Balls of Steel
PillRebirthUnlocked
How do you unlock Balls of Steel?
Verified starting unlockSource data confirms that no unlock is required.
Grants Isaac two soul hearts.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Balls of Steel leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13