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Revision as of 10:54, 16 April 2018

A Superflat world.

Superflat (Flat in Bedrock Edition and New Nintendo 3DS Edition) is a world type replacing the normal varied terrain of the Overworld, with customizable layers in the Java and Legacy Console Editions.

Structure

In a classic (default) Superflat world, the terrain consists of one layer of bedrock, two layers of dirt, and one layer of grass. Since the entire world is a plains biome by default, villages will generate relatively frequently. In Bedrock Edition and New Nintendo 3DS Edition, however, villages will not generate in Flat worlds.

The surface of the world is completely flat and at height y=4, with the exception of villages and other structures if they are enabled. Since the height limit (256) is unchanged, there is almost one-third more vertical height available to build above-ground structures as compared to a normal world. Mobs will spawn as normal. Because of the low altitude of the world, slimes spawn fairly frequently.

When making a Superflat world, the player will spawn on the topmost solid layer, within a 20x20 cube, and may spawn under water or lava if there are layers of those above the topmost solid layer.

File:Nether superflat.png

Superflat version of the Nether in the Legacy Console Edition

Access to other dimensions

Superflat worlds allow the player to access the Nether by building a nether portal in the usual way. In Java Edition, Bedrock Edition, and New Nintendo 3DS Edition, the Nether generates normally; in Legacy Console Edition the Nether is flat like the Overworld.

Java and Console Edition Superflat worlds also allow the player to access the End, which generates as in a normal world, by finding a stronghold or by creating an end portal in Creative Mode.

Multiplayer

In order to create a Superflat world in a multiplayer server, the level-type flag in server.properties must be FLAT, instead of DEFAULT.

Once a multiplayer world is created, the server.properties fields have no effect on chunk generation. Instead, just like in singleplayer, the level.dat fields for generatorName, generatorVersion, and generatorOptions are used instead. If you want to alter a world after initial creation, these are the settings to change.

Customization

In Java and Console Editions, the structure and content of a Superflat world can be customized. Flat world customization is not available for Bedrock Edition; it always consists of a layer of bedrock, two layers of dirt, and a layer of grass (even when the Seed Picker is used).

Upon selecting "Superflat" in the World Type box, a new button appears underneath labeled "Customize". The customize menu starts out with the "Classic Flat" preset of one layer of grass, two dirt layers, and then bedrock underneath. There are two buttons available to customize Superflat worlds, which include the "Remove Layer" button, used for removing unwanted types of layers, and the "Presets" button, used for selecting any of eight currently available presets.

If you can understand the preset code syntax you can create presets of your own by entering valid information into the preset code box, where these changes can be previewed and applied. (Direct Customization is not available.) In addition, superflat worlds can have certain terrain features, besides villages, such as tall grass, lakes, and strongholds, which can additionally be customized using the same code box for block layers. These changes also made tweaks to previous world codes, to include the new generation features.

Presets are shareable. As a preset is selected, a box on top of the screen has a code you are able to highlight and copy. Similar to how new worlds are shared through seeds, presets can be entered into this box to recreate someone else's preset.

Presets

Preset Layers Biome Structures Notes Preset code
 Classic Flat 1x
2x
1x
Grass Block
Dirt
Bedrock
Plains Villages Default

3;minecraft:bedrock,2*minecraft:dirt,minecraft:grass;1;village[upcoming] minecraft:bedrock,2*minecraft:dirt,minecraft:grass;1;village

[upcoming: 1.13]
 Tunneler's Dream 1x
5x
230x
1x
Grass Block
Dirt
Stone
Bedrock
Extreme Hills Strongholds
Dungeons
Abandoned Mineshafts

3;minecraft:bedrock,230*minecraft:stone,5*minecraft:dirt,minecraft:grass;3;stronghold,biome_1,decoration,dungeon,mineshaft [upcoming] minecraft:bedrock,230*minecraft:stone,5*minecraft:dirt,minecraft:grass;3;stronghold,biome_1,decoration,dungeon,mineshaft

[upcoming: 1.13]
 Water World 90x
5x
5x
5x
1x
Water
Sand
Dirt
Stone
Bedrock
Deep Ocean Ocean monuments

3;minecraft:bedrock,5*minecraft:stone,5*minecraft:dirt,5*minecraft:sand,90*minecraft:water;24;biome_1,oceanmonument [upcoming] minecraft:bedrock,5*minecraft:stone,5*minecraft:dirt,5*minecraft:sand,90*minecraft:water;24;biome_1,oceanmonument

[upcoming: 1.13]
 Overworld 1x
3x
59x
1x
Grass Block
Dirt
Stone
Bedrock
Plains Strongholds
Villages
Dungeons
Abandoned Mineshafts
Mimics the height of default world generation.

