Single Biome

Single biome is a world type or a vanilla world preset in which the entire Overworld consists of one biome.

Single biome can be enabled in the 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.

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

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

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 level.dat file using external programs.^[1] This code supports every biome in the game, including unused biomes and custom biomes if available in the world's behavior packs.

Servers cannot create single biome worlds, but placing a single biome-enabled world in a server or Realm generates regular single biome world.

Single biome uses a single fixed biome source for generating the Overworld with the default 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 Java Edition, 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, warped forest does not generate any warped trees, but still generates partial fog, particles, and Nether fortresses. This is caused by a bug where the biome surface and terrain is different from their own dimension.^[2]

In Bedrock Edition, biomes from different dimensions generate properly with all features, including the lava sea.

In Bedrock Edition, mineshafts, ruined portals, and strongholds generate in every biome including customized. Woodland mansions also generate in any vanilla cave biome except deep dark.

The Nether and the End‌^{[JE only]} are unchanged from their Default world type counterpart. In Bedrock Edition, the End generates the same End terrain but applies the selected biome and generated features on top of it, resulting in glitched terrain.

Issues relating to "Single Biome" or "Buffet" are maintained on the bug tracker. Issues should be reported and viewed there.

• 👁 Single biome worlds allow biomes to generate on any type of terrain, while making their structures more common.
  
  Single biome worlds allow biomes to generate on any type of terrain, while making their structures more common.
• 👁 Mountains in a warm ocean single biome world
  
  Mountains in a warm ocean single biome world
• 👁 A frozen ocean single biome world creates a mess of icebergs, snow, grass, and stone.
  
  A frozen ocean single biome world creates a mess of icebergs, snow, grass, and stone.
• 👁 A lush caves single biome world, showing its features, including a woodland mansion, on the surface
  
  A lush caves single biome world, showing its features, including a woodland mansion, on the surface
• 👁 A mountain edge single biome world. Mountain edges are only available in vanilla through single biome world generation.‌[Bedrock Edition only]
  
  A mountain edge single biome world. Mountain edges are only available in vanilla through single biome world generation.‌^{[Bedrock Edition only]}
• 👁 The legacy frozen ocean is a similar case.
  
  The legacy frozen ocean is a similar case.
• 👁 A Nether biome generated in the Overworld using single biome in Bedrock Edition
  
  A Nether biome generated in the Overworld using single biome in Bedrock Edition
• 👁 Similar with the End
  
  Similar with the End
• 👁 A nether wastes biome using single biome type in Java Edition, which fails to generate features.
  
  A nether wastes biome using single biome type in Java Edition, which fails to generate features.
• 👁 Similar view of the void single biome world
  
  Similar view of the void single biome world

• 👁 A river single biome world before 1.18, showing how the terrain was dependent on the biome
  
  A river single biome world before 1.18, showing how the terrain was dependent on the biome
• 👁 In contrast, the shattered savanna biome had terrain similar to amplified, ignoring the generation limits.
  
  In contrast, the shattered savanna biome had terrain similar to amplified, ignoring the generation limits.
• 👁 Old view of the void single biome world.
  
  Old view of the void single biome world.
• 👁 An old crimson forest single biome world, when it generated properly
  
  An old crimson forest single biome world, when it generated properly
• 👁 The End highlands generated using the single biome generation
  
  The End highlands generated using the single biome generation

• Old Buffet world generators
• Custom