Cold Sludge is a Fluid in Where's My Perry?, first appearing in The Puppetmaster.
- Cold Sludge has a normal consistency in terms of movement. It behaves the same as Water, Sludge and Hot Sludge. Cold Sludge will cause any level to fail, and kill all types of Gnomes.
- Reactions with Fluids
- If mixed with Water, the Water will become Ice. The Cold Sludge will be consumed.
- If mixed with Steam, the Steam will become Water. The Cold Sludge will be consumed.
- If mixed with Sludge, the Sludge becomes Cold Sludge.
- If mixed with Hot Sludge, the two form an explosion. A minimum of one drop of each fluid is required for this two happen. Both fluids will be consumed. The more drops present the larger the explosion.
- Notable Reactions with Objects