Sack Head
ItemAfterbirthUnlocked
passiveGame ID 424★★★★
How do you unlock Sack Head?
Verified starting unlockSource data confirms that no unlock is required.
Spawns a Grab Bag on pickup. Pennys, Bombs, Keys, cards, runes and batteries have a chance to become Grab Bags.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Sack Head leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13