may require Atmo Suits.

Metallic

A temperate biome rich in metal ores, including Gold Amalgam.

Typical Temperature

20 to 25 °C

Main Gases and Liquids

-

Main Solid Materials

Cobalt Ore, Gold Amalgam, Aluminum Ore, Igneous Rock, Coal, Dirt, Oxylite

Native Plants

-

Native Critters

-

Notable Hazards

Colder variants also occur.

Moo

A frigid biome with Gas Grass, Gassy Moos, and chlorine.

Typical Temperature

-46 to -33 °C

Main Gases and Liquids

Liquid chlorine, natural gas

Main Solid Materials

Bleach Stone, Regolith, Solid Carbon Dioxide, Solid Chlorine, Granite, Igneous Rock

Native Plants

Gas Grass

Native Critters

Gassy Moo

Notable Hazards

Extreme cold can freeze chlorine; the biome has little or no breathable oxygen.

Niobium

An extremely hot biome that contains Niobium veins encased in Obsidian.

Typical Temperature

1227 to 1527 °C

Main Gases and Liquids

-

Main Solid Materials

Niobium, Obsidian, Abyssalite

Native Plants

-

Native Critters

-

Notable Hazards

Extreme heat makes access dangerous without strong insulation and cooling.

Radioactive

A cold radioactive biome with Uranium Ore, Beetas, and specialized plants.

Typical Temperature

-46 to -33 °C

Main Gases and Liquids

Carbon dioxide; chlorine gas and liquid chlorine in some variants

Main Solid Materials

Uranium Ore, Wolframite, Ice, Snow, Sulfur, Bleach Stone, Solid Carbon Dioxide, Solid Chlorine

Native Plants

Wheezewort, Saturn Critter Trap, Tranquil Toes

Native Critters

Shine Bug, Beeta

Notable Hazards

Radiation and severe cold; Beetas can sting Duplicants.

Regolith

A surface biome dominated by Regolith and inhabited by Shove Voles.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Oxygen in some variants; often sparse

Main Solid Materials

Regolith, Iron Ore, Mafic Rock, Rust, Ice, Crushed Ice

Native Plants

Wheezewort

Native Critters

Shove Vole

Notable Hazards

Shove Voles can consume stored food and burrow through the surface; cold variants occur.

Swampy

A polluted but germ-free biome with Mud, Bog Buckets, and Plug Slugs.

Typical Temperature

20 to 25 °C

Main Gases and Liquids

Polluted oxygen, polluted water, carbon dioxide

Main Solid Materials

Cobalt Ore, Mud, Polluted Mud, Polluted Dirt, Sedimentary Rock, Fossil, Phosphorite

Native Plants

Swamp Chard, Bog Bucket, Mellow Mallow

Native Critters

Pacu, Plug Slug (juvenile Plug Sluglets)

Notable Hazards

Polluted materials can off-gas and natural tiles can conceal polluted-water pools; this biome has no germs in its standard worldgen.

Wasteland

A temperate biome with Grubfruit plants, Divergent critters, and varied minerals.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Oxygen

Main Solid Materials

Copper Ore, Igneous Rock, Mafic Rock, Sandstone, Sucrose, Sulfur, Oxylite, Sand

Native Plants

Bliss Burst, Spindly Grubfruit Plant

Native Critters

Sweetle, Grubgrub (Divergent variants)

Notable Hazards

Some variants are cold; Sweetles and Grubgrubs can consume plant resources.

Cool Pool

A frigid biome with Ethanol pools, Iron Ore, and Plume Squash.

Typical Temperature

-46 to -33 °C

Main Gases and Liquids

Ethanol, oxygen, carbon dioxide

Main Solid Materials

Iron Ore, Ice, Igneous Rock, Sucrose

Native Plants

Plume Squash Plant

Native Critters

Bammoth

Notable Hazards

Frigid pools and cold air can freeze exposed liquids and cause frostbite.

Ice Cave

A cold, ice-rich biome that serves as a starting area on Ceres.