3;minecraft:bedrock,59*minecraft:stone,3*minecraft:dirt,minecraft:grass;1;stronghold,biome_1,village,decoration,dungeon,lake,mineshaft,lava_lake [upcoming] minecraft:bedrock,59*minecraft:stone,3*minecraft:dirt,minecraft:grass;1;stronghold,biome_1,village,decoration,dungeon,lake,mineshaft,lava_lake

[upcoming: 1.13]
 Snowy Kingdom 1x
1x
3x
59x
1x
Snow (layer)
Grass Block
Dirt
Stone
Bedrock
Ice Plains Igloos Villages won't generate as the biome is ice plains.

3;minecraft:bedrock,59*minecraft:stone,3*minecraft:dirt,minecraft:grass,minecraft:snow_layer;12;biome_1,village [upcoming] minecraft:bedrock,59*minecraft:stone,3*minecraft:dirt,minecraft:grass,minecraft:snow_layer;12;biome_1,village

[upcoming: 1.13]
 Bottomless Pit 1x
3x
2x
Grass Block
Dirt
Cobblestone
Plains Villages Allows Survival access to the Void, due to the replacement of bedrock with cobblestone.

3;2*minecraft:cobblestone,3*minecraft:dirt,minecraft:grass;1;biome_1,village [upcoming] 2*minecraft:cobblestone,3*minecraft:dirt,minecraft:grass;1;biome_1,village

[upcoming: 1.13]
 Desert 8x
52x
3x
1x
Sand
Sandstone
Stone
Bedrock
Desert Strongholds
Desert Villages
Desert Temples
Dungeons
Abandoned Mineshafts
Sandstone and Stone layer amounts are reversed from Default worlds due to MC-105285.

3;minecraft:bedrock,3*minecraft:stone,52*minecraft:sandstone,8*minecraft:sand;2;stronghold,biome_1,village,decoration,dungeon,mineshaft [upcoming] minecraft:bedrock,3*minecraft:stone,52*minecraft:sandstone,8*minecraft:sand;2;stronghold,biome_1,village,decoration,dungeon,mineshaft

[upcoming: 1.13]
 Redstone Ready 52x
3x
1x
Sandstone
Stone
Bedrock
Desert None

3;minecraft:bedrock,3*minecraft:stone,52*minecraft:sandstone;2; [upcoming] minecraft:bedrock,3*minecraft:stone,52*minecraft:sandstone;2;

[upcoming: 1.13]
 The Void 1x Air The Void None Spawns the player on a stone platform, due to falling into the void when playing in survival mode.

3;minecraft:air;127;decoration;2; [upcoming] minecraft:air;127;decoration;2;

[upcoming: 1.13]

Preset code format

The preset code is a string of numbers, semicolons(;), colons(:), commas(,), and asterisks(*). Each code has four (three in [[Template:1.13]]‌[upcoming]) main parts, divided by semicolons. They are:

  • a version number,‌[upcoming] which is used to allow preset codes to be shared even if the code format changes.
  • a list of one or more block IDs.
    • The block list is a comma-separated list of block IDs, ordered from layer 0 up; if the entry for a given block has an "*", the number before the "*" is the number of layers to be generated, and the number after is the block ID.
    • A block ID can be followed by a colon to specify a damage value.
    • A block can also be repeated over multiple layers simply by repeating the block's ID, e.g. minecraft:glass,minecraft:glass,minecraft:glass,minecraft:glass would give the same result as 4*minecraft:glass.
    • To specify block variants, such as Polished Andesite (Stone ID 6), use a colon after the block's ID, like so: minecraft:stone:6.
  • a valid biome ID
  • (optional) a list of structure generation options
    • Structure generation options (described below) may have additional parameters, for example "village(size=0 distance=9)". The order in which they are specified may alter the results where they overlap or are incompatible.[1]
    • It is important to remember that multiple parameters are separated by spaces, rather than commas or semicolons.

