Toxic Sludge

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Toxic sludge is a very common liquid Material that can be found throughout the game.


Touching a sufficient amount of Toxic Sludge will stain you (or any other creature) with Effect radioactive.png Toxic, which deals 2% of max HP in damage per second, unless current HP is at or below that amount. Because it stops at =<2% HP, you will never actually be killed directly from stain damage. Toxic Immunity will prevent being damaged by this material and its stain.

Toxic sludge does not evaporate near normal fire but throwing Kiuaskivi into a pool of toxic sludge will evaporate it, creating toxic gas in the process.

It can be most easily washed off through the use of Water, but other liquids can also be used to overwrite it.

Hiisi enemies are vulnerable to toxic sludge as they take more damage from it than most enemies. They can be killed with it.


Drinking toxic sludge will cause the Effect poisoned.png Poisoned effect, gradually lowering your HP.



Toxic Sludge will bleed from these enemies.



These reactions can be used to purify Toxic Sludge into water or swamp.

Reaction Rate Reagents Products
20 Brine + Toxic Sludge Brine + Water
15 Chilly Water + Toxic Sludge + Air Chilly Water + Chilly Water
15 Mud + Toxic Sludge Mud + Swamp (Water)
5 Snow + Toxic Sludge Water + Toxic Sludge
15 Swamp + Toxic Sludge Swamp + Swamp (Water)
17 Swamp (Water) + Toxic Sludge Swamp (Water) + Swamp (Water)
15 Water (Static) + Toxic Sludge Water (Static) + Water
13 Water + Toxic Sludge Water + Water
80 Purifying Powder + Toxic Sludge (Any) Purifying Powder + Water

Toxic Ice

Reaction Rate Reagents Products
90 [fire] + [meltable_to_radioactive] [fire] + Toxic Sludge
80 [lava] + [meltable_to_radioactive] [lava] + Toxic Sludge
100 Corrupted Rock + Toxic Ice Corrupted Rock + Corrupted Rock
100 Draught of Midas + Toxic Ice Draught of Midas + Gold
50 [acid] + Toxic Ice [acid] + Flammable Gas
3 Steam + Toxic Ice Water + Toxic Ice
50 [molten_metal] + Toxic Ice Metal Dust + Toxic Ice
50 Molten Brass + Toxic Ice Brass + Toxic Ice
50 Molten Copper + Toxic Ice Copper + Toxic Ice
50 Molten Gold + Toxic Ice Gold + Toxic Ice
50 Molten Metal (Steel) + Toxic Ice Steel (Powder) + Toxic Ice
50 Molten Silver + Toxic Ice Silver + Toxic Ice
50 Molten Wax + Toxic Ice Wax + Toxic Ice


Reaction Rate Reagents Products
100 Diamond + Chaotic Polymorphine + Toxic Sludge Void Liquid + Void Liquid + Void Liquid
50 Mystery Fungus + Toxic Sludge Mystery Fungus + Mystery Fungus
50 Mystery Fungus + Toxic Sludge (Yellow) Mystery Fungus + Mystery Fungus
15 Polymorphine + Toxic Sludge Chaotic Polymorphine + Toxic Sludge
100 Toxic Sludge + Worm Blood + Weird Fungus Void Liquid + Void Liquid
100 Toxic Sludge + Sand + Fungus Blood Mystery Fungus + Mystery Fungus
100 Void Liquid + Toxic Sludge Void Liquid + Void Liquid
50 [acid] + Toxic Sludge (Any) [acid] + Flammable Gas
70 [lava] + Toxic Sludge (Any) Toxic Rock + Toxic Gas
15 Toxic Sludge (Fading) + Air Air + Air


  • Nov 5 2019: Added the [solid] tag to all variants of Toxic Ice.
  • Oct 11 2019:
    • The [impure] tag was added to radioactive_liquid, radioactive_liquid_fading, and radioactive_liquid_yellow.
    • The reactions to make Void Liquid and Mystery Fungus were added.