Typical Temperature

-33 to -16 °C

Main Gases and Liquids

Oxygen, carbon dioxide

Main Solid Materials

Ice, Snow, Cinnabar Ore, Oxylite, Phosphorite, Dirt, Igneous Rock

Native Plants

Pikeapple Bush, Sherberry Plant, Idylla Flower, Alveo Vera

Native Critters

Flox

Notable Hazards

Cold caves can freeze liquids; deeper Snowbanks variants are colder than the starting range.

Nectar

An extremely cold biome containing Nectar and Solid Mercury.

Typical Temperature

-73 to -46 °C

Main Gases and Liquids

Oxygen; Nectar deposits

Main Solid Materials

Solid Mercury, Ice, Snow, Phosphorite, Abyssalite

Native Plants

Idylla Flower, Bonbon Tree

Native Critters

Shine Bug, Spigot Seal

Notable Hazards

Extreme cold can cause frostbite and freeze exposed liquids.

Garden

A warm, vegetated biome with Peat, Sweatcorn, Snactus, and prehistoric wildlife.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Oxygen, water, carbon dioxide

Main Solid Materials

Nickel Ore, Shale, Peat, Dirt, Algae, Oxylite, Fertilizer

Native Plants

Ring Rosebush, Sweatcorn Stalk, Snactus, Ovagro Node, Mimika Bud

Native Critters

Mimika, Lumb

Notable Hazards

-

Feather

A cold chlorine biome with Megafrond plants and prehistoric wildlife.

Typical Temperature

-33 to -16 °C

Main Gases and Liquids

Chlorine gas, liquid chlorine, oxygen

Main Solid Materials

Iron Ore, Bleach Stone, Brine Ice, Phosphorite, Granite, Igneous Rock

Native Plants

Dew Dripper, Wheezewort, Megafrond

Native Critters

Dartle, Rhex

Notable Hazards

Cold, chlorine-rich air requires protection and can be unsafe to breathe.

Wetlands

A warm polluted-water biome with Lura Plants, Seakomb, and Jawbos.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Polluted water, oxygen

Main Solid Materials

Gold Amalgam, Igneous Rock, Obsidian, Algae, Dirt, Sand, Polluted Dirt

Native Plants

Lura Plant, Seakomb

Native Critters

Pacu, Gnit, Jawbo

Notable Hazards

Polluted-water pools can create swimming and drowning risks.

Abyss

A hot deep-water biome with Polluted Brine, Galena, and Glo Squids.

Typical Temperature

50 to 75 °C

Main Gases and Liquids

Polluted brine

Main Solid Materials

Galena, Basalt, Coal, Diamond, Abyssalite

Native Plants

Bulbloom, Tublia, Pinpoket

Native Critters

Glo Squid

Notable Hazards

Deep, hot polluted brine and vent activity can make access hazardous; hard Basalt can slow digging.

Beach

A warm shoreline biome with Salt, Sand, shoreline plants, and aquatic critters.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Water, oxygen, carbon dioxide

Main Solid Materials

Zinc Ore, Siltstone, Sandstone, Salt, Sand, Sulfur, Algae, Oxylite

Native Plants

Gum Palm, Mussel Sprout, Sodicane, Husha Cups

Native Critters

Pokeshell, Slogo, Blowter

Notable Hazards

Water-filled areas can create drowning risk.

Kelp Forest

A submerged biome with Tower Kelp, polluted water, Kelpoles, and Orehulls.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Polluted water, polluted oxygen

Main Solid Materials

Iron Ore, Granite, Polluted Mud, Dirt, Abyssalite

Native Plants

Buddy Bud, Thimble Reed, Tower Kelp

Native Critters

Kelpole, Orehull

Notable Hazards

Polluted water and polluted oxygen are common; submerged routes can create drowning risks.

Reef

A warm salt-water biome with coral, Clampum, and reef wildlife.

