Osseous ash

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osseous ash
Osseous ash
Inhaled?Whether this gas is


Seeping?Whether this gas can
seep through walls



ID?Use this ID to Wish for the item


Spawns in


osseous ash

Bone bits are aerosolized into a thick coal fog. Light is lost inside.


Osseous ash is a type of gas that deals damage to creatures capable of respiration. It is produced when grave moss burns.[1]

Creatures capable of respiration who occupy the same tile as a cloud of osseous ash will take damage every round based on the cloud's density, where damage is equal to Density / 10.[2]

Such creatures who enter a cloud of osseous ash will also be afflicted with the choking on ash status condition. Upon exiting the cloud, the creature will suffer ♥2 damage every round for 1-10 rounds, so long as the tile they occupy at the end of their turn does not contain osseous ash.[3]

Osseous ash also has the potential to be occluding, which is a unique quality among gases. Whenever osseous ash has a density of 40 units or greater in a particular tile, it will become occluding and block the vision of the player and other creatures.[2]


  1. ObjectBlueprints.xml
  2. 2.0 2.1 XRL.World.Parts.GasAsh
  3. XRL.World.Effects.AshPoison