Biome/Before 1.18

In Java Edition 1.18 and Bedrock Edition 1.18.0, Overworld terrain generation was rewritten to become more varied and independent of biome generation. This made many biome variants that were in the game redundant, as the only difference between their regular counterparts was the way terrain generated in them. As a result, most variant biomes were removed from the generator. In Java Edition, these biomes were merged with their normal variants, while in Bedrock Edition, these biomes still exist, but remain unused.

Generation

Minecraft biomes were generated in layer stacks. These layers generated specific aspects of Minecraft biomes, such as scale, rivers, varieties, and biome categories.

Earlier stages

Biome generation was initialized as a 1 to 4096 scale of ocean, with a few spots of landmasses scattered throughout. This map was then scaled and additional landmasses shuffled around to decrease the amount of ocean, twice, to reach a scale of 1 to 1024. Additional layers that decrease the amount of ocean were repeatedly applied until the ratio of land to ocean was about 50-50. Snowy biome categories were then assigned to a few spots of land, which was then shuffled around a final time to obtain a ratio of 33% ocean and 67% landmass.

At this stage of biome generation, the final climate zones were applied as follows. Areas of dry landmasses were assigned to be a normal biome if it bordered a cold or frozen landmass. Areas of snowy landmasses were assigned to the cold temperature category if it bordered a normal or dry temperature zone. 1 out of every 13 landmasses was then marked as "Special", which would be used to place some of the rarer biomes in later stages of biome generation. This map was then scaled twice, until a scale of 1 to 256. An additional layer was applied to create a more jagged coastline, creating areas of large islands and lakes around the coastline. 1 out of 100 areas of oceans were assigned as mushroom biomes and areas of ocean far from the coast converted into deep ocean.

The final areas of climate areas were as follows: 31% oceanic, which consisted of 22% deep ocean and 9% ocean, 0.07% mushroom, 13% dry, 22% medium, 23% cold, and 6% frozen. Areas of rare biomes made up 4% of the total area.

The biome generation was then split into 3 separate stacks.

Generation of biomes and biome variants

One stack of biome generation generated the actual biomes in-game. The biome categories generated the following biomes as follows. Some biomes were weighed more and as such generated more commonly than other biomes. Snowy biomes had an unused rare biome variant and as such generated as normal snowy biomes.

• Dry biome clusters: desert (3 times), savanna (2 times), plains
• Rare dry biome clusters: 2/3 badlands (0.9% of the final map)
• Medium biome clusters: forest, dark forest, birch forest, windswept hills, swamp, plains
• Rare medium biome clusters: jungle (1.5% of the final map)
• Cold biome clusters: forest, windswept hills, taiga, plains
• Rare cold biome clusters: giant tree taiga (1.6% of the final map)
• Frozen biome clusters: snowy plains (3 times), snowy taiga

Forest and mountain biomes could generate in both cold biome clusters in addition to normal temperature clusters. Plains biomes could generate in all temperature clusters except in frozen biomes.

Bamboo jungles overwrote certain areas of jungle biomes since Village and Pillage.

This map is scaled twice until a scale of 1 to 64 in both Java and Bedrock Editions. In Legacy Console Edition, the map is not scaled at all at this stage of biome generation unless biome size was set to medium or large. To ensure a smooth transition between biomes, some biomes generate an "edge biome" as follows. These edge biomes can also generate hills and modified biome variants:

• Badlands plateau and wooded badlands plateau generate regular badlands on all edges.
• Giant tree taiga generates the regular taiga on all edges, unless there is a pre-existing snowy Taiga or taiga bordering it.
• If a desert borders a snowy tundra, a wooded mountain generates.
• If a swamp borders a jungle, a jungle edge generates. If a swamp borders a desert, snowy taiga, or snowy tundra, a plains biome generates.

Modified and hill biomes are then merged into the biome generation. Most biomes have a "hills" variant but some biomes use other biomes as their "hills" variant, which are listed below. This stage also allows islands to generate in areas of Deep Ocean:

• Dark forest -> plains
• Plains -> 1/3 wooded hills, 2/3 forest
• Snowy tundra -> snowy mountains
• Ocean -> deep ocean
• Savanna -> savanna plateau
• Deep ocean -> 1/2 plains, 1/2 forest
• Wooded badlands plateau and badlands plateau -> regular badlands

Swamps and regular badlands do not generate a hills biome variant. Oceans do not have a "modified" biome variant. While most biomes have a "modified" variant, few biomes generate a unique "modified hills" variant, such as birch forests and mountain biomes. Some other biomes use another existing biome as a "modified hills" variant. If a biome does not have a "modified hills" variant, such as swamps or snowy taigas, the regular biome variant generates instead.

Additional areas of sunflower plains were generated separately to the modified biome stage of biome generation, covering 1/57 of normal plains biome.

The map was then scaled and the coastline made more jagged, then scaled again and beaches are generated. The generation of shorelines and beaches were as follows, this also added a few additional biome edge biomes for jungles and badlands, without biome variants:

• Beaches generated on all coastlines except the regular swamp and regular badlands biomes.
• Stone shores generated on the coastline of the standard mountains and wooded mountain biomes.
• Snowy beaches generated on the coastline of all frozen biomes.
• Mushroom shores generates on the coastline of all mushroom fields biomes.
• A regular desert generates on the edge of all badlands biomes, excluding eroded badlands. The desert border does not generate next to oceans.

This also creates unique quirks in generation, where gravelly mountains and swamp hills generate a beach biome, and swamp hills bordering a regular jungle edge, with a modified jungle edge bordering jungles.

This biome map was scaled two more times (scaled 4x) until a scale of 1 to 4. River generation was merged with the regular biomes, then ocean climate zones merged.

