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Flatland

A Superflat world.

Superflat (sometimes called Flatlands) is a world type replacing the normal varied terrain of the Overworld with a thin flat layer of dirt.

The terrain consists of one layer of bedrock, two layers of dirt, and one layer of grass; the surface of the world is completely flat and at height y = 4, with the exception of NPC villages. Since the height limit (256) is unchanged, there is then slightly less than one-third more vertical height available to build above-ground structures as compared to a normal world. Mobs spawn as normal, including Slimes; however, there is no “Void Fog” as would ordinarily be caused by being close to the bottom, even for areas that are completely shielded from sunlight, whether in Survival or Creative mode.

Because of there being chests in villages, and villages frequently spawning near the spawn point, it is possible to use Superflat as a challenge map. However, the high amount of slimes makes this extremely difficult to an inexperienced player.

The Nether and the End generate normally; they are not flat, although there is no possible way for the player to travel to the end in superflat without using creative mode or a mod, as there are no Strongholds. In order to create a Superflat world in SMP, the level-type flag in server.properties must be "FLAT", instead of "DEFAULT".

Customization

In 12w37a, customization options were added to the world creation screen. Upon selecting "Superflat" in the World Type box, a new button appears underneath called "Customize". The customize menu starts out with the "Classic Flat" preset of one layer of grass, two dirt layers, and then bedrock underneath. Three buttons, 'Add Layer', 'Edit Layer', and 'Remove Layer', allow you to completely change the world, including filling all 256 layers with block types of your choosing. Currently (as of 12w37a) the add and edit options are marked 'NYI', to show they are not yet implemented. There are seven presets available, and provided you can understand the layer syntax you can still create presets of your own by entering the correct block IDs into the 'preset code box'.

Preset Description (from surface downwards)
Classic Flat Default; one layer of grass, two layers of dirt, then a layer of bedrock.
Tunnelers' Dream One layer of grass, five layers of dirt, 230 layers of stone and then a layer of bedrock.
Water World 90 layers of water, five sand, five dirt, five stone, and then one layer of bedrock.
Overworld Similar build to Tunnelers' Dream, except 59 layers of stone and three of dirt. This is to mimic the height of default world generation.
Snowy Kingdom Same as Overworld, but with a layer of snow on top.
Bottomless Pit This option currently has an error.[1] The current settings are exactly like Classic Flat, but the bottom layer was supposed to be cobblestone, not bedrock. (Image showing correct layers) You can correct the preset by manually entering a layer generation code of 1;4,2x3,2;1.
Desert Eight layers of sand, 52 sandstone, three stone, then one layer of bedrock.

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. Information on the syntax of the presets will follow.

History

r
12w01aAdded Superflat world type.
12w25aSlime spawning in Superflat is reduced.
1.3.1Prior 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.
u
12w36aEditing a specific part of your level.dat can give you a customized Superflat world.[citation needed]
12w37aAdded customization options.

Resources that can be found in Superflat world

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

Icon Dec Hex Block type
00 00 Air
Grass 02 2 Grass
Dirt 03 3 Dirt
Bedrock 07 07 Bedrock

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

Icon Dec Hex Block type
Cobblestone 04 4 Cobblestone
File:Wooden Plank.png 05 5 Wooden Planks
Water 09 9 Stationary water
Lava 11 B Stationary lava
Gravel 13 D Gravel
File:Wood.png 17 11 Wood
Black Wool 35 23 Wool
File:Double Stone Slab.png 43 2B Double Stone Slabs
Stone Slab 44 2C Stone Slabs
Bookshelf 47 2F Bookshelf
Torch 50 32 Torch
File:Wooden Stairs.png 53 35 Wooden Stairs
Chest 54 36 Chest
Crafting Table 58 3A Crafting Table
File:Crops.png 59 3B Wheat Seeds
Farmland 60 3C Farmland
Furnace 61 3D Furnace
File:Wooden Door.png 64 40 Wooden Door
File:Ladders.png 65 41 Ladder
Cobblestone Stairs 67 43 Cobblestone Stairs
File:Wooden Pressure Plate.png 72 48 Wooden Pressure Plate
File:Fence.png 85 55 Fence
Iron Bars 101 65 Iron Bars
Glass Pane 102 66 Glass Pane

Village chests may contain these items:

Icon Dec Hex Block type
Sapling 6 06 Sapling
Obsidian 49 31 Obsidian
257 101 Iron Pickaxe
260 104 Red Apple
File:Diamond (Gem).png 264 108 Diamond
File:Ironitm.png 265 109 Iron Ingot
File:Golditm.png 266 10A Gold Ingot
267 10B Iron Sword
297 129 Bread
306 132 Iron Helmet
307 133 Iron Chestplate
308 134 Iron Leggings
309 135 Iron Boots

Bugs

  • If the player breaks the Bedrock barrier, the player can see that the Void has the same color of the sky while the player is above y=0, but looks normal (black) when the player is below y=0.
  • Superflat worlds may contain chunk errors that will generate default worlds.
  • If you overwrite a Superflat world with a default world of the same name, some chunks (and sometimes massive areas) may remain Superflat, though the grass color will change with the biome.
  • Water World spawns you on top of the dirt layer, making Survival impossible in a new world. Workarounds are either spawning in Creative and flying up, or editing the save files after world creation to move spawn.

Trivia

  • The volume of an entire Classic Flat world, not including villages, bonus chests, or air, is 3.6 million km3, and the world is composed of 3,600,000,000,000,000 blocks.
  • NPC Villages seem to spawn more frequently on Superflat worlds than normal worlds, due to the fact that the entire world generates as a Plains biome.
  • Before 12w25a, Slimes spawn in huge numbers in Superflat because they are only four blocks away from the bedrock layer.
  • In creative, if one digs through bedrock in the right place but does NOT fall in, the moon/sun can be observed at noon/midnight respectively.
  • Even though air layers cannot be added by typing 0, you can add them by typing an item ID.

Gallery

References

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