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A swamp biome.

Swamps are temperate, murky biomes. There are two variants in the biome family.


Swamps are mostly flat biomes, with elevations low enough to go below sea level throughout much of the area. Large portions of swamps are flooded, from marsh-like patches of single blocks of grass forming in shallow water, to large lakes, with patches of clay on the lakebed. Water in swamps takes on a gray-green color at the surface, turning pale yellow when submerged in it. Unlike most biomes, swamps have varying temperatures, which affects the color of grass blocks, grass and leaves.

Vegetation includes oak trees, that can grow in shallow water and generate with vines growing on them. Sugar cane is found often growing on shores, while seagrass litters the bottom of flooded areas. Blue orchids may grow among the grass, while lily pads dot the surfaces of lakes; both are found exclusively in swamps. In Bedrock Edition, huge mushrooms can generate as well.

Swamp huts can be rarely found in swamps, housing a witch and a black cat. Only witches can spawn in and around the hut. Swamps, alongside deserts, can generate fossils, rare structures found underground around Y=50.

Slimes can spawn in swamps at low light levels, alongside common monsters, between elevations of Y=50 and Y=70 (exclusive). Their spawn rate is affected by the moon phase, spawning most often during full moon and not spawning at all during new moon.

Villagers that spawn in swamps get a unique swamp-themed look. While villagers have swamp-specific types, no village featuring exclusively these villagers can be generated. The only way for these villagers to spawn is either by being bred in swamp or curing a zombie villager that spawned in a swamp.

Survival in swamps can be somewhat easy if the player finds a large-enough clearing for a shelter. Wood supply is good without being overwhelming, water is abundant, and terrain is often flat. Swamp huts can also be converted into witch farms, should the player want to easily harvest their drops. However, slimes spawning alongside hostile mobs can make nighttime survival more difficult if the player does not sufficiently light their surroundings.

Swamp biomes are usually found next to other lush biomes, such as forests, dark forests, birch forests, and plains biomes. Like aquatic biomes, swamp biomes undergo little to no change when generated in the Amplified world type.‌[Java Edition only]


There are a total of two different swamp biome variants.







0.8 (default; varies within swamp)


Swamp Huts
Huge Mushrooms[BE only]


Grass Block
Lily Pad
Oak Log
Oak Leaves
Blue Orchid
Dead Bush[1]

The swamp biome is the standard swamp variant. Non-flooded areas of this biome feature relatively flat terrain, similarly to plains biomes, though with significantly more trees and less tall grass. Some parts of the swamp may have marsh-like terrain, where the grass has multiple single blocks of water generating within it. At nighttime, depending on the moon phase, slimes may spawn at Y-levels 50-70 alongside other hostile mobs, making swamps the only places aboveground where slimes can be found. Swamp huts and fossils also generate in this biome.

In Java Edition:

MobSpawn chanceGroup size
Passive category
Hostile category
Zombie Villager55161
Slime[note 1]1005164
Slime[note 1]15161
Ambient category
  1. a b Spawning is greatly affected by moon phase

In Bedrock Edition:

MobSpawn chanceGroup size
Passive category
Hostile category
Zombie Villager55952–4
Slime[note 1]1005951
Slime[note 1]1005951
Ambient category
  1. a b Spawning is greatly affected by moon phase

Swamp Hills[]

Swamp Hills
Swamp Hills.png





0.8 (default; varies within swamp)


Swamp Huts[BE only] Huge Mushrooms[BE only]


Grass Block
Lily Pad
Oak Log
Oak Leaves
Blue Orchid

The swamp hills variant features hillier terrain rising up between the flat marshes. These hills can tower over the otherwise low-elevation swamp. Additionally, flooded areas in swamp hills tend 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 do not generate in swamp hills‌[Java Edition only], nor do slimes spawn, but fossils may still generate underground. Additionally, seagrass does not generate in flooded areas of swamp hills. If it is connected to a jungle edge it has a chance of creating a modified jungle edge biome

Swamp hills use the same mob spawning chances as swamps.

Data values[]


Java Edition:

NameNamespaced IDTranslation key
Swamp Hillsswamp_hillsbiome.minecraft.swamp_hills

Bedrock Edition:

NameNamespaced IDNumeric ID
[No displayed name]swampland6
[No displayed name]swampland_mutated134


Java Edition Alpha
v1.2.0previewAdded proper biomes, including swamps. however, the biome itself was completely different from their modern counterparts.
Forests are defined by having a rainfall value of 40% or greater and a temperature value between 50% and 70%.
Java Edition Beta
1.8September 3, 2011Notch teased a screenshot of the new swamp biome, with oak trees with vines.
Pre-releaseSwamp biome generation has been overhauled. swamp oak trees, vines, marsh-like areas, and dead bushes now generate. foliage and grass is now a lush green color.
Snow no longer generates in swamps.
Java Edition
1.0.0Beta 1.9 PrereleaseGrass, leaves, and water blocks are now tinted a dark, grayish green on swamps. however, this change resulted in biome color and biome transitions becoming essentially nonexistent.
Lily Pads now generate in swamps.
1.112w01aColor transitions in swamp biomes have been fixed and have been smoothed
1.4.212w40aAdded witch huts, which may generate in swamps.
Slimes now spawn in swamp biomes.
1.7.213w36aSwampland M variant added, along with many other biomes. Its grass color now varies.
13w38bMarsh-like areas and dead bushes no longer generate in swamp biomes.
1.814w26aMarsh-like areas and dead bushes generate again in swamp biomes.
1.1016w20aAdded fossils, which can generate in swamps.
1.1318w14aSeagrass now generates in swamps.
18w15aSwamp Water JE.pngSwamp Hills Water 18w15a.png Changed the tint of water in the swamp biomes from blue to gray to match Bedrock Edition. However, mutated swamps still use the same tint, resulting in chlorine-colored water.
18w16a"Swampland M" has been renamed to "Mutated Swampland".
18w19a"Swampland" has been renamed to "Swamp".
"Mutated Swampland" has been renamed to "Swamp Hills".
pre3Swamp Water JE.png Swamp hills now use the correct water color.
pre5The ID swampland has been changed to swamp.
The ID mutated_swampland has been changed to swamp_hills.
1.1418w43aDrowneds no longer spawn in swamps.
Upcoming Java Edition
1.18Experimental Snapshot 1Swamp hills no longer generate naturally.
Swamp biomes currently do not generate correctly.
experimental snapshot 2Swamp biome generation has been fixed.
Pocket Edition Alpha
v0.9.0build 1Added swamps and swamp hills, along with many other biomes.
v0.10.0build 1The water in swamps is now tinted dark gray.
Huge mushrooms now generate in swamps.
v0.14.0build 1Added witch huts, which generate in swamps.
Pocket Edition
1.1.3alpha fossils, which can be found in swamps.
Bedrock Edition
1.4.0beta drowned, which can spawn in swamps.
1.10.0beta no longer spawn during the day in swamps.
Legacy Console Edition
TU5CU1 1.00 Patch 11.0.1Added swamps.
TU9Color transitions within swamps have been smoothed.
TU19CU7 1.12 Added witch huts, which generate only in swamps.
TU31CU19 1.22 Patch 3Added Swampland M variant.
Generation of marsh-like areas in swamp biomes has been changed.
TU43CU33 1.36 Patch 13Added fossils, which can generate in swamps.


Note that images with blue water were taken before Java Edition 1.13, which changed the color of water in swamps from blue to gray.

See also[]