Generation of rivers

A layer stack for river noise generation was used as a random number generator to generate areas of hills and mutated biomes, which was scaled twice before applied to the biome stage of biome generation at scale 1 to 64. Since Update Aquatic, modified biomes could conform to an entire biome or border a river. A separate layer stack to generate rivers throughout was scaled 4 times, before it was merged with the rest of the generation at scale 1 to 4.

Rivers generated across all land biomes excluding areas of oceans. Frozen rivers replaced rivers in regular snowy tundra.

Once the ocean temperature stack and river generation stack was merged with the biome generation stack, a final layer was applied to make the biome scale 1:1, which was the final biome generation used in Minecraft.

Java Edition oceanic temperature generation

Ocean biomes generated their climate zones separately from land biome generation, to avoid changing existing Minecraft seeds/biome generation in its entirely. Ocean climate zones were initialized at a scale of 1 to 256, then scaled 6 times, before it was merged with the rest of the biome generation.

In Java Edition, ocean climate areas were done so warm oceans could not border frozen oceans. One must go incrementally from warm oceans, to lukewarm oceans, regular oceans, and cold oceans, before reaching frozen oceans.

If a frozen ocean or frozen deep ocean bordered a land biome, a regular cold ocean generated. If a warm ocean generated next to a land biome, a regular lukewarm ocean generated. Warm oceans overwrote deep oceans as warm deep oceans did not generate.

Ocean climate zones were based off the 48 bit seed, unlike the rest of the land biome generation, as such, shadow seeds in Java Edition contained entirely different ocean climate areas, even though common land biomes generated identically in Java Edition shadow seeds.

Other information

In Java Edition, the possible shapes of biomes could use only the first 24 bits of the 64-bit world seed, and biome shapes within a world seed could repeat beginning around 2²⁹ blocks from 0,0. Biome generation overflowed at 2³¹ blocks from 0,0. However, as biomes were generated in a zoomed out stage, before it was scaled upward, it technically means that biome generation could extend further out during earlier stages of biome generation as the integer overflow point is further out.

Even though there are 64-bit seeds on Java, there were only 2⁶³ unique noise maps for continental/ocean biome generation, because a quadratic equation was used, and quadratic equations always can be mirrored so that for every input except one to the quadratic equation, there is another that results in the same output (halving the number of truly distinct possibilities). For any seed, the other seed resulting in the same output to this equation was colloquially known as a shadow seed. In this case, land biome and general ocean biomes were exactly the same in a pair of seeds, but ocean biome temperatures, structures and hills differed in the shadow seed. A user could find a shadow seed by adding the constant -7379792620528906219 to the negative of their current world seed, to obtain the shadow seed. Shadow seeds were exclusive to Java Edition.

With Bedrock Edition using 32-bit seeds and a different world generation algorithm, there were few similarities between it and the 64-bit world generation. The positions of mutated biomes, oceans (and islands), rare biomes (jungles, badlands, mushroom fields, giant tree taiga), as well as specific biomes in cold, temperate, or dry biome clusters, bore some geographical relationship with the equivalent positive value seed of the 64-bit generation. The biome shapes deviated significantly. The specific generation of lush biomes and ocean variants was completely different on Bedrock.

Removed/Unused biomes

Badlands

Badlands Plateau

Badlands Plateau
Structures and Features	Mineshafts
Blocks	Red Sand Terracotta Cactus Dead Bush Gold Ore
Climate
Temperature	2.0
Colors
Grass color	#90814D
Foliage color	#9E814D
Water color	#3F76E4‌  #55809E‌

The badlands plateau featured large flat-topped hills composed of stratified colors of terracotta ranging in warm colors. Plateaus had steep edges that rose to within 20-30 blocks above sea level, where they quickly flatten. The top of these plateaus typically had scattered dead bushes. Occasional ponds appeared on plateau tops. The sides of the plateau occasionally revealed caverns and mineshafts. River biomes that passed through badlands plateau biomes cut steep grooves, giving off the appearance of narrow canyons. These posed a fall damage hazard if the player was not careful. Ravines also frequently spawned in badlands plateau biomes, which caused the same as above. This biome was not always present in the badlands biomes, but it was likely to appear.

Badlands plateaus used the same mob spawning chances as badlands.

In Java Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1

Modified Badlands Plateau

Modified Badlands Plateau
Structures and Features	Mineshafts
Blocks	Red Sand Terracotta Cactus Dead Bush Gold Ore
Climate
Temperature	2.0
Colors
Grass color	#90814D
Foliage color	#9E814D
Water color	#3F76E4‌  #55809E‌

The modified badlands plateau featured smaller plateaus and somewhat harsher terrain than the badlands plateau, mimicking large plateaus that have weathered more over time. Eroded badlands replaced the usual thin desert border that this biome variant shared with other biomes. The modified badlands plateau was the second rarest biome in Minecraft, after modified jungle edge, and was only present in about 1/5 of the badlands biomes, and almost always (98% chance) came with an eroded badlands bordering the edges and modified wooded badlands plateaus surrounding it at the center.

Modified badlands plateaus used the same mob spawning chances as badlands.

In Java Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1

Modified Wooded Badlands Plateau

Modified Wooded Badlands Plateau
Structures and Features	Mineshafts
Blocks	Red Sand‌ Terracotta Cactus Dead Bush Grass Coarse Dirt Oak Log Oak Leaves Gold Ore
Climate
Temperature	2.0
Colors
Grass color	#90814D
Foliage color	#9E814D
Water color	#3F76E4‌  #497F99‌

Similar to the modified badlands plateau, the modified wooded badlands plateau had a weathered appearance and featured smaller plateaus with more erratic terrain, allowing for significantly fewer oak trees to grow at the highest layers. Eroded badlands replaced the usual thin desert border that this biome variant shared with other biomes.

Modified wooded badlands plateaus used the same mob spawning chances as badlands.

