PokeBonk Black Sludge
Item · last checked 2026-10-20
PokeBonk Black Sludge is a rare chest item: +2 regen. Your poisons last 25% longer and deal +20% damage. You find it in Poke Ball chests and Meowth's shop during a run, and you can hold up to 10 copies. It is not in the item pool at first: poison 400 pokemon to unlock it, then buy it for 400 Stardust.
Black Sludge at a glance
| Rarity | Rare |
| Effect | +2 regen. Your poisons last 25% longer and deal +20% damage. |
| Max copies | 10 |
| Unlock | Poison 400 Pokemon. Then 400 Stardust. |
| At max copies | +20 regen and +200% status damage |
What Black Sludge does in PokeBonk
+2 regen. Your poisons last 25% longer and deal +20% damage. Each extra copy adds the same bonus again, up to 10. Since version 0.5.3 bonuses of the same kind add together instead of multiplying, so 10 copies give +20 regen and +200% status damage.
Items work on every move you carry, whatever its shape, unless the effect names a shape or a type. The pause screen shows each move's damage per second, so you can check what Black Sludge adds mid-run.
How to get Black Sludge
Chests are Poke Balls you buy with PokeDollars during a run; each one costs more than the last. A paid Poke Ball lets you pick one of three items, Great Balls from challenge altars and guardians are free, and Meowth's shop sells four offers at a time. Rare items are rare early in a run: their odds rise with your player level, your luck and the zone you are in, so luck and later zones help.
Black Sludge is one of the 35 items you must unlock: poison 400 pokemon. Then buy it in the Lab for 400 Stardust. The PokeBonk Stardust guide lists the cheapest unlocks first.
Other rare items
Black Sludge competes with these rare items for the same chest rolls. The full list is on the PokeBonk items page.
| Item | Effect |
|---|---|
| Life Orb | +30% total damage, but -10% max HP. |
| Choice Band | +35% physical damage, -8% attack speed. |
| Choice Specs | +35% special damage, -8% attack speed. |
| Choice Scarf | +20% speed and +10% attack speed. |
| Expert Belt | +30% damage with super effective attacks. |
| Focus Band | 15% chance to survive a lethal hit with 1 HP (once every 20 s). |
| King's Rock | +6% chance to flinch (stun). |
| Assault Vest | +12 armor and +12% max HP. |
PokeBonk Black Sludge FAQ
What does Black Sludge do in PokeBonk?
+2 regen. Your poisons last 25% longer and deal +20% damage. You can hold up to 10 copies.
How do you unlock Black Sludge?
Poison 400 Pokemon. After that, buy it in the Lab for 400 Stardust.
Browse all 102 items in the PokeBonk items list, or read the PokeBonk guides.