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This article is considered accurate for the current version (Launch Update).

Biomes are regions in Oxygen Not Included. There are 11 different biomes in the game. Each contains different resources, creatures, and plants, and are mostly separated by veins of Abyssalite. Although each biome has a color shading applied to it that stays after the biome is mined out, there are no special properties beyond the contents of the biomes (so, for example, the Frozen biome does not cool itself, only starting out cold and cooling through Wheezeworts, which can be removed).

Each Asteroid Type contains 8 Biomes, with the exception of Rime Asteroid which contains 10 Biomes.

Biomes Contents[edit | edit source]

Biome Default Temperature Range Metal Rock Other Solids Liquid Gases Plants and Critters Border
Temperate Room (19.85 °C - 24.85 °C) Copper Ore Sandstone AlgaeCoalDirtFertilizerOxyliteSand Water OxygenCarbon Dioxide HatchShinebug
Buried MuckrootMealwood

Bristle BlossomBluff Briar

GraniteIgneous Rock
Forest Room (19.85 °C - 24.85 °C) Aluminum Ore Igneous Rock DirtOxylitePhosphorite Water OxygenCarbon Dioxide ShinebugPip
Forest MuckrootMealwoodArbor TreeOxyfernMirth Leaf
GraniteIgneous Rock
Swamp 30 °C Gold Amalgam Sedimentary Rock SlimeAlgaeClayOxyliteCool Steam VentNatural Gas Geyser Polluted Water Polluted OxygenCarbon Dioxide PuftPacuThimble ReedDusk Cap AbyssaliteNeutronium
Caustic 40 °C Iron Ore Igneous rock PhosphoriteAlgaeBleach StoneCoalOxyliteCool Steam VentNatural Gas GeyserChlorine Gas Vent None ChlorineHydrogen MorbDreckoPincha PepperBalm Lily AbyssaliteNeutronium
Frozen -30 °C - -40 °C Wolframite Granite IcePolluted IceSnow None OxygenCarbon Dioxide WheezewortSleet Wheat AbyssaliteNeutronium
Rust -10 °C Iron Ore Mafic Rock Rust, Salt None Carbon Dioxide Nosh Sprout, Dasha Saltvine NeutroniumAbyssalite
Tide Pool None Sedimentary RockGranite Salt, Sand Salt Water, Brine HydrogenCarbon Dioxide Pokeshell Waterweed NeutroniumAbyssalite
Oil Iron Ore Igneous Rock
DiamondObsidianFossilOil Reservoir Crude Oil Carbon Dioxide Slickster AbyssaliteNeutronium
Volcanic None Obsidian NeutroniumAbyssalite Magma None None Neutronium
Space IronCopper Gold Mafic Rock RegolithGraniteIgneous rock None None Shove Vole No-Go Zone

The location of each Biome varies depending on the Asteroid Type. See corresponding Asteroid Type for more details.

The above table shows only what is primarily generated in these biomes; there are some exceptions:

Biome Descriptions[edit | edit source]

Temperate Biome

Temperate Biome[edit | edit source]

Main article: Temperate Biome

The Temperate Biome is the place where Duplicants start. It contains clean Water, Dirt, Sandstone, Sand, Coal, Algae, and Copper (which provides a small decor boost). The Muckroot, Mealwood and Bristle Blossom plants growing naturally here will provide food until other Food options are researched. The player is guaranteed to start with at least five accessible tiles of Oxylite, which should produce sufficient Oxygen for the Duplicants to survive until Oxygen generation structures have been researched. Algae found here will last for about 20 or more cycles after that. Shinebugs and Hatches are found only in this biome. The Temperate biome is bordered by a mixture of Granite and Obsidian, and is located in the center of the map, surrounded by the other biomes.

Forest Biome[edit | edit source]

Main article: Forest Biome

The Forest Biome is an alternative start location. It contains Igneous Rock, Aluminum Ore, Dirt and limited Water. The Hexalent, Mealwood, Arbor Trees can be found here. Oxyfern provides Oxygen in early game. Pips live in this biome.

