View source for Minecraft:Single Biome

{{Unobtainable|edition=bedrock}}
[[File:Wooded Hills Vibrant Visuals.png|thumb|A single biome world set to [[forest]] or [[Minecraft:Wooded Hills|wooded hills]] generates an endless forest, even in oceans, mountains, or caves.]]'''Single biome''' is a [[Minecraft:world type]] or a vanilla [[Minecraft:world preset]] in which the entire [[Minecraft:Overworld]] consists of one [[Minecraft:biome]]. It is simple to customize, albeit very limited.

== Usage ==

=== ''Java Edition'' ===
[[File:BuffetWorldCustomization.png|right|thumb|300px|The customization screen for single biome]]
Single biome can be enabled in the [[Minecraft:Create New World]] screen, on the "World Type" button. This reveals a menu where the player can select any existing biome to generate in the Overworld.

[[Minecraft:Server]] operators can set a single biome world type by setting <code>level-type=minecraft:single_biome_surface</code> in [[Minecraft:server.properties]], although this defaults to [[Minecraft:plains]] and cannot be customized.

Additionally, players can override any dimension with the same fixed biome source generation like single biome using a [[Minecraft:custom dimension]] data pack.

=== ''Bedrock Edition'' ===
Code for the single biome world type exists in ''Bedrock Edition''; however, it is inaccessible through the game's GUI. It can only be accessed by editing the world's [[Minecraft:Bedrock Edition level format#level.dat|level.dat]] file using external programs.<ref>[https://superflat.crackedmagnet.com/ Generate custom flat and single biome worlds on Bedrock!]</ref> This code supports every biome in the game, including [[Minecraft:Biome/Before 1.18|unused biomes]] and custom biomes if available in the world's [[Minecraft:behavior packs]].

Servers cannot create single biome worlds, but placing a single biome-enabled world in a server or [[Minecraft:Realms|Realm]] generates regular single biome world.

== Generation ==
[[File:Single Biome Comparison.jpg|thumb|Different biomes are placed on the same terrain.]]
Single biome uses a single [[Minecraft:Dimension_definition#fixed|fixed]] biome source for generating the [[Minecraft:Overworld]] with the default [[Minecraft:Custom_dimension#noise|noise generator]]. Similar to the default world type, this configuration generates a world with a bedrock floor at the Y=-64 lower height limit, and the rest of the terrain is generated on top of it. However, in contrast to the default world type, the Overworld in a single biome world consists of only one biome.

{{IN|je}}, using a biome from the Nether or the End to generate the Overworld results in a world with their structures and characteristics, albeit very incomplete. For example, [[Minecraft:warped forest]] does not generate any warped trees, but still generates partial fog, particles, and [[Minecraft:Nether fortress]]es. This is caused by a bug where the biome surface and terrain is different from their own dimension.<ref>{{bug|MC-239041||The surface in single biome worlds set to use nether or end biomes consists of grass blocks and dirt.}}</ref>

{{IN|be}}, biomes from different dimensions generate properly with all features, including the [[Minecraft:lava sea]].

In ''Bedrock Edition'', [[Minecraft:mineshaft]]s, [[Minecraft:ruined portal]]s, and [[Minecraft:stronghold]]s generate in every biome including customized. [[Minecraft:Woodland Mansion|Woodland mansions]] also generate in any vanilla [[Minecraft:cave biome]] except [[Minecraft:deep dark]].

The Nether and the End{{Only|je|short=1}} are unchanged from their Default world type counterpart. {{IN|be}}, the End generates the same End terrain but applies the selected biome and generated [[Minecraft:features]] on top of it, resulting in glitched terrain.
{{-}}

