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True Gas Mask Addon for Minecraft 1.21.120

danger in the underground. adds the toxin mechanic in the overworld that means the player cannot go down without a gas mask to search for ores

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Updated
Updated 18.10.2026
  • 1.21.114 — 1.21.120

NEW!! Y=18 🩻🩻

From layer 18 onwards the environment is harmful to the player, he will lose 3 life every one second. lethal enough mind to finish off the player. Craft a gas mask to be able to explore the depths more safely and obtain what you are looking for.

-Netherite Gas Mask

True Gas Mask — screenshot 2

-New textures added

-Water block and water breathing

Being in the water while holding your breath eliminates damage over time from being in the depths, the water breathing effect makes you immune to damage while it is active

True Gas Mask — screenshot 3
True Gas Mask — screenshot 4

-TOXIC NETHER

The Nether is completely contaminated, the use of a gas mask is necessary BUT the lethality is not that high you can last much longer without a gas mask

True Gas Mask — screenshot 5
True Gas Mask — screenshot 6

Diamond Gas Mask

True Gas Mask — screenshot 7
True Gas Mask — screenshot 8

Iron Gas Mask

True Gas Mask — screenshot 9
True Gas Mask — screenshot 10

Gas Mask

True Gas Mask — screenshot 11

Versions

MinecraftLoaderFileDateActions
1.21.114—[NEW!!] Gas Mask [RP] v1.5.298.7 KB

FAQ

Which Minecraft versions does True Gas Mask work on?

There are files for 1.21.120, 1.21.114. The newest is 1.21.120.

Where can I download True Gas Mask safely?

On this page: the file Gas Mask [RP] v1.5.2.mcpack (99 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 83b15afa7b6089282da88a98d2f7e8a9f699d1c1.

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