This mod allows for (almost) unlimited world height and depth, by dynamically loading vertical sections of the world, just like Minecraft does in horizontal direction.

WARNING: This mod WILL break many other mods in hard to predict ways. Most of the incompatibilities cannot be fixed without changes to other mods. Incompatibility list on CurseForge only contains known mods that appear to work flawlessly but are likely to corrupt your world!


Versions 1.10.2-0.0.871.0, 1.11.2-0.0.856.0 and 1.12.2-0.0.852.0 contain CubicWorldGen sub-mod. All newer versions need CubicWorldGen installed separately if you want Cubic Chunks world generators.


Mod compatibility

NOT COMPATIBLE WITH MCEDIT, WORLDEDIT, SPONGE or BUKKIT/SPIGOT. NBTExplorer will not be able to edit Cubic Chunks region files.

There are special compatibility tweaks for OptiFine included. Supported optifine versions are:

  • 1.12.2: E2, except CubicChunks 1.12.2-0.0.852, works only with C7-C9, has unfinished support for D1
  • 1.11.2: C7
  • 1.10.2: E7

A plugin for WorldPainter will be available soon.


Other than that, many mods are likely to break in unpredictable way. Use with other mods at your own risk. Report all compatibility issues to Cubic Chunks, NOT to other mods, even if this is incompatibility with new MinecraftForge version. Unofficial community maintained compatibility list can be found on Cubic Chunks wiki pages.

Versions 1.10.2-0.0.871.0, 1.11.2-0.0.856.0 and 1.12.2-0.0.852.0  may  be compatible with some additional mods that don't work with newer versions, in case a mod was made to be compatible with this older version.

Creating Cubic Chunks world

To create a Cubic Chunks world for the first time, you need to select "more world options" and enable Cubic Chunks in that menu. This will be remembered for future worlds, and saved in config.

For CubicWorldGen world types, you don't need to enable that option, it will always generate a Cubic Chunks world.

Note: on the first load, your build height may be still limited to 256 blocks. This should fix itself once the world is reloaded. This is a known bug.


For servers you need to set forceCubicChunks option to true in cubicchunks.cfg config file.

Note: don't forget to change max build height in if it's from vanilla.

"I accidentally loaded my Cubic Chunks world without Cubic Chunks"

All damage caused by this is generally recoverable, unless you die and lose your items (which is very likely). To do that, you just need NBTExplorer, and open level.dat file. In "Data" section, change the generatorName tag to your world type (CustomCubic or FlatCubic if it's CubicWorldGen world), and set isCubicWorld value to 1 (create it if it doesn't exist, data type should be byte). Once this is done, your world should load as a Cubic Chunks world again. For CustomCubic and FlatCubic world you may also need to put your preset configuration back into NBT, in case it has been deleted by Minecraft.


Cubic Chunks has a discord server that you can join. If you have any issues, you can ask there.


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About This Project

  • Project ID
  • Created
    Apr 15, 2018
  • Last Released File
    Feb 12, 2019
  • Total Downloads
  • License