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Planets

Planets have a size and a type. The size controls which layers appear and how big they are; the type controls which biomes may appear in each layer.

Planet sizes

One vertical pixel in this diagram (except the 1px gaps between layers) corresponds to 50 blocks.

small	medium	large
space atmosphere surface subsurface underground1 underground2 underground3 underground4 core	space atmosphere surface subsurface underground1 underground2 underground3 underground4 core	space atmosphere surface subsurface underground1 underground2 underground3 underground4 underground5 underground6 core

Planet types

Layers are populated with regions. A region specifies a choice of biomes, a list of possible major dungeons (microdungeons are per-biome), rules for generating the world geometry, and what liquid may appear.

Every layer has at least one primary region, which is usually dirt or cobblestone. It may also have secondary regions, which tend to contain the interesting biomes, and are generated "on top" in large chunks.

Regions are not an obvious part of the game, so this table mostly focuses on biomes.

barren — A barren and lifeless world suitable for large scale construction.

Threat level: Harmless

surface	Barren Cave distribution: empty · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps
subsurface	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
underground1	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
underground2	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
underground3	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
underground4	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
underground5	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
underground6	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps
core	barrenunderground Cave distribution: empty · Main block distribution: solid · Sub block distribution: largeClumps

garden — A lush planet teeming with life.

Threat level: Harmless

surface

1–1 of these dungeons: naturalcave

Garden
Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface · Sub block distribution: largeClumps
10–20% density of water

moon — A moon. A great source of fuel. No breathable atmosphere.

Threat level: Harmless

surface	Moon Cave distribution: moonSurfaceCaves · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps
subsurface	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
underground1	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
underground2	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
underground3	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
underground4	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
underground5	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
underground6	moonunderground Cave distribution: moonCaves · Main block distribution: solid · Sub block distribution: largeClumps 1–4% density of fuel
core	Moon Core Layer Cave distribution: empty · Main block distribution: solid · Sub block distribution: lowHillsSurface

desert — The majority of the planet's surface is covered in desert with little plant life.

Threat level: Mostly Harmless

surface	0–1 of these dungeons: apextowerblock, floranvillagetower, floranhuntinggrounds, humanbunker, avianvillage, aviantower, aviantomb, apextestchamber, apexresearchlab, glitchvillage, glitchsewer Desert Cave distribution: surfaceCaves · Main block distribution: flatsSurface/lowHillsSurface/ledgesSurface · Sub block distribution: largeClumps Secondary biomes: Oasis Cave distribution: surfaceCaves · Main block distribution: flatsSurface · Sub block distribution: largeClumps 100–100% density of healingliquid Tar Cave distribution: surfaceCaves · Main block distribution: flatsSurface · Sub block distribution: largeClumps 100–100% density of tarliquid
subsurface	Underground1d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid
underground1	Underground1a Underground1b Underground1d Underground1c Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid
underground2	Underground1d Underground1c Underground1b Underground1a Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid
underground3	Underground1d Underground1c Underground1b Underground1a Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid
underground4	Underground1c Underground1d Underground1a Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground5	Underground1c Underground1d Underground1a Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground1c Underground1d Underground1a Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps

forest — Dense forest plant life produces plenty of oxygen.

Threat level: Mostly Harmless

surface	0–1 of these dungeons: glitchsewer, humanbunker, floranhuntinggrounds, floranvillagetower, avianvillage, aviantower, aviantomb, apextowerblock, apextestchamber, apexresearchlab, glitchvillage Forest Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/ledgesSurface · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Spring Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface · Sub block distribution: largeClumps Mushroom Patch Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface · Sub block distribution: largeClumps
underground1	Underground1a Underground1b Underground1d Underground1c Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground2	Underground1d Underground1c Underground1b Underground1a Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground3	Underground1d Underground1c Underground1b Underground1a Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid
underground4	Underground1c Underground1d Underground1a Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground5	Underground1c Underground1d Underground1a Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground1c Underground1d Underground1a Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Wilderness Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Tarpit Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of tarliquid Mini Village Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Mushrooms Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps

ocean — The planet's surface is covered in ocean.

Threat level: Moderate

surface	Tropical Ocean Cave distribution: empty · Main block distribution: floatingIslandsSurface · Sub block distribution: largeClumps Ocean of water
subsurface	Tropical Ocean Floor Cave distribution: empty · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps Ocean of water
underground1	Underground1c Underground3c Underground3b Underground3a Underground1a Underground1d Underground1b Underground3d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground2	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water
underground3	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground4	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water
underground5	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps

savannah — An arid landscape prone to dust storms.

Threat level: Moderate

surface	0–1 of these dungeons: aviantower, aviantomb, apextowerblock, apextestchamber, apexresearchlab, glitchvillage, floranvillagetower, glitchsewer, floranhuntinggrounds, humanbunker, avianvillage Savannah Cave distribution: surfaceCaves · Main block distribution: flatsSurface/lowHillsSurface/canyonsSurface · Sub block distribution: largeClumps 10–20% density of water or tarliquid Secondary biomes: Colourful Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface · Sub block distribution: largeClumps Bones Cave distribution: surfaceCaves · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps
underground1	Underground1c Underground3c Underground3b Underground3a Underground1a Underground1d Underground1b Underground3d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water
underground2	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water
underground3	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground4	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground5	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps

snow — The majority of the planet is covered in snow, with little plant life.

