Gold

From the Castle Crashers Wiki, the wiki for all things Castle Crashers

Gold is used to buy items from shops. Players earn gold by picking up items that appear when enemies have been defeated or interactive scenery has been destroyed.

Some items that give players gold are listed below. Gemstones are another type of item that gives players gold.

Picture	Name	Worth
Add	Coin	1
	Sack of Gold	5
Add	Ancient Statue	16