How do you get the dusk balls in Pokemon HeartGold?

You can't obtain Dusk Balls in Pokemon HeartGold. Dusk Balls were introduced in Generation IV games (Diamond, Pearl, and Platinum) and were not available in Generation II remakes like HeartGold and SoulSilver.

Here's a breakdown of how you can obtain Dusk Balls in other Pokemon games:

* Generation IV (Diamond, Pearl, Platinum): You can buy them from the Department Store in Veilstone City once you've reached the post-game.

* Generation V (Black, White, Black 2, White 2): Dusk Balls can be purchased from various shops, including the Battle Club in Driftveil City.

* Generation VI (X, Y, Omega Ruby, Alpha Sapphire): Dusk Balls are found in various locations, including Hidden Grottos and can be bought from specific stores like the Pokemon Center in Lumiose City.

* Generation VII (Sun, Moon, Ultra Sun, Ultra Moon): You can buy Dusk Balls at the Battle Royal Dome in Poni Canyon.

* Generation VIII (Sword, Shield): Dusk Balls are purchased from the Battle Tower in Wyndon.

* Generation IX (Scarlet, Violet): Dusk Balls are available at the Delibird Presents shops found in various towns and cities.

If you're looking for a similar ball to use in HeartGold, Great Balls are a good alternative and are relatively easy to obtain.