Structure generation options

Structure generation option Parameters Description Biome
village size
distance
Generates villages, provided they exist in that biome type. Extremely large size values and low distance values will generate many villages tightly grouped together
size determines the size of the village (default is 1, normal worlds have this set to 0, maximum is 65535).
distance is the maximum distance between villages (minimum is 9, default is 32).
Plains,
Desert,
Savanna,
Taiga
mineshaft chance Generates abandoned mineshafts. Note that they will generate in midair if no terrain is present to cover them.
chance determines how common mineshafts are (from 0.0 to 1.0, default is 0.01). Higher number, more common.
All
stronghold distance
count
spread
Generates strongholds.
distance determines how far strongholds are from the spawn and other strongholds (minimum is 1.0, default is 32.0).
count is the number of strongholds that exist per world (default is 3).
spread determines how concentrated strongholds are around the spawn (minimum is 1, default is 3). Lower number, lower concentration.
All
biome_1 distance Generates biome-specific features. This enables igloos, desert temples, jungle temples, or witch huts.
distance for the maximum distance between features (minimum is 9, default is 32).
Ice Plains,
Desert (Hills),
Jungle (Hills),
Swampland
(Not Swampland M)
dungeon None Dungeons will be generated, if possible. All
decoration None Causes plants, ores, and similar features to be generated according to the biome type. Stone, dirt, grass, sand, or mycelium are required for most features. All
lake None Generates water lakes, sometimes with sand and sugar cane depending on biome. All
lava_lake None Generates lava lakes, with stone surrounding them. If all stone layers are removed in a preset that enables lava lakes, ores can generate in the stone around lava lakes, given the proper altitude. All
oceanmonument spacing
separation
Generates ocean monuments in the water.
spacing determines the size of the grid, in chunks, on which monuments are generated (minimum is 1, default is 32).
separation determines the minimum distance, in chunks, between monuments. (minimum is 1, default is 5).
WARNING: spacing must be greater than separation otherwise the game will crash.
Deep Ocean

Conditions

Note that there are several criteria that must be satisfied before some features can appear:

  • The biome number must be correct. For example, at present villages can only appear in biome numbers 1, 2, 5, and 35, plains, desert, taiga, and savanna.
  • The correct structure code ('village', 'dungeon' etc.) must be present in the superflat string.
  • Structures must be turned on in the world settings. (This does not affect 'natural' objects such as trees, flowers, mushrooms, and giant mushrooms. Obsidian pillars in the End also count as 'natural'.)
  • There must be suitable terrain for the structure to appear on or in. This applies to most features except for mineshafts and strongholds.
    • Villages are a partial exception; they will not form in mid-air, but will form provided there is at least one solid block layer.
      • Villages will always spawn at least 2 blocks above the void.

For example, to have an 'End' superflat world with obsidian pillars, the biome number must be 9, the superflat string must contain 'decoration', and the top surface block must be End Stone. In this particular case 'Structures' does not need to be turned on in the world options.

Attempting to use an incorrectly formatted preset code causes the game to default to the Classic preset.

Preset code example

Consider the following preset code: 3;minecraft:mossy_cobblestone,250*minecraft:air,minecraft:obsidian,minecraft:snow_layer;3;stronghold(count=7),village(size=0 distance=9),decoration,dungeon,mineshaft[upcoming] or: minecraft:mossy_cobblestone,250*minecraft:air,minecraft:obsidian,minecraft:snow_layer;3;stronghold(count=7),village(size=0 distance=9),decoration,dungeon,mineshaft[upcoming: 1.13]

It consists of the following elements:

  • 3 — version number.‌[upcoming]
  • minecraft:mossy_cobblestone,250*minecraft:air,minecraft:obsidian,minecraft:snow_layer — comma-separated list of block IDs.
    • minecraft:mossy_cobblestone — one layer of moss stone on layer 0.
    • 250*minecraft:air — 250 layers of air, from layer 1 to layer 250.
    • minecraft:obsidian — one layer of obsidian, on layer 251.
    • minecraft:snow_layer — one layer of snow, on layer 252.
  • 3biome ID, in this case Extreme Hills.
  • stronghold(count=7),village(size=0 distance=9),decoration,dungeon,mineshaft — a comma-separated list of structures.
    • stronghold(count=7) — this will populate the world with seven strongholds at the default distance and spread.
    • village(size=0 distance=9) — since Extreme Hills is an invalid biome for villages, this will do nothing.
    • decoration — biome-specific decoration.
    • dungeon — allows dungeons to generate.
    • mineshaft — allows abandoned mineshafts to generate at the default placement frequency.

