Rune Group

Rune Groups are an internal game classifications analogous to Treasure Classes. They sort runes by value (17 rune groups; 2 in each ascending with Zod alone in 17) and determine which is dropped.

The odds of a given monster dropping a given rune are very complicated to figure. Higher level monsters (and chests) can drop higher level runes (generally speaking). Some monsters, the wraith-types, have up to 4x better odds to drop runes (partially to compensate for the fact that they drop no normal item). The Countess drops runes at a very high rate, and one rune can always be obtained as part of the Hellforge Quest reward.

For more information:

• The Rune Hunting page evaluates rune drop odds and recommends how best to find runes.
• The Item Generation Tutorial contains much detail on item drops.