Typical Temperature

25 to 40 °C

Main Gases and Liquids

Salt water, oxygen

Main Solid Materials

Zinc Ore, Coquina, Corallium, Phosphorite, Sand, Abyssalite

Native Plants

Clampum, Petta Pouf, Flue Coral, Starnacle, Waterweed

Native Critters

Sanishell, Tropical Pacu, Beakon, Blowter, Seaquine

Notable Hazards

Broad salt-water areas leave little dry ground and can create drowning risks.

What Biomes Are and How They Work

A biome is a region of an asteroid, and it doesn't follow any special rules of its own. What it does for your colony comes from what's inside: the materials you can mine, the plants and creatures that live there, and the temperature and air. The Tundra is a good example. It starts out cold, and the Wheezeworts growing there help keep it that way.

Where Biomes Appear on Each World

Space forms the surface of every asteroid, and meteor showers bring in materials. Below that, the rest of the world is made of other biomes, and which ones you find depends on the asteroid you're on. Some biomes belong to a single world. Aquatic appears only on the Water Asteroid, Moo only on the Moo Asteroid, Niobium only on the Superconductive Asteroid, and Regolith only on the Regolith Asteroid.

Other biomes depend on how a world is generated. Magma appears at the bottom of some asteroids or with certain World Traits, and the Oily Biome can show up on any world with the Irregular Oil World Trait.

Spaced Out! is what made it possible to move between worlds. You can send missions to other planetoids and move resources between your bases.

Which Biomes Matter Most

Which biomes matter most depends on what your colony needs, but a few stand out for what they hold. The Oily Biome is where you find crude oil, and its Slicksters turn carbon dioxide into oil. The Tundra holds Sleet Wheat, a food, along with Wolframite.

The Radioactive Biome is home to Beetas, which turn uranium ore into enriched uranium. Graphite is found in the Aquatic Biome, so that's where to go if you need it.

Dangerous Biomes and How to Handle Them

Temperature is the first thing to plan for. The Oily Biome can scald Duplicants, and its Sporechids release Zombie Spores, a germ that makes Duplicants sick. The Radioactive Biome is cold enough to freeze carbon dioxide and chlorine, and it can give Duplicants frostbite. The Tundra has an Anti Entropy Thermo-Nullifier, which takes heat out of an area while using up hydrogen.

Air is the other big concern. In Space, gases and liquids are lost to the vacuum, and heat can't escape without gas to carry it away. Drywall is a back wall that stops gas and liquid from being lost to space, so you can build airtight rooms on the surface.

Other biomes have air you can't rely on. Moo has no naturally breathable gas, the Marsh's oxygen is polluted, and the Jungle's air is made of chlorine and hydrogen. Reaching the deeper parts of the Aquatic Biome takes Atmo Suits, so have them ready before you go down.

Biomes Added by the Planet Packs

The Frosty Planet Pack adds Ceres, a starting asteroid, along with the Ice Cave, Cool Pool, and Nectar biomes. Every Ceres start begins in the Ice Cave, a cold area of snow, ice, and oxylite.

Cool Pool holds iron ore, ice and sucrose around pools of ethanol, and it's home to Bammoths and Plume Squash. Nectar is frigid and home to Spigot Seals and Bonbon Trees, and its Nectar material can become plastic.

The Prehistoric Planet Pack adds Relica, and every Relica start begins in Garden. Garden is a vine-filled biome with water, dirt, peat, algae and nickel ore, plus Ovagro Vines, Sweatcorn, and Mimika Buds and Mimikas. It's also warmer than most starting biomes.

Feather is a cold area of chlorine-filled caverns with Rhexes, Dartles, and Megafronds, and it has large deposits of iron ore. Wetlands is made of polluted water lakes with Pacus and gold amalgam, and it's home to Jawbo, Gnits, Luras that produce amber, and Seakomb.

The Aquatic Planet Pack adds Abyss, Beach, Kelp Forest, and Reef. It also adds Marinea, a new starting world, and its flooded areas hold marine critters and plants that supply food, building materials and oxygen.

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