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VOOZH | about |
Custom is a world type that allows users to change the generation of the Overworld, Nether, and End dimensions as well as the ability to create custom dimensions. It is edited using a JSON file that is imported on the world creation screen.
To customize a world by using a JSON file, it needs to be imported before world creation:
The only way to access added dimensions is through commands, such as /execute in <dimension name> run tp @s ~ ~ ~, which teleports the player to the specified dimension (see § JSON format).
Custom generation files take the following format:
minecraft:overworld, minecraft:the_nether and minecraft:the_end are required for a well functioning world. Any other resource location is allowed for custom dimensions.
minecraft:flat for a superflat dimension, minecraft:noise for noise generation, or minecraft:debug for a debug dimension.minecraft:overworld, minecraft:the_nether, minecraft:the_end, minecraft:overworld_caves).noise, flat, or debug.
minecraft:noise, additional fields are as follows:multi_noise, fixed, checkerboard, or the_end.
type is multi_noise(3D biome generation used in the nether, and in the overworld in snapshot 21w37a and after.) , additional fields are as follows:minmintemperature.temperature.temperature.temperature.temperature.type is the_end(Biome generation used in the end with biome minecraft:the_end in the center and other end biomes around) , no additional field.type is fixed(single biome) , additional fields are as follows:type is checkerboard(A biome generation in which biomes are square (or close to square) and repeat along the diagonals) , additional fields are as follows:#, or an [NBT List / JSON Array] array containing [String] IDs) Biomes that repeat along the diagonals.minecraft:debug(used for Debug world generation) , no additional fields.minecraft:flat(used for Superflat world generation) , additional fields are as follows:
Moved to Custom world generation#Noise settings
These are the settings used by the 6 presets available for the minecraft:noise generator.
| Property | minecraft:overworld
|
minecraft:amplified
|
minecraft:nether
|
minecraft:caves
|
minecraft:end
|
minecraft:floating_islands
| ||
|---|---|---|---|---|---|---|---|---|
bedrock_roof_position
|
-10 | 0 | -10 | |||||
bedrock_floor_position
|
0 | 0 | -10 | |||||
sea_level
|
63 | 32 | 0 | |||||
disable_mob_generation
|
false | false | true | false | ||||
default_block
|
minecraft:stone
|
minecraft:netherrack
|
minecraft:stone
|
minecraft:end_stone
|
minecraft:stone
| |||
default_fluid
|
minecraft:water
|
minecraft:lava
|
minecraft:water
|
minecraft:air
|
minecraft:water
| |||
structures
|
stronghold
|
distance
|
32 | Tag not included | Tag not included | |||
count
|
1 | |||||||
spread
|
3 | |||||||
structures
|
See below | |||||||
noise
|
top_slide
|
target
|
-10 | 120 | -3000 | |||
size
|
3 | 3 | 64 | |||||
offset
|
0 | 0 | -46 | |||||
bottom_slide
|
target
|
-30 | 320 | -30 | ||||
size
|
0 | 4 | 7 | |||||
offset
|
0 | -1 | 1 | |||||
sampling
|
xz_scale
|
0.9999999814507745 | 1 | 2 | ||||
xz_factor
|
80 | 80 | 80 | |||||
y_scale
|
0.9999999814507745 | 3 | 1 | |||||
y_factor
|
160 | 60 | 160 | |||||
size_vertical
|
2 | 2 | 1 | |||||
size_horizontal
|
1 | 1 | 2 | |||||
height
|
256 | 128 | 128 | |||||
density_factor
|
1 | 0 | 0 | |||||
density_offset
|
-0.46875 | 0.019921875 | 0 | |||||
random_density_offset
|
true | false | false | |||||
simplex_surface_noise
|
true | false | true | |||||
island_noise_override
|
false | false | true | false | ||||
amplified
|
false | true | false | false | ||||
These are the default values for all namespaced structures. Every preset uses the same values for all of these structures, with the exception of minecraft:ruined_portal.
