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Magma Planet.png
Threat: Inconceivable (Tier 6) Weather
Star types: Fiery Clear.pngGlowingrain.pngSmallmeteorstorm.pngMeteorstorm.png
EPP Required: Status Heat.png Cooling EPP Upgrade
Mini Biomes: None
Secondary Biomes: None
Magma Planet Surface.png

The surface of a magma ocean.
Magma is a primary biome type characterized by vast oceans of deadly lava. Magma planets are an 'inconceivable' threat level, geared toward tier 6 in progression. Not to be confused with the also hot volcanic biome, this biome is primarily lava ocean.
A naturally-generated clump of Ash Pile blocks. Breaking the ash will send the entire pile to the bottom of the magma ocean and send the player standing on top of the ash into Lava.

Magma planets can only be found orbiting fiery (red) star types. Unlike other Tier 6 planet types (volcanic or scorched) magma planets cannot spawn as satellites of Gas Giant planets. Unless players have a Cooling EPP Upgrade equipped they'll take increasing damage while on the surface from deadly heat.

Coming into contact with lava will apply both burning and melting, depleting player health very quickly. An easy method of traveling across the ocean surface is to bring a large supply of water - when water comes into contact with lava it will change the surface of the lava into magmarock which can be safely walked on.

Extreme care should be taken when mining Ash Pile blocks, as they are affected by gravity. Mining these blocks can result in a large pile of ash located on an island to fall to the bottom of the ocean, which will send you straight into a sea of lava should you be standing on said pile.

The lava found on magma planets is infinite, and cannot be drained. All air below surface level is replaced with lava. To build under the ocean and not have lava spawn inside your structure, you must replace the background and foreground with blocks, then remove the foreground blocks and lava will stop spawning.

At night the lava oceans cast a faint glow of light.

Navigation Console

  • This dangerously hot planet is chiefly composed of magma. Remember, your resilient spirit is admirable, but it is not flame retardant.
  • The planet surface is dangerously hot. Few creatures seek out an existence amongst the planet's vast oceans of magma.
  • The beam site is a tiny island isolated in a sea of magma. That you would consider visiting this searingly hot planet speaks volumes of your fortitude.


The surface layer of magma planets are primarily made up of lava, along with scattered small islands made up of obsidian and ash.

Magma planets are mostly covered in lava which spawns endlessly. There's no way to gather all of the lava found in the oceans.

Ores can be found on surface islands, including copper, silver ore, gold, aegisalt, ferozium, violium and solarium available in small quantities. Most ore is accessible beneath the ocean floor.

Primary material Sub materials Geological materials

Music Tracks

Magma surface biomes use their own sets of music tracks for day and night.

  • Jupiter
  • Crystal Exploration 1
  • Arctic Constellation 1
  • Drosera
  • Arctic Exploration 1
  • Arctic Exploration 2
  • Mercury
  • Nomads
  • Psyche
  • Large Magellanic Cloud
  • Accretion Disc
  • Lava Exploration 2
  • Crystal Exploration 2
  • Mira
  • Tranquility Base
  • Arctic Constellation 2
  • Arctic Exploration 2
  • Nomads
  • Psyche
  • Error 0xbfaf000
  • Large Magellanic Cloud
  • Accretion Disc

Magma ocean floor biomes use the Day Tracks plus both Arctic Exploration tracks during the day and the Night Tracks during the night.

  • Epsilon Indi
  • Hymn to the Stars
  • Procyon
  • StellarFormation
  • Vast Immortal Suns
  • Atlas
  • Blue Straggler
  • Cygnus X1
  • Europa
  • Arctic Exploration 1
  • Arctic Exploration 2
  • Haiku
  • M54
  • On the Beach at Night
  • Jupiter
  • Arctic Constellation 1
  • Arctic Constellation 2
  • Mercury
  • Mira
  • Procyon
  • Tranquility Base
  • Psyche
  • Accretion Disc
  • Cygnus X1
  • Eridanus Supervoid
  • Horsehead Nebula
  • Large Magellanic Cloud
  • M54
  • Nomads
  • On the Beach at Night

Sub Biomes

Magma planets do not have any sub biomes which appear, and magma does not appear as a sub biome on any other planet types.

Mini Biomes

There are no mini-biomes found on the surface or underwater on magma planets.


Magma planets deviate somewhat from planetary standards due to being ocean-type planets.

