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Sylva - Worldgen Additions

Sylva - Worldgen Additions

DATA PACK
Tweaks and Additions to Minecraft's Worldgen!
by MidasDaEpik
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60 downloads
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Updated Oct 14, 2026
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Adventure ModJam 2025
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With the theme of curseforge's modjam being "The future", this project was made with the idea of how mojang could improve worldgen in the future when the average device specs is much better.

Dirt caves with roots, vines, and mushrooms generate near the surface. Surface Caves

When a cliff is too steep, stone replaces the dirt and grass. Cliffs

Granite and Diorite now generate in massive clusters instead of small patches. Granite Cave

Patches of mud now generate in dripstone caves. Dripstone Caves

On the rare occation that lush caves pierce the surface, an azalea forest may generate. Lush Caves

Sylva-v1.0.zip
MC 1.21.5, 1.21.8, 1.21.9, 1.21.7, 1.21.6
Release 2025-10-22 Get

Requirements & install

How to use this data pack in Minecraft
Mods needed
None, works in vanilla
Minecraft
1.21.5 – 1.21.9
Install folder
saves/<world>/datapacks

How to install data packs

  1. Download the data pack .zip file (do not extract it).
  2. New world: click Data Packs on the world creation screen and drop the .zip in. Existing world: open .minecraft/saves/<world>/datapacks.
  3. Put the .zip into the datapacks folder of the world (servers: world/datapacks).
  4. Run /reload in game (or rejoin the world) and check it with /datapack list.
Browse more: Data Packs for 1.21.9 All data packs

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