Produced in Goo Factories, Goo is used solely to create monsters. Goo is widely considered a rarity due to it's immense usage and the net costs met while looting it. Once you get world map 2, goo is not very useful. In the New World Map, Goo is also used for healing monsters.
- You can buy Goo with a certain amount of Shiny in the General Store. But buying resources is not recommended since it is not very efficient.
- Magma is the counterpart of Goo in Inferno.