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Classic Customized World Generation

Brings Minecraft’s classic 1.12.2 Customized world type back to Forge 1.20.1 with 79 terrain, biome, cave, lake, ore, and structure options plus the original presets.
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Classic Customized World Generation 1.3

File namecustomizableworld-1.2.0-alpha.3.jar
Uploader
NightLa0NightLa0
Uploaded
Oct 1, 2026
Downloads
244
Size
137.0 KB
Mod Loaders
Forge
File ID
9028639
Type
R
Release
Supported game versions
  • 1.20.1
DownloadInstall Via App

Curse Maven Snippet

Forge

implementation fg.deobf("curse.maven:classic-customized-world-generation-1705244:9028639")

Learn more about Curse Maven

What's new

Customizable World — 1.2.0-alpha.3

  • Added Customized (Modern), a separate world type supporting modern terrain, caves, biomes, aquifers and normal Forge world-generation additions.
  • Improved preservation of generation settings supplied by other mods and datapacks.
  • Added Floating Islands and Caverns presets using Minecraft 1.20.1’s corresponding generators.
  • Added SortaFlat (inspired) for gently rolling terrain with biomes, caves and structures.
  • Expanded classic preset imports to support zero biome height weights, biome size 0, and river sizes 0–9.
  • Added pagination to both preset menus for smaller windows and larger GUI scales.
  • Improved switching between Classic and Modern customization and restoring settings through Re-Create.
  • Limited sea-level sliders to each world shape’s generated height.
  • Added validation to reject unsupported custom cave and terrain-height modifications safely.

This mod has no additional files