Glenn's Gases Mod 1.12.2, — Guide

Gas Types and Properties

Gases in this mod have unique properties including density (rising or sinking), visibility, and effects on the environment or players.

Gas Name	Density	Properties	Effects
Steam	Rising	Produced by water meeting lava.	Deals high contact damage; obscures vision.
Coal Dust	Sinking	Released when mining Coal Ore.	Highly explosive; causes 'Black Lung' (suffocation).
Chlorine Gas	Sinking	Greenish tint.	Toxic; rusts iron armor and tools; turns iron ore into rusted iron.
Natural Gas	Rising	Colorless/Odorless.	Flammable; found in large underground pockets.
Red Gas	Rising	Red tint.	Extremely explosive; found in deep pockets.
Nitrous Gas	Rising	Yellowish tint.	Non-explosive but dangerous; reacts with water to form Acidic Vapour.
Acidic Vapour	Sinking	Corrosive mist.	Deals rapid damage to players and entities.
Void Gas	Sinking	Dark/Black.	Found near Bedrock; causes blindness and heavy damage.
Electric Gas	Rising	Blue/Sparking.	Found in the Nether; shocks and damages nearby entities.
Corrosive Gas	Sinking	Purple tint.	Found in the Nether; slowly dissolves blocks with low hardness.
Black Damp	Sinking	Colorless.	Suffocating mixture that replaces air in low areas.
Helium	Rising	Colorless.	Suffocates players; makes mob sounds high-pitched and funny.
Iocalfaeus	Neutral	Rare gas.	Used in advanced ore refining processes.
Smoke	Rising	Grey.	Produced by fire and furnaces; causes suffocation in enclosed spaces.

The mod modifies world generation to include Gas Pockets. These are hollow spheres or clusters found deep underground (typically below Y=47).

Overworld: Contains Natural Gas, Red Gas, Chlorine, and Nitrous Gas pockets.
The Nether: Features Electric Gas and Corrosive Gas clouds.
The End: May contain Void Gas or Whispering Fog.
Bedrock Layer: Void Gas naturally generates near the bottom of the world.
Mining: Mining Coal Ore has a configurable chance to release a cloud of Coal Dust.