== History ==
{{HistoryTable
|{{HistoryLine|java}}
|{{HistoryLine||1.13|dev=18w16a|Added Buffet world type. At this time, the world generation options were "Overworld" and "End".}}
|{{HistoryLine|||dev=18w19a|Added the "Caves" generation option.
|Changed the "Overworld" generator option to "Surface", and changed the "End" option to "Floating Islands".
|Before this snapshot, players could change the [[Minecraft:Java Edition level format#level.dat format|level.dat]]'s {{nbt|string|generatorOptions}} tag to <code>{"biome_source":{"type":"minecraft:fixed","biomes":["minecraft:plains"]},"chunk_generator":{"type":"'''minecraft:nether'''<nowiki>"}}</nowiki></code> to create the "Caves" generation option.}}
|{{HistoryLine|||dev=pre4|Biome names are now sorted alphabetically in the Buffet menu.}}
|{{HistoryLine||1.16|dev=20w21a|The world generator types are now world type values instead of being an option in the Buffet world type.
|Renamed "Surface" generator to "Single Biome".}}
|{{HistoryLine||1.17|dev=21w06a|Cave and Floating Island worlds now generate up to y{{=}}319 and down to y{{=}}-64.}}
|{{HistoryLine|||dev=21w07a|Cave and Floating Island worlds do not generate with grimstone.}}
|{{HistoryLine|||dev=21w15a|Cave and Floating Island worlds now generate up to y{{=}}255 and down to y{{=}}0.}}
|{{HistoryLine|||dev=21w17a|Cave and Floating Island worlds now once again generate as they did prior to 21w06a.}}
|{{HistoryLine||1.18|dev=Experimental Snapshot 1|Cave and Floating Island worlds no longer generate surface features.
|Floating Island worlds no longer generate terrain properly, and terrain generated above y{{=}}~64 now generates as end stone.}}
|{{HistoryLine|||dev=21w43a|Cave worlds now generate with netherrack on the ceiling.}}
|{{HistoryLine|||dev=21w44a|Cave worlds now once again generate with a bedrock ceiling, but now generate with netherrack instead of stone, and without a surface layer.
|Floating Island worlds now generate as a single thick floating layer of end stone.}}
|{{HistoryLine|||dev=Pre-release 1|[[Minecraft:Old Buffet world generators|Removed the "Caves" and "Floating Islands"]] generation options from the world creation screen.
|Existing Cave and Floating Island worlds can still be opened, but still do not generate properly.}}
|{{HistoryLine|||dev=Pre-release 5|Cave worlds once again generate with stone and a surface layer, and now generate down to y{{=}}-64.
|Deepslate now generates in Cave worlds.
|Floating Island worlds once again generate as they did in 21w16a.}}
|{{HistoryLine|bedrock}}
|{{HistoryLine||?|Added the Single Biome world type, although it is unused and inacessible through the game's GUI.}}
|{{HistoryLine||1.18.0|dev=?|With the [[Minecraft:world generation]] changes, single biome worlds also generate differently. The terrain is now always the same as in normal worlds, depending on the [[Minecraft:world seed]], with the biome's features generating on top, instead of different terrain depending on the biome.}}
|{{HistoryLine||26.20|dev=Preview 26.20.22|It is now possible to generate single biome worlds with [[Minecraft:dripstone caves]]. This was mentioned in the changelog, however, nothing seems to have changed with dripstone caves single biome, generating normally before and after this change.}}
}}

== Issues ==
{{Issue list|Single Biome|Buffet}}

== Gallery ==
=== Screenshots ===
<gallery>
File:Meadow single biome.png|Single biome worlds allow biomes to generate on any type of terrain, while making their structures more common.
File:Warm Ocean single biome.png|Mountains in a [[Minecraft:Warm Ocean|warm ocean]] single biome world
File:Frozen Ocean single biome.png|A [[Minecraft:Frozen Ocean|frozen ocean]] single biome world creates a mess of icebergs, snow, grass, and stone.
File:Lush Caves single biome.png|A [[Minecraft:Lush Caves|lush caves]] single biome world, showing its features, including a [[Minecraft:Woodland Mansion|woodland mansion]], on the surface
File:Mountain Edge.png|A [[Minecraft:mountain edge]] single biome world. Mountain edges are only available in vanilla through single biome world generation.{{Only|be}}
File:Legacy Frozen Ocean.png|The [[Minecraft:Legacy Frozen Ocean|legacy frozen ocean]] is a similar case.
File:Crimson Forest single biome.png|A [[Minecraft:Nether]] biome generated in the Overworld using single biome {{in|be}}
File:The End single biome.png|Similar with [[Minecraft:The End (biome)|the End]]
File:Nether wastes overworld.png|A [[Minecraft:nether wastes]] biome using single biome type {{In|je}}, which fails to generate features.
File:The Void single biome.png|Similar view of [[Minecraft:The Void|the void]] single biome world
</gallery>

==== Historical screenshots ====
<gallery>
File:Borderless River.png|A river single biome world before 1.18, showing how the terrain was dependent on the biome
File:Shattered Savanna single biome pre-1.18.png|In contrast, the [[Minecraft:shattered savanna]] biome had terrain similar to amplified, ignoring the generation limits.
File:The Void single biome pre-1.18.png|Old view of [[Minecraft:The Void|the void]] single biome world.
File:Crimson Forest single biome pre-1.18.png|An old [[Minecraft:Crimson Forest|crimson forest]] single biome world, when it generated properly
File:EndHighlandsoverworldgeneration.png|The [[Minecraft:End Highlands|End highlands]] generated using the single biome generation
</gallery>

== See also ==
* [[Minecraft:Old Buffet world generators]]
* [[Minecraft:Custom]]

== References ==
{{reflist}}

== Navigation ==
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