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Haven Gen Blocker

Haven Gen Blocker

MOD
Prevents blocks from the config from generating in new chunks by replacing them with another block.
by CathieNova
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152 downloads
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Updated Oct 14, 2026
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Utility & QoL World Gen
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Haven Gen Blocker

A simple mod for replacing or removing generated blocks in new chunks.

HavenGenBlocker prevents blocks from the config from generating in new chunks by replacing them with another block.

Features

  • Block Replacement: Replace generated blocks with another block.
  • Block Removal: Use minecraft:air to remove generated blocks completely.
  • Tag Support: Use block tags to replace whole groups of blocks.

Customization

Edit the config file to decide which generated blocks should be replaced.

Config file:

config/HavenGenBlocker.toml

Each entry uses this format:

from > to

The left side can be a block ID or a block tag.

The right side must be a block ID.

Default Configuration

# Blocks to replace in new chunks. Use # on the left side for block tags.
blockReplacements = [
    "minecraft:large_fern > minecraft:air"
]

HavenGenBlocker-26.1.2-1.0.0.jar
MC Client, NeoForge, Server, 26.1.2
Release 2026-06-27 Get
HavenGenBlocker-1.21.1-1.0.0.jar
MC Client, 1.21.1, NeoForge, Server
Release 2026-06-25 Get
HavenGenBlocker-1.20.1-1.0.0.jar
MC Client, 1.20.1, Forge, Server
Release 2026-06-25 Get

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