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This section is missing information about Java Edition "default_1_1" world type. 
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World type is an option to change how worlds generate in Minecraft.

World types[]

All editions[]

Type Description Image

Default (JE)
Infinite (BE)
This is the default type of generation. Various landscapes generate utilizing Biomes. Overworld.jpg

Superflat (JE)
Flat (BE)
This type of generation creates a world that is completely flat, with its lowest layer at Y=0. In Bedrock Edition, and by default in Java Edition, the terrain consists of one layer of bedrock, two layers of dirt and one layer of grass; the surface is therefore at Y=4. Mobs spawn normally; slimes are prevalent.

in Java Edition, superflat worlds generate villages and can be further customized through the use of presets, which allow the player to change terrain layers, spawn trees, and generate larger villages, strongholds, etc.

In Bedrock Edition, structures never generate and the only customization possible is the layer organization, which can only be done with third-party tools.


Java Edition exclusive[]

Type Description Image

Generates many large mountains that dwarf even the mountains biomes seen in default world types and often reach the world height limit. Due to extremely steep cliffs and unforgiving terrain, careless players may have difficulty surviving in this world type. Certain biomes (i.e. oceans and rivers) may see no obvious change in height. Villages still spawn in this world type regardless of how flat the ground is, causing the buildings to generate in bizarre ways. AmplifiedWorldMojang.jpg

Large Biomes
Generates a default world type, but with each geographic feature 4x larger along the X and Z axis, which results in biomes with 16 times as much area. Because of this, villages, desert temples, jungle temples and other generated structures are all more likely to be found. Large Biome.png

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 can be selected by the player at the time of world creation. Single biome example: beach (fully zoomed out map resolution)

Debug Mode
A world type containing all of the block states laid out in a grid at layer y=70 for convenient viewing. It can be accessed by holding down the ALT key while cycling through the world types.

In this world type, there is a floor on y=60 made of barriers and the player cannot place or destroy blocks.

Debug World Type Flyover 14w32d.png

A JSON-driven customizable world where the generation of existing dimensions can be changed and new dimensions can be added. World-type-custom.png

Bedrock Edition exclusive[]

Nether Reactor Core BE2.png
This section describes content that has been officially made unobtainable in Bedrock Edition. 
It can still be obtained using third-party software. However, this can cause unexpected behavior such as bugs and crashes.
Type Description Image
Old This world type has a finite area of 256×256 blocks with an invisible bedrock barrier surrounding it.

Converting from old to infinite world is possible.



Java Edition Indev
0.3120100106World types have been introduced, they are officially used in Map types, map shapes and map sizes, all of which allows the player to customize how a world generates. Map themes were added in Indev 0.31 (January 7, 2010).
Java Edition Infdev
20100227-1World types no longer function.
20100327Map types, shapes and themes have now been removed.
World types have now been removed and replaced by World selections.
Java Edition Beta
?Added a world type button, which is permanently on normal and cannot be changed.
Java Edition
1.112w01aRe-added World type options, which are currently Default and Superflat.
1.3.112w19aA new world type called 'Large biomes' has now been added.
1.4.212w37aThe ability to customize the super flat world has now been added.
1.7.213w36aA new world type named 'AMPLIFIED' has now added.
1.814w17aA new world type named 'Customized' has now been added.
14w26aA new world type named 'Debug Mode' has now been added.
1.1318w06aThe customized world type has now been removed.
18w16aA new world type named buffet has now been added.
1.1620w21aThe "Single Biome", "Caves", and "Floating Islands" options are now world type values instead of being an option in the Buffet world options.
1.18Experimental Snapshot 1The Large Biomes and Amplified world types have now been removed.
Pre-release 1The "Large Biomes" and "Amplified" world types have been readded.
The "Caves" and "Floating Islands" world types have been removed.
Pocket Edition Alpha
v0.9.0build 1Added Flat world type.
Added Infinite world type.
Added Old world type option.
Bedrock Edition
1.18.0beta old world type has been removed from the world creation screen. Existing old worlds are still playable.
Legacy Console Edition
TU5CU1 1.0 Patch 11.0.1Added Superflat world type. The Nether is also flat in this world type.
TU25CU14 1.17 Added ability to customize superflat world.
CU36 1.38 Added the Amplified Terrain option.


Issues relating to "World type" are maintained on the bug tracker. Report issues there.


  • The Sky Dimension can be recreated with JSON-driven custom worlds.

See also[]