In Java Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1

Birch forest

Birch Forest Hills

Birch Forest Hills
Blocks	Grass Block Birch Log Birch Leaves Bee Nest Rose Bush Lilac Peony Lily of the Valley
Climate
Temperature	0.6
Colors
Grass color	#88BB67
Foliage color	#6BA941
Water color	#3F76E4‌  #0A74C4‌

Birch forest hills featured hillier terrain than regular birch forests, being identical to them in every other aspect. It was fairly common due to its wide spread.

Birch forest hills used the same mob spawning chances as birch forests.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	4
Pig	10⁄40	4
Chicken	10⁄40	4
Cow	8⁄40	4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	2–3
Pig	10⁄40	1–3
Chicken	10⁄40	2–4
Cow	8⁄40	2–3
Monster category
Spider	99⁄495	1
Zombie	94.25⁄495	2–4
Zombie Villager	5⁄495	2–4
Skeleton	80⁄495	1–2
Creeper	100⁄495	1
Slime	100⁄495	1
Enderman	10⁄495	1–2
Witch	5⁄495	1
Spider Jockey	1⁄495	1
Chicken Jockey	0.75⁄495	1
Ambient category
Bat	1	2

Tall Birch Hills

Tall Birch Hills
Blocks	Grass Block Birch Log Birch Leaves Bee Nest Rose Bush Lilac Peony Lily of the Valley
Climate
Temperature	0.6‌ 0.7‌
Colors
Grass color	#88BB67‌  #79C05A‌
Foliage color	#6BA941‌  #59AE30‌
Water color	#3F76E4‌  #0A74C4‌

Like the other hills biomes, the tall birch hills biome had hillier, rougher terrain, along with the taller-than-normal birch trees of the tall birch forest variant. The hills were steep in this biome, comparable to the windswept hills biome.

Tall birch hills used the same mob spawning chances as birch forests.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	4
Pig	10⁄40	4
Chicken	10⁄40	4
Cow	8⁄40	4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	2–3
Pig	10⁄40	1–3
Chicken	10⁄40	2–4
Cow	8⁄40	2–3
Monster category
Spider	99⁄495	1
Zombie	94.25⁄495	2–4
Zombie Villager	5⁄495	2–4
Skeleton	80⁄495	1–2
Creeper	100⁄495	1
Slime	100⁄495	1
Enderman	10⁄495	1–2
Witch	5⁄495	1
Spider Jockey	1⁄495	1
Chicken Jockey	0.75⁄495	1
Ambient category
Bat	1	2

Dark Forest Hills

Dark Forest Hills
Structures and Features	Woodland mansions
Blocks	Grass Block Dark Oak Log Dark Oak Leaves Oak Log Oak Leaves Birch Log Birch Leaves Mushroom Blocks Rose Bush Peony Lilac Lily of the Valley
Climate
Temperature	0.7
Colors
Grass color	#507A32
Foliage color	#59AE30
Water color	#3F76E4‌  #3B6CD1‌

Dark forest hills broke the leaf canopy, increasing visibility and decreasing the chance of daytime hostile mob spawning, though the hills were steep compared to other hill biomes. Hills generated near rivers led to cliffs. Small plains-biome clearings didn't generate within the dark forest hills variant.

Dark forest hills used the same mob spawning chances as dark forests.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	4
Pig	10⁄40	4
Chicken	10⁄40	4
Cow	8⁄40	4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	2–3
Pig	10⁄40	1–3
Chicken	10⁄40	2–4
Cow	8⁄40	2–3
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Deep Warm Ocean

Deep Warm Ocean
Structures and Features	Ocean Monuments Shipwrecks Underwater ruins
Blocks	Water Sand Bubble column Magma Block Obsidian Seagrass
Climate
Temperature	0.5
Colors
Grass color	#8EB971
Foliage color	#71A74D
Water color	#43D5EE‌  #02B0E5‌
Color of underwater's fog	#041F33‌  #0A74C4‌

The deep warm ocean was similar to the warm ocean, but twice as deep and without coral reefs or sea pickles. Since they were a deep ocean variant, tall seagrass was more frequent and ocean monuments could generate as well. Unlike shallow warm oceans, pufferfish could not spawn in deep warm oceans.

This biome did not naturally generate in any non-snapshot or beta version.

In Java Edition, deep warm oceans used the same mob spawning chances as oceans for hostile and ambient categories, and had different chances for water creature and water ambient categories:

Mob	Spawn weight	Group size
Water creature category
Dolphin	2⁄7	1–2
Squid	5⁄7	1–4
Ambient category
Bat	1	8
Monster category
Spider	100⁄521.25	4
Zombie	95⁄521.25	4
Drowned	5⁄521.25	1
Zombie Villager	5⁄521.25	1
Skeleton	100⁄521.25	4
Creeper	100⁄521.25	4
Slime	100⁄521.25	4
Enderman	10⁄521.25	1–4
Witch	5⁄521.25	1
Spider Jockey	1⁄521.25	1
Chicken Jockey	0.25⁄521.25	1
Water ambient category
Tropical Fish	1	8

In Bedrock Edition, deep warm oceans used the same mob spawning chances as warm oceans:

Mob	Spawn weight	Group size
Monster category
Spider	99⁄595	1
Zombie	94.25⁄595	2–4
Drowned	100⁄595	2–4
Zombie Villager	5⁄595	2–4
Skeleton	80⁄595	1–2
Creeper	100⁄595	1
Slime	100⁄595	1
Enderman	10⁄595	1–2
Witch	5⁄595	1
Spider Jockey	1⁄595	1
Chicken Jockey	0.75⁄595	1
Creature category
Dolphin	7⁄15	3–5
Squid	8⁄15	2–4

Desert

Desert Hills

Desert Hills
Structures and Features	Fossils Desert Wells Desert Pyramids‌
Blocks	Sand Sandstone Cactus Dead Bush
Climate
Temperature	2.0
Colors
Grass color	#BFB755
Foliage color	#AEA42A
Water color	#3F76E4‌  #1A7AA1‌

Desert hills variants featured hillier terrain, just like all other hills biomes in the game. Desert hills reached slightly higher elevations than other hills, and were comprised mostly of sand and sandstone like the rest of the desert. No structures other than fossils, desert pyramids,‌ and desert wells generated within the hills, making this variant overall more difficult. Desert hills didn't generate if their base desert is a thin border around a badlands biome.