Swamp Biome[edit | edit source]

Main article: Swamp Biome

Swamps are warmer and have cavities full of Polluted Oxygen, often under high pressure. Pools of Polluted Water and dug up Slime will add even more Polluted Oxygen. Players can find more Algae here, useful if its still needed for Oxygen generation. The Slime can be converted to Algae as well. The primary rock is Sedimentary Rock, which can be mined quickly due to its low hardness. The Gold Amalgam found here is the most heat-resistant Metal Ore. Dusk Caps and Thimble Reed grow here, the latter of which is crucial for the production of Clothes.

Mining swamps can take a long time, due to the slime, which contains Slimelung disease, that harms duplicant productivity. Pufts and Pacus can also be found in this biome.

Caustic Biome[edit | edit source]

Main article: Caustic Biome

This biome is even warmer than the Swamp Biome, and here the player can find Pincha Pepper plants that produce Pincha Peppernut for the Gas Range, as well as Balm Lilies which can be used to make Medical Packs. The Chlorine and Hydrogen gases in the cavities here are unbreathable. The Bleach Stone found here is useful to keep the Duplicants happy with a Hand Sanitizer, and Phosphorite is used as a fertilizer for Pincha Pepper. Caustic biomes often have large veins of Coal, Igneous Rock, Algae, and Iron Ore (which has no special properties compared to other Metal Ores). Morbs can be found here as well. In one caustic biome, there will be either a single Chlorine Geyser, the only renewable source of Chlorine, or a second Natural Gas Geyser. Dreckos are often found in this biome near Balm Lily and Pincha Peppernut plants, they can be alternative source of Reed Fiber.

Frozen Biome[edit | edit source]

Frozen Biome
Main article: Frozen Biome

In this biome, Hypothermia can struck Duplicants without Warm Sweaters (which can be made in a Textile Factory). The temperature ranges from -20 to -40 °C. It contains large amounts of liquifiable Ice, Polluted Ice, and Snow, as well as veins of Granite and Wolframite (both notable for their excellent Heat transfer abilities). For gases, there is Carbon Dioxide and some Oxygen. Players can find Sleet Wheat and Wheezewort plants here. Frozen Biomes are not generated directly next to starting biomes.

Rust Biome[edit | edit source]

Main article: Rust Biome

Rust Biome contains Rust, Salt, Mafic Rock, Iron Ore. Nosh Sprout and Dasha Saltvine grow here.

Tide Pool Biome[edit | edit source]

Main article: Tide Pool Biome

Tide Pool Biome contains Salt Water, Brine, Salt, Sand, Sedimentary Rock, Granite. Waterweed grows here. Pokeshell lives in Salt Water pools.

Oil Biome[edit | edit source]

Main article: Oil Biome

It is located right above the volcanic biome. The temperature is ~80 °C (on the top) and up to 380 °C (on the bottom). It contains Crude Oil, Oil Reservoirs, veins of Diamond, Granite, Obsidian and Iron Ore and pockets of Natural Gas and Carbon Dioxide. It is inhabited by Slicksters.

If the asteroid has Irregular Oil trait during world generation, the Oil Biome may appear anywhere in the map.

Volcanic Biome[edit | edit source]

Main article: Volcanic Biome

Volcanic biome appears at the very bottom of the map. It only contains liquid Magma (about 1600 °C), Obsidian and Neutronium which can't be destroyed.

Space Biome[edit | edit source]

Space Biome
Main article: Space Biome

The surface of asteroid. It contains Mafic Rock, Regolith and Granite in the upper layers, and Igneous Rock can be found in the lower layers.

Meteor Showers can randomly happen and bring refined Iron, Copper, and Gold in item form and Regolith in block form.

Gases are sucked into the vacuum of space through the open background, and in the absence of gases heat can not dissipate from materials and objects. Adding Drywalls helps to construct rooms that can hold air.

Barren Biome[edit | edit source]

Main article: Barren Biome

This biome is filled with generic rocks, and lacks any features.

Electrum Biome[edit | edit source]

Electrum Biome is no longer used in current game as of Launch Update.

Electrum biome appeared on the top of the map in the first Helicona preset and in the second preset, it appeared as world border. It contained huge pockets of Electrum and Vacuum. In Helicona 2 preset there occurs Iron Ore and Copper Ore is not completely surrounded by Neutronium.

Gallery[edit | edit source]