Sack of Sacks
ItemAfterbirth+Locked
familiarGame ID 500★★★★
How do you unlock Sack of Sacks?
In The Binding of Isaac, Sack of Sacks is unlocked by earning the Ultra Greedier completion mark as Cain (Character) on hard mode.
Structured pathSource-backed requirements are mapped into trackable steps.
Spawns a familiar that drops a Grab Bag every few rooms cleared.
What unlocking Sack of Sacks leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13