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This feature is exclusive to Java Edition. 

The customization screen for Buffet.

Buffet is a world type in which the entire Overworld consists of one biome (Single Biome). It is simple to customize, albeit very limited.

Generator types[]

There is one generator type as part of Buffet:

  • Single Biome: Uses the regular generation settings in Overworld: the world generates with a bedrock floor at the Y=-64 lower height limit, and the rest of the terrain is generated on top of it. However, there is only one biome in Overworld, which is selected by the player.

Custom biomes[]

Buffet world types allow the player to choose a biome that the world uses in generating terrain of Overworld. Biome choice determines things such as terrain, vegetation, generated structures (if applicable), and to some extent, mob spawning. Buffet worlds can be customized to use any one of the available biomes and use only that particular biome for the entire world. The player can choose any of the existing biomes, including technical biomes (such as different End island types).

Attempting to use custom biomes from data packs causes a crash.


Java Edition
1.1318w16aAdded Buffet world type. At this time, the world generation options were "Overworld" and "End".
18w19aAdded 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 level.dat's  generatorOptions tag to {"biome_source":{"type":"minecraft:fixed","biomes":["minecraft:plains"]},"chunk_generator":{"type":"minecraft:nether"}} to create the "Caves" generation option.
pre4Biome names are now sorted alphabetically in the Buffet menu.
1.1620w21aThe world generator types are now world type values instead of being an option in the Buffet world type.
Renamed "Surface" generator to "Single Biome".
1.1721w06aCave and Floating Island worlds now generate up to y=319 and down to y=-64.
21w07aCave and Floating Island worlds do not generate with grimstone.
21w15aCave and Floating Island worlds now generate up to y=255 and down to y=0.
21w17aCave and Floating Island worlds now once again generate as they did prior to 21w06a.
1.18Experimental Snapshot 1Cave 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.
21w43aCave worlds now generate with netherrack on the ceiling.
21w44aCave 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.
Pre-release 1Removed 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.
Pre-release 5Cave 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.


  • If the Nether or The End is used as the sole biome, then the sky would appear, as if it is a mixture of the Overworld and the dimensions.


See also[]