Desert hills used the same mob spawning chances as deserts.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Rabbit	1	2–3
Monster category
Spider	100⁄516.25	4
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Husk	80⁄516.25	4
Zombie	19⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Zombie Villager	1⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄736.25	1
Zombie	95⁄736.25	2–4
Zombie Villager	5⁄736.25	2–4
Husk	240⁄736.25	2–4
Skeleton	80⁄736.25	1–2
Creeper	100⁄736.25	1
Slime	100⁄736.25	1
Enderman	10⁄736.25	1–2
Witch	5⁄736.25	1
Spider Jockey	1⁄736.25	1
Chicken Jockey	0.25⁄736.25	1
Creature category
Rabbit	1	2–3

Desert Lakes

Desert Lakes
Structures and Features	Fossils Desert Well
Blocks	Sand Sandstone Cactus Dead Bush
Climate
Temperature	2.0
Colors
Grass color	#BFB755
Foliage color	#AEA42A
Water color	#3F76E4‌

The rare desert lakes variant featured slightly rougher and hillier terrain than the base desert biome, though not as much as the desert hills. This made them more likely to have oases of water across its landscape. No structures other than fossils and desert wells generated here.

Desert lakes used the same mob spawning chances as deserts.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Rabbit	1	2–3
Monster category
Spider	100⁄516.25	4
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Husk	80⁄516.25	4
Zombie	19⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Zombie Villager	1⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Monster category
Spider	100⁄736.25	1
Zombie	95⁄736.25	2–4
Zombie Villager	5⁄736.25	2–4
Husk	240⁄736.25	2–4
Skeleton	80⁄736.25	1–2
Creeper	100⁄736.25	1
Slime	100⁄736.25	1
Enderman	10⁄736.25	1–2
Witch	5⁄736.25	1
Spider Jockey	1⁄736.25	1
Chicken Jockey	0.25⁄736.25	1
Creature category
Rabbit	1	2–3

Giant Taiga

Giant Spruce Taiga Hills

Giant Spruce Taiga hills
Structures and Features	Forest rocks
Blocks	Grass Block Podzol Coarse Dirt Mossy Cobblestone Spruce Log Spruce Leaves Fern Large Fern Dead Bush Sweet Berry Bush Mushrooms
Climate
Temperature	0.25‌ 0.3‌
Colors
Grass color	#86B783‌  #86B87F‌
Foliage color	#68A464‌  #68A55F‌
Water color	#3F76E4‌  #2D6D77‌

Giant spruce taiga hills were a variant intended to be a more mountainous version of the giant spruce taiga. However, in Java Edition, due to a likely error in the way terrain height is calculated, there was no difference in the terrain between giant spruce taiga and giant spruce taiga hills. Specifically, the game used internal values known as setBaseHeight and setHeightVariation when generating hills biomes, but these values were the same for both giant spruce taiga and giant spruce taiga hills, resulting in no actual difference between the two. This was the only hills biome in the game with this issue.

In Bedrock Edition, this biome generated as a hillier version of the giant spruce taiga, however, this biome generated the same trees as the giant tree taiga hills tree type (not giant spruce tree type) resulting in no actual difference between giant tree taiga hills and giant spruce taiga hills (except in water color).

Giant spruce taiga hills used the same mob spawning chances as giant spruce taigas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄56	2–3
Pig	10⁄56	1–3
Chicken	10⁄56	2–4
Cow	8⁄56	2–3
Wolf	8⁄56	4
Fox	8⁄56	2–4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Giant Tree Taiga Hills

Giant Tree Taiga Hills
Structures and Features	Forest rocks
Blocks	Grass Block Podzol Coarse Dirt Mossy Cobblestone Spruce Log Spruce Leaves Fern Large Fern Dead Bush Sweet Berry Bush Mushrooms
Climate
Temperature	0.3
Colors
Grass color	#86B87F
Foliage color	#68A55F
Water color	#3F76E4‌  #286378‌

Like all other hills biomes, giant tree taiga hills featured elevated, hillier terrain compared to the normal giant tree taiga, making the landscape less suitable for shelter. Podzol, coarse dirt, and rocks all still generated on the hills. Wolves, foxes and rabbit‌ spawned here.

Giant tree taiga hills used the same mob spawning chances as giant tree taigas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄541.25	4
Zombie	100⁄541.25	4
Skeleton	100⁄541.25	4
Zombie Villager	25⁄541.25	1
Creeper	100⁄541.25	4
Slime	100⁄541.25	4
Enderman	10⁄541.25	1–4
Witch	5⁄541.25	1
Spider Jockey	1⁄541.25	1
Chicken Jockey	0.25⁄541.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄56	2–3
Pig	10⁄56	1–3
Chicken	10⁄56	2–4
Cow	8⁄56	2–3
Wolf	8⁄56	4
Fox	8⁄56	2–4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Jungle

Bamboo Jungle Hills

Bamboo Jungle Hills
Structures and Features	Jungle pyramids‌ N/A‌
Blocks	Grass Block Podzol Bamboo Vines Jungle Log Jungle Leaves Oak Log Oak Leaves Melon
Climate
Temperature	0.95
Colors
Grass color	#59C93C
Foliage color	#30BB0B
Water color	#3F76E4‌  #1B9ED8‌

The bamboo jungle hills variant was similar to the bamboo jungle, though with steeper terrain just like the regular jungle hills variant. Large amounts of bamboo covered the landscape, and patches of podzol replaced most grass blocks. Naturally-generated trees were always large variants, and pandas spawned here, like in the bamboo jungle. Jungle pyramids also spawned here in Java Edition.