Threat level: Moderate

surface	0–1 of these dungeons: floranhuntinggrounds, humanbunker, avianvillage, aviantower, aviantomb, apextowerblock, apextestchamber, apexresearchlab, glitchvillage, glitchsewer, floranvillagetower Snow Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/medHillsSurface/ledgesSurface · Sub block distribution: largeClumps Secondary biomes: Bioluminescence Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface · Sub block distribution: largeClumps Alpine Cave distribution: surfaceCaves · Main block distribution: mountainsSurface · Sub block distribution: largeClumps
underground1	Underground1c Underground3c Underground3b Underground3a Underground1a Underground1d Underground1b Underground3d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water
underground2	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground3	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground4	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground5	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Stone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of water Luminous Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–5% density of poison Bone Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Ice Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps

alien — Planet is covered in alien plant life. Non breathable atmosphere. High levels of radiation.

Threat level: Risky

surface	0–1 of these dungeons: glitchsewer, apexresearchlab, apextestchamber, aviantomb, aviantower, humanbunker, floranhuntinggrounds, scifidungeon, glitchcastle, humanprison, aviantemple, avianairship, floranhell Alien Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/ledgesSurface · Sub block distribution: largeClumps 10–20% density of alienjuice Secondary biomes: Eyepatch Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface · Sub block distribution: largeClumps
underground1	Underground1c Underground3c Underground3b Underground3a Underground1a Underground1d Underground1b Underground3d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid
underground2	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison
underground3	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground4	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground5	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison
underground6	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison

jungle — Warm and wet climate sustains tropical plant life. High levels of radiation.

Threat level: Risky

surface	0–1 of these dungeons: humanbunker, aviantomb, apextestchamber, apexresearchlab, glitchsewer, scifidungeon, aviantower, glitchcastle, humanprison, aviantemple, avianairship, floranhell, floranhuntinggrounds Jungle Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/medHillsSurface/ledgesSurface/giantLedgesSurface · Sub block distribution: largeClumps 10–20% density of water or poison Secondary biomes: Giantflowers Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/medHillsSurface · Sub block distribution: largeClumps
underground1	Underground1c Underground3c Underground3b Underground3a Underground1a Underground1d Underground1b Underground3d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground2	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid
underground3	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground4	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground5	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison

toxic — Planet is covered in poisonous oceans. High levels of radiation. Non breathable atmosphere.

Threat level: Risky

surface	Toxic Cave distribution: acidPoolCaves · Main block distribution: flatDeepIslandsSurface · Sub block distribution: largeClumps Ocean of poison
subsurface	Toxic Ocean Floor Cave distribution: empty · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps Ocean of poison
underground1	Underground1c Underground3c Underground3b Underground3a Underground1a Underground1d Underground1b Underground3d Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid
underground2	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison
underground3	Underground3c Underground3a Underground1a Underground3d Underground1d Underground3b Underground1c Underground1b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 10–20% density of water Secondary biomes: Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison
underground4	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid
underground5	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps
underground6	Underground3a Underground3d Underground3c Underground3b Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 0–10% density of water Secondary biomes: Cell Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of poison Flesh Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps Slime Caves Cave distribution: normalCaves · Main block distribution: solid · Sub block distribution: largeClumps 5–10% density of slimeliquid

arctic — Planet is covered in frigid oceans. Temp is dangerously low.

Threat level: Dangerous

surface	Arctic Cave distribution: empty · Main block distribution: floatingIslandsSurface · Sub block distribution: largeClumps Ocean of water
subsurface	Arctic Ocean Floor Cave distribution: empty · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps Ocean of water

tundra — A vast expanse of ice and snow. Temp dangerously low.

Threat level: Dangerous

surface

0–1 of these dungeons: scifidungeon, humanbunker, aviantower, aviantomb, apextestchamber, apexresearchlab, glitchsewer, glitchcastle, floranhuntinggrounds, floranhell, avianairship, aviantemple, humanprison

Tundra
Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/medHillsSurface/ledgesSurface/canyonsSurface/mountainsSurface · Sub block distribution: largeClumps

Secondary biomes: Ice
Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/ledgesSurface/canyonsSurface · Sub block distribution: largeClumps

magma — Planet surface is covered in magma. Non breathable atmosphere. Temp dangerously high.

Threat level: Extreme

surface	Magma Cave distribution: empty · Main block distribution: floatingIslandsSurface · Sub block distribution: largeClumps Ocean of lava
subsurface	Magma Ocean Floor Cave distribution: empty · Main block distribution: flatsSurface/lowHillsSurface · Sub block distribution: largeClumps Ocean of lava

scorched — A dead planet cooked by its sun. Non breathable atmosphere. Temp dangerously high.

Threat level: Extreme

surface

0–1 of these dungeons: floranhuntinggrounds, aviantomb, apextestchamber, glitchsewer, apexresearchlab, floranhell, avianairship, aviantemple, humanprison, glitchcastle, scifidungeon, humanbunker, aviantower

Scorched
Cave distribution: surfaceCaves · Main block distribution: spikesSurface/mesasSurface/canyonsSurface/ledgesSurface/giantLedgesSurface · Sub block distribution: largeClumps
10–20% density of tarliquid

Secondary biomes: Rust
Cave distribution: surfaceCaves · Main block distribution: medHillsSurface/ledgesSurface · Sub block distribution: largeClumps

volcanic — Unforgiving volcanic terrain. Non breathable atmosphere. Temp dangerously high.

Threat level: Extreme

surface

0–1 of these dungeons: humanprison, aviantower, aviantemple, humanbunker, floranhuntinggrounds, glitchsewer, apexresearchlab, apextestchamber, aviantomb, avianairship, floranhell, scifidungeon, glitchcastle

Volcanic
Cave distribution: surfaceCaves · Main block distribution: lowHillsSurface/medHillsSurface/ledgesSurface/giantLedgesSurface/canyonsSurface/mountainsSurface · Sub block distribution: largeClumps
10–20% density of lava

Secondary biomes: Crystalline
Cave distribution: surfaceCaves · Main block distribution: medHillsSurface/ledgesSurface · Sub block distribution: largeClumps