Resources

The resources below can always be found, regardless of the "Generate Structures" option.

NameResource location
??
??
??
??

The resources below can only be found if the "Generate Structures" option is enabled. These do not include resources that can be obtained via trading with villagers and fishing.

NameResource location
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??
??

Village chests may contain these items:

NameResource location
??
??
??
??
??
??
??
??
??
??
??
??
??
??

Video

Superflat/video

History

pre-classic
rd-132211The level generation was changed from the original messy and random generator (as shown in the Cave Game "Tech Test video"), to be completely flat. This was later removed in favor of variable terrain.
release
1.1January 4, 2012Jeb announces a "super-flat world type option" and shares a first screenshot.
12w01aAdded Superflat world type.
1.3.1?Prior to 1.3.1, there was no consistent spawn point unless the player had slept in a bed; the player could respawn far from the previous spawning location without anything in sight. This may have been due to the lack of ground at the usual height of about 64.
12w25aSlime spawning in Superflat is reduced.
1.4.212w36aBy going into the level.dat and editing the generatorOptions line, the player can create custom Superflat worlds.
September 10, 2012Dinnerbone mentions that he is adding presets to go with the new customization feature.
12w37aAdded Superflat Customization GUI.
Comes with 7 presets: Classic Flat, Tunnelers' Dream, Water World, Overworld, Snowy Kingdom, Bottomless Pit (Broken in this version), and Desert.
In this version, the Add and Edit Layer features were not fully implemented, leaving their respective buttons grayed out.
12w39bThe "Bottomless Pit" preset is fixed.
October 2, 2012Dinnerbone tweets an image of trees naturally generating in superflat worlds.
12w40aGenerated structures (trees, ores, strongholds, etc.) can now be generated in this mode. The preset code version number is changed to "2" to reflect this.
Added a new preset called "Redstone Ready", with 52 layers of sandstone, three stone, then one layer of bedrock, and has no generated features or structures.
The "Add Layer" and the "Edit Layer" buttons were removed.
1.5.2At some point, changes to server.properties stopped being looked at in SMP after the world was created. Equivalently, any data in the level.dat file overrides the values in server.properties. This means that single player worlds can now be trivially moved to SMP. While confirmed in 1.5.2, this probably happened much earlier.
1.7.213w36aStrongholds are no longer generated in the air.
1.814w08aNow uses named block IDs to input layers instead of numeric block IDs.[2]
Block ID/number of layers format changed from NumberxID to Number*ID.
Preset code version number changed to "3".
1.915w37aAdded a new preset called "The Void", where terrain is nonexistent except for a stone platform at the spawn.
upcoming
1.1317w47aSupport for version numbers in preset codes was dropped.[3]
Pocket Edition Alpha
0.9.0build 1Added flat world type.
Legacy Console Edition
TU5CU1 1.0 Patch 1Added superflat world type. Unlike in other editions, the Nether is also flat in this world type.
TU25CU14 1.17 Added Superflat Customization UI.

Issues

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

Trivia

  • The volume of an entire default superflat world, not including villages, bonus chests, or air, is 14.4 million km3, and the world is composed of 1.44x1016 blocks.
  • Since cloud height isn't affected by the world generation, clouds will be underground in the Tunneler's Dream preset.
  • If you select the desert preset, and remove all layers but sand, it is possible to create a massive, endless wave of falling sand. All one has to do to accomplish this computer-breaking feat is dig straight down until you hit the bottom of the world. The sand will then begin to fall from where you dug.

Gallery

See also

References

  1. MC-77307
  2. https://mojang.com/2014/02/minecraft-snapshot-14w08a/
  3. MC-123228, "Superflat generator strings no longer contain generator version" resolved "Working As Intended"
  4. https://twitter.com/jeb_/status/157390390788489216