| Structure | Spacing | Separation | Salt | |
|---|---|---|---|---|
village
|
32 | 8 | 10387312 | |
desert_pyramid
|
32 | 8 | 14357617 | |
igloo
|
32 | 8 | 14357618 | |
jungle_pyramid
|
32 | 8 | 14357619 | |
swamp_hut
|
32 | 8 | 14357620 | |
pillager_outpost
|
32 | 8 | 165745296 | |
stronghold*
|
1 | 0 | 0 | |
monument
|
32 | 5 | 10387313 | |
endcity
|
20 | 11 | 10387313 | |
mansion
|
80 | 20 | 10387319 | |
buried_treasure**
|
1 | 0 | 0 | |
mineshaft**
|
1 | 0 | 0 | |
ruined_portal
|
nether and caves
|
25 | 10 | 34222645 |
| All other presets | 40 | 15 | 34222645 | |
shipwreck
|
24 | 4 | 165745295 | |
ocean_ruin
|
20 | 8 | 14357621 | |
bastion_remnant
|
27 | 4 | 30084232 | |
fortress
|
27 | 4 | 30084232 | |
nether_fossil
|
2 | 1 | 14357921 | |
*Placeholder values, have no effect
**Salt values aren't used for theses structures; changing them produces no effect
These are the default values used for each biome in the multi_noise biome_source. Interestingly, although only the values for nether biomes are accessible through a preset, several overworld biomes have default values as well.
| Biome | Temperature | Humidity | Altitude | Weirdness | Offset |
|---|---|---|---|---|---|
badlands
|
-0.25 | -0.5 | 0.5 | 0.2 | 1 |
badlands_plateau
|
-0.25 | -0.5 | 0.65 | 0.2 | 1 |
bamboo_jungle
|
0.5 | 0.5 | 0 | 0.2 | 1 |
bamboo_jungle_hills
|
0.5 | 0.5 | 0.25 | 0.2 | 1 |
basalt_deltas
|
-0.5 | 0 | 0 | 0 | 0.175 |
beach
|
0 | 0 | -0.1 | 0 | 0.9935 |
birch_forest
|
-0.1 | 0.2 | 0 | 0 | 1 |
birch_forest_hills
|
-0.1 | 0.2 | 0.25 | 0 | 1 |
crimson_forest
|
0.4 | 0 | 0 | 0 | 0 |
desert
|
0.5 | -0.5 | 0 | 0 | 1 |
jungle
|
0.5 | 0.5 | 0 | 0 | 1 |
nether_wastes
|
0 | 0 | 0 | 0 | 0 |
ocean
|
0 | 0 | -0.5 | 0 | 1 |
plains
|
0 | 0 | 0 | 0 | 1 |
snowy_tundra
|
-0.5 | -0.5 | 0 | 0 | 1 |
soul_sand_valley
|
0 | -0.5 | 0 | 0 | 0 |
warm_ocean
|
0 | 0 | -0.25 | 0 | 1 |
warped_forest
|
0 | 0.5 | 0 | 0 | 0.375 |
These are the settings used by the 3 dimensions present in Vanilla and the additional Overworld Caves settings provided by Minecraft.
| Property | Overworld | The Nether | The End | Overworld Caves |
|---|---|---|---|---|
ultrawarm
|
false | true | false | false |
natural
|
true | false | false | true |
coordinate_scale
|
1.0 | 8.0 | 1.0 | 1.0 |
piglin_safe
|
false | true | false | false |
respawn_anchor_works
|
false | true | false | false |
bed_works
|
true | false | false | true |
has_raids
|
true | false | true | true |
has_skylight
|
true | false | false | true |
has_ceiling
|
false | true | false | true |
fixed_time
|
N/A | 18000 | 6000 | N/A |
ambient_light
|
0.0 | 0.1 | 0.0 | 0.0 |
logical_height
|
256 | 128 | 256 | 256 |
infiniburn
|
infiniburn_overworld | infiniburn_nether | infiniburn_end | infiniburn_overworld |
effects
|
overworld | the_nether | the_end | overworld |
This one will change to 1.19.3-typed later.
The following is the settings for an exported default Minecraft world.
{
"bonus_chest":false,
"dimensions":{
"minecraft:overworld":{
"type":"minecraft:overworld",
"generator":{
"biome_source":{
"seed":0,
"large_biomes":false,
"type":"minecraft:vanilla_layered"
},
"seed":0,
"settings":"minecraft:overworld",
"type":"minecraft:noise"
}
},
"minecraft:the_nether":{
"type":"minecraft:the_nether",
"generator":{
"biome_source":{
"seed":0,
"preset":"minecraft:nether",
"type":"minecraft:multi_noise"
},
"seed":0,
"settings":"minecraft:nether",
"type":"minecraft:noise"
}
},
"minecraft:the_end":{
"type":"minecraft:the_end",
"generator":{
"biome_source":{
"seed":0,
"type":"minecraft:the_end"
},
"seed":0,
"settings":"minecraft:end",
"type":"minecraft:noise"
}
}
},
"seed":0,
"generate_features":true
}
This file contains the same settings used to produce a default world, but with all of the presets expanded to their default values. Note that there is a bug that makes it impossible to create the ender dragon fight without using the dimension type preset minecraft:the_end, as the flag that creates the fight is hardcoded and not accessible through JSON. However, it is otherwise identical to the default world.
