Huge Nightmare Sludge
106M diamondsExclusive#823 most valuable9,183 exist
Huge Nightmare Sludge is currently valued at 106M diamonds in Pet Simulator 99, making it the #823 most valuable tracked item. It is an Exclusive item. Values reflect trader consensus as of 1 November 2026. Before you accept any offer for Huge Nightmare Sludge, run both sides through the WFL calculator. A fair trade lands within about 10% of even.
Huge Nightmare Sludge value by variant
Recent average price for each version, with how many copies exist. Rarer variants trade well above the normal pet:
| Variant | Value | Exist |
|---|---|---|
| Normal | 106M diamonds | 9,183 |
| Rainbow | 557M diamonds | 500 |
| Shiny | 885M diamonds | 148 |
| Shiny Rainbow | 4.67B diamonds | 50 |
Fair trades for Huge Nightmare Sludge
Items worth about the same, one-for-one swaps with these are close to fair:
| Item | Value | Rarity | Demand |
|---|---|---|---|
 Huge Masked Fox | 121M diamonds | Exclusive | – |
 Huge Devil Dominus | 120M diamonds | Exclusive | – |
 Huge Raptor | 118M diamonds | Exclusive | – |
 Huge Pixel Tiger | 116M diamonds | Exclusive | – |
 Huge Chad Elephant | 115M diamonds | Exclusive | – |
 Huge Prison Cow | 113M diamonds | Exclusive | – |