In Java Edition, bamboo jungle hills used the same mob spawning chances as jungle hills for hostile and ambient categories, and had different chances for passive categories:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄130	4
Pig	10⁄130	4
Chicken	10⁄130	4
Cow	8⁄130	4
Parrot	10⁄130	1
Panda	80⁄130	1–2
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

In Bedrock Edition, bamboo jungle hills used the same mob spawning chances as bamboo jungles:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄150	2–3
Pig	10⁄150	1–3
Chicken	10⁄150	2–4
Cow	8⁄150	2–3
Parrot	40⁄150	1–2
Panda	40⁄150	1–2
Ocelot	30⁄150	1–2
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Jungle Hills

Jungle Hills
Structures and Features	Jungle pyramids
Blocks	Grass Block Vines Jungle Log Jungle Leaves Cocoa Oak Log Oak Leaves Melon Bamboo
Climate
Temperature	0.95
Colors
Grass color	#59C93C
Foliage color	#30BB0B
Water color	#3F76E4‌  #1B9ED8‌

Similar to the wooded hills biome, the jungle hills biome featured steeper terrain, making it a more difficult variant of the already difficult jungle for survival purposes. Ocelots, parrots, and pandas spawned here and jungle pyramids generated here.

In Java Edition, jungle hills used the same mob spawning chances as jungles for ambient categories, and had different chances for the others:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄63	4
Pig	10⁄63	4
Chicken	10⁄63	4
Cow	8⁄63	4
Parrot	10⁄63	1
Panda	1⁄63	1–2
Chicken	10⁄63	4
Ocelot	2⁄63	1–1
Monster category
Spider	100⁄515	4
Zombie	95⁄515	4
Zombie Villager	5⁄515	1
Skeleton	100⁄515	4
Creeper	100⁄515	4
Slime	100⁄515	4
Enderman	10⁄515	1–4
Witch	5⁄515	1
Ambient category
Bat	1	8

In Bedrock Edition, jungle hills used the same mob spawning chances as jungles:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄120	2–3
Pig	10⁄120	1–3
Chicken	10⁄120	2–4
Cow	8⁄120	2–3
Parrot	40⁄120	1–2
Panda	10⁄120	1–2
Ocelot	30⁄120	1–2
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Modified Jungle

Modified Jungle
Blocks	Grass Block Vines Jungle Log Jungle Leaves Cocoa Oak Log Oak Leaves Melon Bamboo
Climate
Temperature	0.95
Colors
Grass color	#59C93C
Foliage color	#30BB0B
Water color	#3F76E4‌  #1B9ED8‌

The rare modified jungle variant featured much more mountainous terrain, being taller and steeper than jungle hills. The heights, combined with the thick foliage, rendered the ground below almost entirely out of sight. Ocelots, parrots, and pandas spawned in this biome, but jungle pyramids didn't generate here.

In Java Edition, modified jungles used the same mob spawning chances as jungle hills for hostile and ambient categories, and had different chances for passive categories:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Parrot	10⁄60	1
Chicken	10⁄60	4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition, modified jungles used the same mob spawning chances as jungles:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄120	2–3
Pig	10⁄120	1–3
Chicken	10⁄120	2–4
Cow	8⁄120	2–3
Parrot	40⁄120	1–2
Panda	10⁄120	1–2
Ocelot	30⁄120	1–2
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Modified Jungle Edge

Modified Jungle Edge
Blocks	Grass Block Vines Jungle Log Jungle Leaves Cocoa Oak Log Oak Leaves Melon Pumpkin
Climate
Temperature	0.95
Colors
Grass color	#64C73F
Foliage color	#3EB80F
Water color	#3F76E4‌  #0D8AE3‌

The rare modified jungle edge variant generated only in strict conditions, and it was the rarest biome in the game. If a jungle biome bordered a swamp hills biome, then the modified jungle edge spawned as part of a double-layered transition, with a thin normal jungle edge bordering the swamp hills, and the modified jungle edge bordering the jungle. As both jungles and swamp hills were already rare, and even more rarely did they generate bordering each other, the conditions for a modified jungle edge to generate were rarely met. When they actually did manage to generate, they were often just a few hundred blocks in length, but in some cases were less than 10 blocks, making them one of the smallest biomes as well. Modified jungle edges featured the same smooth transition and lowered tree density that regular jungle edges had, though with much more mountainous terrain and occasional overhangs. Ocelots, parrots, and pandas spawned in this biome, but jungle pyramids didn't generate here. Modified jungle edges covered only a few millionths (0.00027%) of the overworld by area.

Modified jungle edges used the same mob spawning chances as jungle edges.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄50	4
Pig	10⁄50	4
Chicken	10⁄50	4
Cow	8⁄50	4
Chicken	10⁄50	4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄120	2–3
Pig	10⁄120	1–3
Chicken	10⁄120	2–4
Cow	8⁄120	2–3
Parrot	40⁄120	1–2
Panda	10⁄120	1–2
Ocelot	30⁄120	1–2
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Mountains

Gravelly Mountains+

Gravelly Mountains+
Blocks	Gravel Grass Block Snow Stone Emerald Ore Coal Ore Iron Ore Infested Stone
Climate
Temperature	0.2
Colors
Grass color	#8AB689
Foliage color	#6DA36B
Water color	#3F76E4‌  #0E63AB‌

Gravelly mountains+, also referred to as modified gravelly mountains in code, was a rare variant of the wooded hill biome that had the exact same features as the regular gravelly mountains, making this biome almost indistinct from the former. with the only difference being the fact that it can rarely generate standalone as a thick separation when a desert lakes biome borders a snowy biome.