{
"bonus_chest":false,
"dimensions":{
"minecraft:overworld":{
"type":{
"logical_height":256,
"infiniburn":"minecraft:infiniburn_overworld",
"effects":"minecraft:overworld",
"ambient_light":0.0,
"respawn_anchor_works":false,
"has_raids":true,
"min_y":0,
"height":256,
"natural":true,
"coordinate_scale":1.0,
"piglin_safe":false,
"bed_works":true,
"has_skylight":true,
"has_ceiling":false,
"ultrawarm":false
},
"generator":{
"biome_source":{
"seed":0,
"large_biomes":false,
"type":"minecraft:vanilla_layered"
},
"seed":0,
"settings":{
"noise_caves_enabled":false,
"deepslate_enabled":false,
"ore_veins_enabled":false,
"noodle_caves_enabled":false,
"min_surface_level":0,
"disable_mob_generation":false,
"aquifers_enabled":false,
"default_fluid":{
"Properties":{
"level":"0"
},
"Name":"minecraft:water"
},
"bedrock_roof_position":-2147483648,
"bedrock_floor_position":0,
"sea_level":63,
"structures":{
"stronghold":{
"distance":32,
"spread":3,
"count":128
},
"structures":{
"minecraft:pillager_outpost":{
"spacing":32,
"separation":8,
"salt":165745296
},
"minecraft:village":{
"spacing":32,
"separation":8,
"salt":10387312
},
"minecraft:fortress":{
"spacing":27,
"separation":4,
"salt":30084232
},
"minecraft:desert_pyramid":{
"spacing":32,
"separation":8,
"salt":14357617
},
"minecraft:bastion_remnant":{
"spacing":27,
"separation":4,
"salt":30084232
},
"minecraft:stronghold":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:monument":{
"spacing":32,
"separation":5,
"salt":10387313
},
"minecraft:swamp_hut":{
"spacing":32,
"separation":8,
"salt":14357620
},
"minecraft:endcity":{
"spacing":20,
"separation":11,
"salt":10387313
},
"minecraft:mineshaft":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:igloo":{
"spacing":32,
"separation":8,
"salt":14357618
},
"minecraft:mansion":{
"spacing":80,
"separation":20,
"salt":10387319
},
"minecraft:buried_treasure":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:ocean_ruin":{
"spacing":20,
"separation":8,
"salt":14357621
},
"minecraft:jungle_pyramid":{
"spacing":32,
"separation":8,
"salt":14357619
},
"minecraft:ruined_portal":{
"spacing":40,
"separation":15,
"salt":34222645
},
"minecraft:shipwreck":{
"spacing":24,
"separation":4,
"salt":165745295
},
"minecraft:nether_fossil":{
"spacing":2,
"separation":1,
"salt":14357921
}
}
},
"noise":{
"simplex_surface_noise":true,
"random_density_offset":true,
"size_vertical":2,
"density_factor":1.0,
"density_offset":-0.46875,
"top_slide":{
"target":-10,
"size":3,
"offset":0
},
"bottom_slide":{
"target":15,
"size":3,
"offset":0
},
"size_horizontal":1,
"min_y":0,
"height":256,
"sampling":{
"xz_scale":0.9999999814507745,
"y_scale":0.9999999814507745,
"xz_factor":80.0,
"y_factor":160.0
}
},
"default_block":{
"Name":"minecraft:stone"
}
},
"type":"minecraft:noise"
}
},
"minecraft:the_nether":{
"type":{
"logical_height":128,
"infiniburn":"minecraft:infiniburn_nether",
"effects":"minecraft:the_nether",
"ambient_light":0.1,
"respawn_anchor_works":true,
"has_raids":false,
"min_y":0,
"height":256,
"natural":false,
"coordinate_scale":8.0,
"piglin_safe":true,
"bed_works":false,
"fixed_time":18000,
"has_skylight":false,
"has_ceiling":true,
"ultrawarm":true
},
"generator":{
"biome_source":{
"humidity_noise":{
"firstOctave":-7,
"amplitudes":[
1.0,
1.0
]
},
"altitude_noise":{
"firstOctave":-7,
"amplitudes":[
1.0,
1.0
]
},
"weirdness_noise":{
"firstOctave":-7,
"amplitudes":[
1.0,
1.0
]
},
"seed":0,
"biomes":[
{
"parameters":{
"altitude":0.0,
"weirdness":0.0,
"offset":0.0,
"temperature":0.0,
"humidity":0.0
},
"biome":"minecraft:nether_wastes"
},
{
"parameters":{
"altitude":0.0,
"weirdness":0.0,
"offset":0.0,
"temperature":0.0,
"humidity":-0.5
},
"biome":"minecraft:soul_sand_valley"
},
{
"parameters":{
"altitude":0.0,
"weirdness":0.0,
"offset":0.0,
"temperature":0.4,
"humidity":0.0
},
"biome":"minecraft:crimson_forest"
},
{
