Agent Skill
2/7/2026

latitude-biome-authority

Authoritative list of all vanilla Minecraft biomes and the latitude bands they are allowed to generate in for the Latitude (Globe) mod. This skill forbids guessing, omission, or reassignment of biomes and serves as the single source of truth for biome inclusion and climate eligibility.

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SKILL.md

Namelatitude-biome-authority
DescriptionAuthoritative list of all vanilla Minecraft biomes and the latitude bands they are allowed to generate in for the Latitude (Globe) mod. This skill forbids guessing, omission, or reassignment of biomes and serves as the single source of truth for biome inclusion and climate eligibility.

name: latitude-biome-authority description: > Authoritative list of all vanilla Minecraft biomes and the latitude bands they are allowed to generate in for the Latitude (Globe) mod. This skill forbids guessing, omission, or reassignment of biomes and serves as the single source of truth for biome inclusion and climate eligibility.


Latitude Biome Authority — Vanilla Minecraft (Java 1.21.11)

Generated: 2026-01-31

RULES (MANDATORY)

  • Every vanilla biome listed here must exist in at least one valid generation path.
  • Windsurf must never invent, remove, or reassign biomes outside this table.
  • If a biome is missing in-world, the cause is tag omission or logic error, not intentional rarity.
  • Latitude bands are authoritative; variants and overlays are secondary.
  • Rarity is a design knob, not a probability guarantee.
  • Caves, rivers, oceans, Nether, and End biomes are not latitude-decided unless explicitly stated.
  • Mountain / peak biomes are overlays and may restrict placement but must not override latitude truth.

Latitude Bands

  • Equator — hottest + wettest
  • Tropics — hot + wet-ish
  • Arid — hot + dry
  • Temperate — mild
  • Subpolar — cold
  • Polar — coldest

Overlay: Mountain / Peaks
Only allowed when “mountainness” is true (height, slope, or climate params), regardless of latitude.


Plains / general land

BiomeBand(s)RarityNotes
PlainsTemperateCommonCore mid-latitude flatland.
Sunflower PlainsTemperateRareRare plains variant.
SavannaArid ↔ TropicsUncommonWarm transition biome.
Savanna PlateauArid / TropicsUncommonHighland warm biome.
Snowy PlainsSubpolarCommonMain cold flatland.
Ice SpikesPolarVery rareCold extreme.
Mushroom FieldsAny (special)Very rareSpecial-case island biome; not latitude-driven.

Forests / woodlands

BiomeBand(s)RarityNotes
ForestTemperateCommon
Birch ForestTemperateCommon
Flower ForestTemperateRareDiscovery biome.
Dark ForestTemperateUncommonDense canopy.
Old Growth Birch ForestTemperateRareLarge birch variant.
TaigaTemperate-high → Subpolar-lowCommonKey transition biome.
Old Growth Pine TaigaTemperate-high → SubpolarUncommon
Old Growth Spruce TaigaSubpolarUncommon
Snowy TaigaSubpolarUncommon
Pale GardenTemperate (rare)Very rareDark-forest-adjacent oddity.

Jungle family (warm + wet)

BiomeBand(s)RarityNotes
JungleEquator / TropicsUncommonDense near equator.
Bamboo JungleEquator / TropicsRare
Sparse JungleTropicsUncommonTransition biome.
Mangrove SwampEquator / TropicsRareMust not appear in cool bands.

Swamps / wetlands

BiomeBand(s)RarityNotes
SwampTropics ↔ Temperate-lowUncommonWarm temperate transition.
Mangrove SwampEquator / TropicsRareWarm-only swamp.

Sandy / dry / badlands

BiomeBand(s)RarityNotes
DesertAridUncommon
BadlandsAridRare
Wooded BadlandsAridRare
Eroded BadlandsAridVery rareExtreme terrain.

Mountains / highlands (overlay-only)

BiomeBand(s)RarityNotes
MeadowTemperate (overlay)Uncommon
GroveTemperate-high / Subpolar (overlay)UncommonMust be explicitly preserved.
Cherry GroveTemperate (overlay)Rare
Windswept HillsTemperate (overlay)Uncommon
Windswept ForestTemperate (overlay)Uncommon
Windswept Gravelly HillsTemperate (overlay)Rare
Windswept SavannaArid / Tropics (overlay)Uncommon
Stony PeaksArid / Tropics / Temperate (overlay)Rare
Jagged PeaksSubpolar / Polar (overlay)Rare
Frozen PeaksSubpolar / Polar (overlay)Rare
Snowy SlopesSubpolar / Polar (overlay)Uncommon
Stony ShoreAny (adjacency overlay)UncommonMountains touching ocean only.

Caves (not latitude-driven)

BiomeBand(s)RarityNotes
Lush CavesAnyUncommon
Dripstone CavesAnyUncommon
Deep DarkAnyRare

Beaches / shores (adjacency-driven)

BiomeBand(s)RarityNotes
BeachEquator / Tropics / Arid / TemperateCommon
Snowy BeachSubpolar / PolarUncommon
Stony ShoreAny (overlay)Uncommon

Rivers (temperature-driven)

BiomeBand(s)RarityNotes
RiverEquator / Tropics / Arid / TemperateCommon
Frozen RiverSubpolar / PolarUncommon

Oceans (temperature-driven)

BiomeBand(s)RarityNotes
Warm OceanEquator / TropicsUncommon
Lukewarm OceanTropics / Temperate-lowUncommon
OceanTemperateCommon
Cold OceanSubpolarUncommon
Frozen OceanPolarUncommon
Deep Lukewarm OceanDepth overlayUncommon
Deep OceanDepth overlayUncommon
Deep Cold OceanDepth overlayUncommon
Deep Frozen OceanDepth overlayUncommon

The Nether (not latitude-driven)

BiomeBand(s)Rarity
Nether WastesN/ACommon
Crimson ForestN/ACommon
Warped ForestN/ACommon
Soul Sand ValleyN/AUncommon
Basalt DeltasN/AUncommon

The End (not latitude-driven)

BiomeBand(s)Rarity
The EndN/ASpecial
End HighlandsN/ACommon
End MidlandsN/ACommon
End BarrensN/ACommon
Small End IslandsN/AUncommon
The VoidN/ASpecial
Skills Info
Original Name:latitude-biome-authorityAuthor:joolbits