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
| Biome | Band(s) | Rarity | Notes |
|---|
| Plains | Temperate | Common | Core mid-latitude flatland. |
| Sunflower Plains | Temperate | Rare | Rare plains variant. |
| Savanna | Arid ↔ Tropics | Uncommon | Warm transition biome. |
| Savanna Plateau | Arid / Tropics | Uncommon | Highland warm biome. |
| Snowy Plains | Subpolar | Common | Main cold flatland. |
| Ice Spikes | Polar | Very rare | Cold extreme. |
| Mushroom Fields | Any (special) | Very rare | Special-case island biome; not latitude-driven. |
Forests / woodlands
| Biome | Band(s) | Rarity | Notes |
|---|
| Forest | Temperate | Common | |
| Birch Forest | Temperate | Common | |
| Flower Forest | Temperate | Rare | Discovery biome. |
| Dark Forest | Temperate | Uncommon | Dense canopy. |
| Old Growth Birch Forest | Temperate | Rare | Large birch variant. |
| Taiga | Temperate-high → Subpolar-low | Common | Key transition biome. |
| Old Growth Pine Taiga | Temperate-high → Subpolar | Uncommon | |
| Old Growth Spruce Taiga | Subpolar | Uncommon | |
| Snowy Taiga | Subpolar | Uncommon | |
| Pale Garden | Temperate (rare) | Very rare | Dark-forest-adjacent oddity. |
Jungle family (warm + wet)
| Biome | Band(s) | Rarity | Notes |
|---|
| Jungle | Equator / Tropics | Uncommon | Dense near equator. |
| Bamboo Jungle | Equator / Tropics | Rare | |
| Sparse Jungle | Tropics | Uncommon | Transition biome. |
| Mangrove Swamp | Equator / Tropics | Rare | Must not appear in cool bands. |
Swamps / wetlands
| Biome | Band(s) | Rarity | Notes |
|---|
| Swamp | Tropics ↔ Temperate-low | Uncommon | Warm temperate transition. |
| Mangrove Swamp | Equator / Tropics | Rare | Warm-only swamp. |
Sandy / dry / badlands
| Biome | Band(s) | Rarity | Notes |
|---|
| Desert | Arid | Uncommon | |
| Badlands | Arid | Rare | |
| Wooded Badlands | Arid | Rare | |
| Eroded Badlands | Arid | Very rare | Extreme terrain. |
Mountains / highlands (overlay-only)
| Biome | Band(s) | Rarity | Notes |
|---|
| Meadow | Temperate (overlay) | Uncommon | |
| Grove | Temperate-high / Subpolar (overlay) | Uncommon | Must be explicitly preserved. |
| Cherry Grove | Temperate (overlay) | Rare | |
| Windswept Hills | Temperate (overlay) | Uncommon | |
| Windswept Forest | Temperate (overlay) | Uncommon | |
| Windswept Gravelly Hills | Temperate (overlay) | Rare | |
| Windswept Savanna | Arid / Tropics (overlay) | Uncommon | |
| Stony Peaks | Arid / Tropics / Temperate (overlay) | Rare | |
| Jagged Peaks | Subpolar / Polar (overlay) | Rare | |
| Frozen Peaks | Subpolar / Polar (overlay) | Rare | |
| Snowy Slopes | Subpolar / Polar (overlay) | Uncommon | |
| Stony Shore | Any (adjacency overlay) | Uncommon | Mountains touching ocean only. |
Caves (not latitude-driven)
| Biome | Band(s) | Rarity | Notes |
|---|
| Lush Caves | Any | Uncommon | |
| Dripstone Caves | Any | Uncommon | |
| Deep Dark | Any | Rare | |
Beaches / shores (adjacency-driven)
| Biome | Band(s) | Rarity | Notes |
|---|
| Beach | Equator / Tropics / Arid / Temperate | Common | |
| Snowy Beach | Subpolar / Polar | Uncommon | |
| Stony Shore | Any (overlay) | Uncommon | |
Rivers (temperature-driven)
| Biome | Band(s) | Rarity | Notes |
|---|
| River | Equator / Tropics / Arid / Temperate | Common | |
| Frozen River | Subpolar / Polar | Uncommon | |
Oceans (temperature-driven)
| Biome | Band(s) | Rarity | Notes |
|---|
| Warm Ocean | Equator / Tropics | Uncommon | |
| Lukewarm Ocean | Tropics / Temperate-low | Uncommon | |
| Ocean | Temperate | Common | |
| Cold Ocean | Subpolar | Uncommon | |
| Frozen Ocean | Polar | Uncommon | |
| Deep Lukewarm Ocean | Depth overlay | Uncommon | |
| Deep Ocean | Depth overlay | Uncommon | |
| Deep Cold Ocean | Depth overlay | Uncommon | |
| Deep Frozen Ocean | Depth overlay | Uncommon | |
The Nether (not latitude-driven)
| Biome | Band(s) | Rarity |
|---|
| Nether Wastes | N/A | Common |
| Crimson Forest | N/A | Common |
| Warped Forest | N/A | Common |
| Soul Sand Valley | N/A | Uncommon |
| Basalt Deltas | N/A | Uncommon |
The End (not latitude-driven)
| Biome | Band(s) | Rarity |
|---|
| The End | N/A | Special |
| End Highlands | N/A | Common |
| End Midlands | N/A | Common |
| End Barrens | N/A | Common |
| Small End Islands | N/A | Uncommon |
| The Void | N/A | Special |