Gravelly mountains+ had the same mob spawning chances as windswept hills.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄45	4
Pig	10⁄45	4
Chicken	10⁄45	4
Cow	8⁄45	4
Llama	5⁄45	4–6
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Goat	20⁄83	2–3
Sheep	12⁄83	2–3
Pig	10⁄83	1–3
Chicken	10⁄83	2–4
Glow Squid	10⁄83	2–4
Cow	8⁄83	2–3
Axolotl	8⁄83	1–4
Llama	5⁄83	4–6
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Mountain Edge

Mountain Edge
Blocks	Grass Block Oak Log Oak Leaves Spruce Log Spruce Leaves Snow Stone Emerald Ore Coal Ore Iron Ore Infested Stone
Climate
Temperature	0.2
Colors
Grass color	#8AB689
Foliage color	#6DA36B
Water color	#3F76E4‌

The mountain edge variant used to generate before Java Edition 1.7.2. Similarly to the sparse jungle biome, it was a technical biome intended to provide a smooth transition from other biomes to the windswept hills. It was nearly identical to the wooded mountain biome, but with gentler slopes.

Mountain edges had the same mob spawning chances as windswept hills.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄45	4
Pig	10⁄45	4
Chicken	10⁄45	4
Cow	8⁄45	4
Llama	5⁄45	4–6
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Goat	20⁄83	2–3
Sheep	12⁄83	2–3
Pig	10⁄83	1–3
Chicken	10⁄83	2–4
Glow Squid	10⁄83	2–4
Cow	8⁄83	2–3
Axolotl	8⁄83	1–4
Llama	5⁄83	4–6
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Mushroom Field Shore

Mushroom Field Shore
Structures and Features	Huge Mushroom Shipwreck‌ Buried Treasure‌
Blocks	Mycelium Mushroom Blocks Mushrooms
Climate
Temperature	0.9
Colors
Grass color	#55C93F
Foliage color	#2BBB0F
Water color	#3F76E4‌  #818193‌

The mushroom field shore was a technical biome that represented both the shores and the rivers of the mushroom fields. It generated when a river cus through it as well as when it bordered an ocean, unless the ocean was a deep variant, in which case a steep cliff generated instead. The terrain of this biome was much flatter and shallower in elevation, similar to beaches, though it was equal to the mushroom fields in every other way. Buried treasure and shipwrecks generated here.

Mushroom field shores used the same mob spawning chances as mushroom fields.

In Java Edition:

Mob	Spawn weight	Group size
Ambient category
Bat	1	8
Creature category
Mooshroom	1	4–8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Mooshroom	1	4–8

Shattered Savanna Plateau

Shattered Savanna Plateau
Blocks	Grass Block Coarse Dirt Stone Tall Grass Acacia Log Acacia Leaves Oak Log Oak Leaves
Climate
Temperature	1.0
Colors
Grass color	#BFB755‌  #55C93F‌
Foliage color	#AEA42A‌  #2BBB0F‌
Water color	#3F76E4‌  #2590A8‌

Like the normal windswept savanna, the shattered savanna plateau variant featured steep mountains, cliffs, and overhangs, which made it a treacherous place to explore. Though it was nearly indistinguishable from the regular shattered savanna at first glance, the shattered plateau's terrain was slightly gentler, though often risked fatal fall damage if not above water. The giant lakes characteristic of the regular shattered savanna did not generate here either. In Bedrock Edition, the foliage was a more vibrant green color, and rain would often occur in it.

Shattered savanna plateaus used the same mob spawning chances as savannas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄42	4
Pig	10⁄42	4
Chicken	10⁄42	4
Cow	8⁄42	4
Horse	1⁄42	2–6
Donkey	1⁄42	1
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄49	2–3
Pig	10⁄49	1–3
Chicken	10⁄49	2–4
Cow	8⁄49	2–3
Horse	1⁄49	2–6
Llama	8⁄49	4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Snowy Mountains

Snowy Mountains
Blocks	Snow Grass Block Ice Spruce Log Spruce Leaves
Climate
Temperature	0.0
Colors
Grass color	#80B497
Foliage color	#60A17B
Water color	#3F76E4‌  #1156A7‌

These hills were no taller than most other hill biomes in the game, despite the name 'mountains'. No structures generated in this biome, though polar bears, rabbits and strays spawned. Caves frequently generated on the sides of the mountains. In Bedrock Edition, no hostile mobs other than strays and skeletons spawned here.

Snowy mountains used the same mob spawning chances as snowy plains.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Rabbit	10⁄11	2–3
Polar Bear	1⁄11	1–2
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Stray	80⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Skeleton	20⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Zombie Villager	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Monster category
Stray	96⁄220	1–2
Skeleton	24⁄220	1–2
Slime	100⁄220	1
Creature category
Rabbit	4⁄5	2–3
Polar Bear	1⁄5	1–2

Snowy Taiga

Snowy Taiga Hills

Snowy Taiga Hills
Structures and Features	Villages‌ Pillager Outposts‌
Blocks	Grass Block Snow Grass Fern Sweet Berry Bush Large Fern Spruce Log Spruce Leaves
Climate
Temperature	-0.5
Colors
Grass color	#80B497
Foliage color	#60A17B
Water color	#3D57D6‌  #245B78‌

Like all other hills biomes, snowy taiga hills featured hillier, more erratic terrain. These hills were somewhat steep, making this variant difficult for survival mode. Pillager outposts and villages generated in this biome‌, however, unlike the regular snowy taiga, igloos didn't generate here.

Snowy taiga hills used the same mob spawning chances as snowy taigas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	2–3
Pig	10⁄60	1–3
Chicken	10⁄60	2–4
Cow	8⁄60	2–3
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Snowy Taiga Mountains

Snowy Taiga Mountains
Blocks	Grass Block Snow Grass Fern Sweet Berry Bush Large Fern Spruce Log Spruce Leaves
Climate
Temperature	-0.5
Colors
Grass color	#80B497
Foliage color	#60A17B
Water color	#3D57D6‌  #205E83‌

The very rare snowy taiga mountains featured much steeper terrain than the hills. Similarly to the taiga mountains, this variant reached high elevations. The steep elevations made this biome difficult for survival. Buildings didn't generate here. This biome was the third rarest in the game, behind modified badlands plateau and modified jungle edge.

