Bad Gas
PillRebirthUnlocked
How do you unlock Bad Gas?
Verified starting unlockSource data confirms that no unlock is required.
Isaac farts, dealing 5 damage and poisoning enemies around him.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Bad Gas leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13