  • Space: Asteroids
  • Atmosphere: Atmosphere
  • Surface: Magma (Primary Biome)
    • Note: For ocean-type planets, the surface layer begins at y=1050 and the ocean surface is at y=1150 regardless of planet size.
  • Subsurface: Magma Ocean Floor
  • Shallow Underground: Tarpit, Mushrooms, Wilderness, Mini Village, Underground 0a, Underground 0b, Underground 1a, or Underground 1b
  • Mid Underground: Luminous Caves, Stone Caves, Bone Caves, Ice Caves, Underground 0c, Underground 1c, Underground 1d, Underground 3a, Underground 3b, Underground 3c, or Underground 3d
  • Deep Underground: Cell Caves, Flesh Caves, Slime Caves, Underground 0d, Underground 5a, Underground 5b, Underground 5c, or Underground 5d
  • Core: Blaststone Core Layer, Magmarock Core Layer, or Obsidian Core Layer


Weather on magma planets is either clear with a chance of luminous rain, or clear with a chance of luminous rain, in addition to small or large meteorites. Each magma planet has one of these two pools of weather, and it will not change. Magma planets without a meteorite shower chance will never have meteor shower weather.

Weather happens for each planet based on the weights given to the weather types (probability is calculated by dividing a single weight by the sum of all weights); the probability for weather types on magma planets is as follows:

Type 1
Clear.png Clear 0.7 (70%)
Glowingrain.png Glowing Rain 0.2 (20%)
Smallmeteorstorm.png Meteor Shower 0.05 (5%)
Meteorstorm.png Large Meteor 0.05 (5%)
Type 2
Clear.png Clear 0.8 (80%)
Glowingrain.png Glowing Rain 0.2 (20%)

Wild Crops

Chilli plants can be found on magma planets. They'll drop produce and have a chance to drop a seed which can be replanted.


In addition to procedurally generated creatures, there are a variety of unique monsters, bugs and critters found in magma biomes. Some of these are also found in other biomes, while others are unique only to magma biomes. While these unique creatures have a chance to appear on magma planets, they will not all appear on each one. In addition to unique creatures, each biome has multiple types of both procedural ground and flying creatures.

Unique monsters each have combat attacks, and they must first be weakened before capture. Once weakened players can attempt to capture using a capture pod. If successful they can then be released to battle alongside and follow the player.

Critters are smaller non-combat unique creatures which are not capturable using capture pods. They can be captured without weakening them first by using a relocator gun. After releasing a critter from the relocator it will stay in the area it was released into.

Bugs are very small unique creatures which can be captured using a bug net, and are then stored inside placeable jars. Bugs which are captured using a relocator will fly after release instead of being kept inside a jar.

Unique Monsters
Fire Rock.gif
Fire Rock
Ore Nibbler.gif
Ore Nibbler
Magma Worm.gif
Magma Worm


There are a number of fish which can only be caught on magma planets using a Fishing Rod. These fish won't be seen swimming in the wild without a fishing lure to attract them. A basic fishing rod will not work on magma planets.

Catching each of these fish will complete their entries in the fishing collection screen.

# Image Name Size Rarity Biome Description Behavior Depth Time
Orange Ashlet.png
Orange Ashlet Medium Common Magma The gray stripes on its body camouflage it against the ridged crust of the magma's surface. Lurk Shallow All
Red Hand.png
Red Hand Medium Common Magma This odd creature is not a single entity, but rather a group of separate symbiotic organisms. Lurk Deep All
Sulphish Small Common Magma Its body creates a constant chemical reaction that propels it forward. Approach All All
Scarlet Swellpurl.png
Scarlet Swellpurl Large Uncommon Magma It doesn't inflate when it's scared, but instead when it's bored. It's always bored. Approach All Day
Lampred Medium Uncommon Magma It has the highest tooth to body ratio of any known fish. Approach Deep Night
Basalt Darter.png
Basalt Darter Small Uncommon Magma Its narrow, angular body fits tightly into cracks in the volcanic rocks where it sleeps. Approach All Day
Scorcheye Small Uncommon Magma This creature's feathery tendrils extend from its hard shell to filter bits of food from the magma as it swims. Approach All Night
Gold Feudibranch.png
Gold Feudibranch Small Rare Magma Its tubular body is entirely soft except for the long, keratinous pincers on its head. Approach All Day
Volcaris Medium Rare Magma A creature that has managed to avoid extinction despite its frail body. Approach Shallow Night
Imperviray Large Rare Magma Its smooth skin is coated with a heat-resistant layer of Impervium. Approach All Day
Seadragon Small Rare Magma This delicate creature uses the tiny, winglike fins on its back to ride gentle currents in flowing magma. Lurk All Night
Magmalodon Large Legendary Magma A near-legendary fish said to be magma brought to life. A true challenge to catch. Approach Deep All

Unique Drops

There are no drops unique on magma planets.


There are no villages or dungeons found on magma planets, they're too harsh to support any type of settlements.

None None


- Terraforming a magma planet will not remove the lava ocean nor turn it into water.