Dusk Ball is an item in the “Special balls” category (Poké Balls). It costs ₽1000.
In-game descriptions
| Diamond / Pearl · Platinum · HeartGold / SoulSilver · Black / White · Black 2 / White 2 · X / Y · Sun / Moon · Ultra Sun / Ultra Moon | A somewhat different Poké Ball that makes it easier to catch wild Pokémon at night or in dark places like caves. |
|---|---|
| Let’s Go, Pikachu! / Let’s Go, Eevee! · Sword / Shield | A somewhat different Poké Ball that makes it easier to catch wild Pokémon at night or in dark places such as caves. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h