Snowy taiga mountains used the same mob spawning chances as snowy taigas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	2–3
Pig	10⁄60	1–3
Chicken	10⁄60	2–4
Cow	8⁄60	2–3
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Swamp Hills

Swamp Hills
Structures and Features	Fossils Swamp Huts‌ Huge Mushrooms‌
Blocks	Grass Block Water Lily Pad Clay Vines Oak Log Oak Leaves Blue Orchid Mushrooms
Climate
Temperature	0.8 (default; varies within swamp)
Colors
Grass color	#6A7039  #4C763C (temperature < 0.1)
Foliage color	#6A7039
Water color	#617B64‌  #4C6156‌
Color of underwater's fog	#232317‌  #4C6156‌

The swamp hills variant featured hillier terrain rising up between the flat marshes. These hills would tower over the otherwise low-elevation swamp. Additionally, flooded areas in swamp hills tended to reach lower depths than the rest of the swamp, sometimes deep enough to have a gravel floor in place of a dirt floor, like normal oceans. Swamp huts did not generate in swamp hills‌, nor did slimes spawn, but fossils did still generate underground. Additionally, seagrass did not generate in flooded areas of swamp hills. If it connected to a jungle edge it had a chance to create a modified jungle edge biome.

Swamp hills used the same mob spawning chances as swamps.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	4
Pig	10⁄40	4
Chicken	10⁄40	4
Cow	8⁄40	4
Monster category
Spider	100⁄517.25	4
Zombie	95⁄517.25	4
Zombie Villager	5⁄517.25	1
Skeleton	100⁄517.25	4
Creeper	100⁄517.25	4
Slime	100⁄517.25	4
Enderman	10⁄517.25	1–4
Witch	5⁄517.25	1
Slime	1⁄517.25	1
Spider Jockey	1⁄517.25	1
Chicken Jockey	0.25⁄517.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄40	2–3
Pig	10⁄40	1–3
Chicken	10⁄40	2–4
Cow	8⁄40	2–3
Monster category
Spider	100⁄596.25	1
Zombie	95⁄596.25	2–4
Zombie Villager	5⁄596.25	2–4
Skeleton	80⁄596.25	1–2
Creeper	100⁄596.25	1
Slime	100⁄596.25	1
Enderman	10⁄596.25	1–2
Witch	5⁄596.25	1
Slime	100⁄596.25	1
Spider Jockey	1⁄596.25	1
Chicken Jockey	0.25⁄596.25	1
Ambient category
Bat	1	2

Taiga

Taiga Hills

Taiga Hills
Structures and Features	Villages‌ Pillager Outposts‌
Blocks	Grass Block Grass Fern Large Fern Sweet Berry Bush Spruce Log Spruce Leaves
Climate
Temperature	0.25
Colors
Grass color	#86B783
Foliage color	#68A464
Water color	#3F76E4‌  #236583‌

Taiga hills, like all other hills biomes in the game, featured steeper terrain compared to the base taiga biome. Villages and outposts didn't generate in this biome‌, though wolves and foxes still spawned.

Taiga hills used the same mob spawning chances as taigas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	2–3
Pig	10⁄60	1–3
Chicken	10⁄60	2–4
Cow	8⁄60	2–3
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Taiga Mountains

Taiga Mountains
Blocks	Grass Block Grass Fern Large Fern Sweet Berry Bush Spruce Log Spruce Leaves
Climate
Temperature	0.25
Colors
Grass color	#86B783
Foliage color	#68A464
Water color	#3F76E4‌  #1E6B82‌

The rare taiga mountains variant was much steeper than the taiga hills, with peaks occasionally crossing the snowfall line. The steep terrain made this a more difficult version of the regular taiga. Like the hills, villages and outposts didn't generate here, though wolves and foxes still spawned.

Taiga mountains used the same mob spawning chances as taigas.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	4
Pig	10⁄60	4
Chicken	10⁄60	4
Cow	8⁄60	4
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄60	2–3
Pig	10⁄60	1–3
Chicken	10⁄60	2–4
Cow	8⁄60	2–3
Wolf	8⁄60	4
Rabbit	4⁄60	2–3
Fox	8⁄60	2–4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Wooded Hills

Wooded Hills
Blocks	Grass Block Oak Log Oak Leaves Birch Log Birch Leaves Bee Nest Rose Bush Lilac Peony Lily of the Valley
Climate
Temperature	0.7
Colors
Grass color	#79C05A
Foliage color	#59AE30
Water color	#3F76E4‌  #056BD1‌

Wooded hills were similar to forests, though the terrain was hillier and generally more erratic, making it less suitable for shelter. Wolves spawned here.

Wooded hills used the same mob spawning chances as forests.

