Dark Matter
ItemRebirthUnlocked
passiveGame ID 259★★★★
How do you unlock Dark Matter?
Verified starting unlockSource data confirms that no unlock is required.
+1 damage, adds a chance to shoot fear tears.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Dark Matter leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13