"parameters":{
"altitude":0.0,
"weirdness":0.0,
"offset":0.375,
"temperature":0.0,
"humidity":0.5
},
"biome":"minecraft:warped_forest"
},
{
"parameters":{
"altitude":0.0,
"weirdness":0.0,
"offset":0.175,
"temperature":-0.5,
"humidity":0.0
},
"biome":"minecraft:basalt_deltas"
}
],
"temperature_noise":{
"firstOctave":-7,
"amplitudes":[
1.0,
1.0
]
},
"type":"minecraft:multi_noise"
},
"seed":0,
"settings":{
"noise_caves_enabled":false,
"deepslate_enabled":false,
"ore_veins_enabled":false,
"noodle_caves_enabled":false,
"min_surface_level":0,
"disable_mob_generation":false,
"aquifers_enabled":false,
"bedrock_roof_position":0,
"bedrock_floor_position":0,
"sea_level":32,
"structures":{
"structures":{
"minecraft:pillager_outpost":{
"spacing":32,
"separation":8,
"salt":165745296
},
"minecraft:village":{
"spacing":32,
"separation":8,
"salt":10387312
},
"minecraft:fortress":{
"spacing":27,
"separation":4,
"salt":30084232
},
"minecraft:desert_pyramid":{
"spacing":32,
"separation":8,
"salt":14357617
},
"minecraft:bastion_remnant":{
"spacing":27,
"separation":4,
"salt":30084232
},
"minecraft:stronghold":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:monument":{
"spacing":32,
"separation":5,
"salt":10387313
},
"minecraft:swamp_hut":{
"spacing":32,
"separation":8,
"salt":14357620
},
"minecraft:endcity":{
"spacing":20,
"separation":11,
"salt":10387313
},
"minecraft:mineshaft":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:igloo":{
"spacing":32,
"separation":8,
"salt":14357618
},
"minecraft:mansion":{
"spacing":80,
"separation":20,
"salt":10387319
},
"minecraft:buried_treasure":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:ocean_ruin":{
"spacing":20,
"separation":8,
"salt":14357621
},
"minecraft:jungle_pyramid":{
"spacing":32,
"separation":8,
"salt":14357619
},
"minecraft:ruined_portal":{
"spacing":25,
"separation":10,
"salt":34222645
},
"minecraft:shipwreck":{
"spacing":24,
"separation":4,
"salt":165745295
},
"minecraft:nether_fossil":{
"spacing":2,
"separation":1,
"salt":14357921
}
}
},
"noise":{
"density_factor":0.0,
"density_offset":0.019921875,
"simplex_surface_noise":false,
"bottom_slide":{
"target":320,
"size":4,
"offset":-1
},
"size_horizontal":1,
"size_vertical":2,
"height":128,
"sampling":{
"xz_scale":1.0,
"y_scale":3.0,
"xz_factor":80.0,
"y_factor":60.0
},
"top_slide":{
"target":120,
"size":3,
"offset":0
}
},
"default_block":{
"Name":"minecraft:netherrack"
},
"default_fluid":{
"Properties":{
"level":"0"
},
"Name":"minecraft:lava"
}
},
"type":"minecraft:noise"
}
},
"minecraft:the_end":{
"type":{
"logical_height":256,
"infiniburn":"minecraft:infiniburn_end",
"effects":"minecraft:the_end",
"ambient_light":0.0,
"respawn_anchor_works":false,
"has_raids":true,
"min_y":0,
"height":256,
"natural":false,
"coordinate_scale":1.0,
"piglin_safe":false,
"bed_works":false,
"fixed_time":6000,
"has_skylight":false,
"has_ceiling":false,
"ultrawarm":false
},
"generator":{
"biome_source":{
"seed":0,
"type":"minecraft:the_end"
},
"seed":0,
"settings":{
"noise_caves_enabled":false,
"deepslate_enabled":false,
"ore_veins_enabled":false,
"noodle_caves_enabled":false,
"min_surface_level":0,
"disable_mob_generation":true,
"aquifers_enabled":false,
"bedrock_roof_position":-2147483648,
"bedrock_floor_position":-2147483648,
"sea_level":0,
"structures":{
"structures":{
"minecraft:pillager_outpost":{
"spacing":32,
"separation":8,
"salt":165745296
},
"minecraft:village":{
"spacing":32,
"separation":8,
"salt":10387312
},
"minecraft:fortress":{
"spacing":27,
"separation":4,
"salt":30084232
},
"minecraft:desert_pyramid":{
"spacing":32,
"separation":8,
"salt":14357617
},
"minecraft:bastion_remnant":{
"spacing":27,
"separation":4,
"salt":30084232
},
"minecraft:stronghold":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:monument":{
"spacing":32,
"separation":5,
"salt":10387313
},
"minecraft:swamp_hut":{