In Java Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄45	4
Pig	10⁄45	4
Chicken	10⁄45	4
Cow	8⁄45	4
Wolf	5⁄45	4
Monster category
Spider	100⁄516.25	4
Zombie	95⁄516.25	4
Zombie Villager	5⁄516.25	1
Skeleton	100⁄516.25	4
Creeper	100⁄516.25	4
Slime	100⁄516.25	4
Enderman	10⁄516.25	1–4
Witch	5⁄516.25	1
Spider Jockey	1⁄516.25	1
Chicken Jockey	0.25⁄516.25	1
Ambient category
Bat	1	8

In Bedrock Edition:

Mob	Spawn weight	Group size
Creature category
Sheep	12⁄45	2–3
Pig	10⁄45	1–3
Chicken	10⁄45	2–4
Cow	8⁄45	2–3
Wolf	5⁄45	4
Monster category
Spider	100⁄496.25	1
Zombie	95⁄496.25	2–4
Zombie Villager	5⁄496.25	2–4
Skeleton	80⁄496.25	1–2
Creeper	100⁄496.25	1
Slime	100⁄496.25	1
Enderman	10⁄496.25	1–2
Witch	5⁄496.25	1
Spider Jockey	1⁄496.25	1
Chicken Jockey	0.25⁄496.25	1
Ambient category
Bat	1	2

Data values

ID

Java Edition:

Name	Identifier	Translation key
Badlands Plateau	badlands_plateau	biome.minecraft.badlands_plateau
Bamboo Jungle Hills	bamboo_jungle_hills	biome.minecraft.bamboo_jungle_hills
Birch Forest Hills	birch_forest_hills	biome.minecraft.birch_forest_hills
Dark Forest Hills	dark_forest_hills	biome.minecraft.dark_forest_hills
Deep Warm Ocean	deep_warm_ocean	biome.minecraft.deep_warm_ocean
Desert Hills	desert_hills	biome.minecraft.desert_hills
Desert Lakes	desert_lakes	biome.minecraft.desert_lakes
Giant Spruce Taiga Hills	giant_spruce_taiga_hills	biome.minecraft.giant_spruce_taiga_hills
Giant Tree Taiga Hills	giant_tree_taiga_hills	biome.minecraft.giant_tree_taiga_hills
Gravelly Mountains+	modified_gravelly_mountains	biome.minecraft.modified_gravelly_mountains
Jungle Hills	jungle_hills	biome.minecraft.jungle_hills
Modified Badlands Plateau	modified_badlands_plateau	biome.minecraft.modified_badlands_plateau
Modified Jungle	modified_jungle	biome.minecraft.modified_jungle
Modified Jungle Edge	modified_jungle_edge	biome.minecraft.modified_jungle_edge
Modified Wooded Badlands Plateau	giant_tree_taiga_hills	biome.minecraft.giant_tree_taiga_hills
Mountain Edge	mountain_edge	biome.minecraft.mountain_edge
Mushroom Field Shore	mushroom_field_shore	biome.minecraft.mushroom_field_shore
Shattered Savanna Plateau	shattered_savanna_plateau	biome.minecraft.shattered_savanna_plateau
Snowy Mountains	snowy_mountains	biome.minecraft.snowy_mountains
Snowy Taiga Hills	snowy_taiga_hills	biome.minecraft.snowy_taiga_hills
Snowy Taiga Mountains	snowy_taiga_mountains	biome.minecraft.snowy_taiga_mountains
Swamp Hills	swamp_hills	biome.minecraft.swamp_hills
Taiga Hills	taiga_hills	biome.minecraft.taiga_hills
Taiga Mountains	taiga_mountains	biome.minecraft.taiga_mountains
Tall Birch Hills	tall_birch_hills	biome.minecraft.tall_birch_hills
Wooded Hills	wooded_hills	biome.minecraft.wooded_hills

Bedrock Edition:

Name	Identifier	Translation key
[No displayed name]	mesa_plateau	biome.mesa_plateau.name
[No displayed name]	bamboo_jungle_hills	biome.bamboo_jungle_hills.name
[No displayed name]	birch_forest_hills	biome.birch_forest_hills.name
[No displayed name]	roofed_forest_mutated	biome.roofed_forest_mutated.name
[No displayed name]	deep_warm_ocean	biome.deep_warm_ocean.name
[No displayed name]	desert_hills	biome.desert_hills.name
[No displayed name]	desert_mutated	biome.desert_mutated.name
[No displayed name]	redwood_taiga_hills_mutated	biome.redwood_taiga_hills_mutated.name
[No displayed name]	mega_taiga_hills	biome.mega_taiga_hills.name
[No displayed name]	extreme_hills_plus_trees_mutated	biome.extreme_hills_plus_trees_mutated.name
[No displayed name]	jungle_hills	biome.jungle_hills.name
[No displayed name]	mesa_plateau_mutated	biome.mesa_plateau_mutated.name
[No displayed name]	jungle_mutated	biome.jungle_mutated.name
[No displayed name]	jungle_edge_mutated	biome.jungle_edge_mutated.name
[No displayed name]	mesa_plateau_stone_mutated	biome.mesa_plateau_stone_mutated.name
[No displayed name]	extreme_hills_edge	biome.extreme_hills_edge.name
[No displayed name]	mushroom_island_shore	biome.mushroom_island_shore.name
[No displayed name]	savanna_plateau_mutated	biome.savanna_plateau_mutated.name
[No displayed name]	ice_mountains	biome.ice_mountains.name
[No displayed name]	cold_taiga_hills	biome.cold_taiga_hills.name
[No displayed name]	cold_taiga_mutated	biome.cold_taiga_mutated.name
[No displayed name]	swampland_mutated	biome.swampland_mutated.name
[No displayed name]	taiga_hills	biome.taiga_hills.name
[No displayed name]	taiga_mutated	biome.taiga_mutated.name
[No displayed name]	birch_forest_hills_mutated	biome.birch_forest_hills_mutated.name
[No displayed name]	forest_hills	biome.forest_hills.name

History

Java Edition
1.7.2		13w36a			Mountain edge biomes no longer generate naturally.
1.18		Experimental Snapshot 1			A lot of biomes no longer generated naturally, because they were no longer needed.
					Deep warm ocean biomes now naturally generate.
		21w40a			Removed every unused biome.
		21w43a			Removed deep warm ocean biomes.
Bedrock Edition
1.18.0		beta 1.18.0.20			Deep warm ocean biomes now naturally generate by default without enabling experimental gameplay.
		beta 1.18.0.25			The deep warm ocean biomes no longer generate naturally.

References

Biomes 

View at: Template:Biomes/content [edit]