"spacing":32,
"separation":8,
"salt":14357620
},
"minecraft:endcity":{
"spacing":20,
"separation":11,
"salt":10387313
},
"minecraft:mineshaft":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:igloo":{
"spacing":32,
"separation":8,
"salt":14357618
},
"minecraft:mansion":{
"spacing":80,
"separation":20,
"salt":10387319
},
"minecraft:buried_treasure":{
"spacing":1,
"separation":0,
"salt":0
},
"minecraft:ocean_ruin":{
"spacing":20,
"separation":8,
"salt":14357621
},
"minecraft:jungle_pyramid":{
"spacing":32,
"separation":8,
"salt":14357619
},
"minecraft:ruined_portal":{
"spacing":40,
"separation":15,
"salt":34222645
},
"minecraft:shipwreck":{
"spacing":24,
"separation":4,
"salt":165745295
},
"minecraft:nether_fossil":{
"spacing":2,
"separation":1,
"salt":14357921
}
}
},
"noise":{
"island_noise_override":true,
"density_factor":0.0,
"density_offset":0.0,
"simplex_surface_noise":true,
"bottom_slide":{
"target":-30,
"size":7,
"offset":1
},
"size_horizontal":2,
"size_vertical":1,
"height":128,
"sampling":{
"xz_scale":2.0,
"y_scale":1.0,
"xz_factor":80.0,
"y_factor":160.0
},
"top_slide":{
"target":-3000,
"size":64,
"offset":-46
}
},
"default_block":{
"Name":"minecraft:end_stone"
},
"default_fluid":{
"Name":"minecraft:air"
}
},
"type":"minecraft:noise"
}
}
},
"seed":0,
"generate_features":true
}
This dimension is a Superflat world with a layer of grass on four layers of coarse dirt on top of five layers of basalt. The entire world is full of village houses as spacing is set to 3 (default: 32) and separation is set to 1 (default: 8). The world starts by default at time 1000.
dimension object data{
"generator":{
"settings":{
"structures":{
"structures":{
"minecraft:village":{
"spacing":3,
"separation":1,
"salt":10387312
}
}
},
"layers":[
{
"height":5,
"block":"minecraft:basalt"
},
{
"height":4,
"block":"minecraft:coarse_dirt"
},
{
"height":1,
"block":"minecraft:grass_block"
}
],
"biome":"minecraft:plains"
},
"type":"minecraft:flat"
},
"type":{
"ultrawarm":false,
"natural":true,
"coordinate_scale":1.0,
"ambient_light":0.5,
"fixed_time":1000,
"has_skylight":true,
"has_ceiling":false
}
}
| Java Edition | |||||||
|---|---|---|---|---|---|---|---|
| May 15, 2018 | The return of customized worlds was mentioned.[1][2][3] | ||||||
| 1.16 | 20w21a | Added custom worlds. | |||||
| Custom worlds are JSON-driven. | |||||||
| Custom dimensions can be added and vanilla dimensions can be modified. | |||||||
| There is currently no in-game menu to modify worlds; custom worlds can be generated only by importing a JSON file. | |||||||
| pre1 | The "temparature" biome parameter is now spelled "temperature". | ||||||
| Dimensions and dimension settings can be created through data packs. | |||||||
| 1.16.2 | 20w28a | Experimental custom biome support is now included in custom worlds. | |||||
| 1.17 | 20w49a | Max build heights and bedrock ceiling heights are now customizable over 256 blocks via custom json files. | |||||
| 21w05a | Minimum and maximum y values changed from -2047 and 2047 to -2032 and 2032. | ||||||
| 1.19.4 | 23w05a | Removed the "Import Settings" and "Export Settings" buttons in the "Edit World" screen, making it impossible to access custom worlds through JSON files. | |||||
Issues relating to "Custom" are maintained on the bug tracker. Issues should be reported and viewed there.
| Environment | |||||||
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| Geography | |||||||
| Weather | |||||||
| Dimensions | |||||||
| World types |
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| Player constructions |
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| Matter | |||||||
| Sound | |||||||
| Joke |
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| Bugs |
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| Removed |
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