The Binding of Isaac: Antibirth Wiki

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Welcome to the Official Binding of Isaac: Antibirth Wiki!
A comprehensive encyclopedia for The Binding of Isaac: Antibirth that is written and maintained by the players.
Make sure you familiarize yourself with the rules.
About the Mod
Antibirth is a free fan-made expansion for The Binding of Isaac: Rebirth. The mod includes new items, characters, enemies, challenges, secrets, and much more! The mod was primarily developed by Kilburn, NotYourSagittarius, and LeatherIceCream, with music by Mudeth.

Five years ago, a young boy took his first trip down into the basement, facing the endless threats below to escape from the murderous delusions of his loving mother. Three years later, he found himself facing the same predicament but with an even greater plague of horrors and peril. Very shortly afterward, a modest few decided that even this was not enough. In the two years since then, fate has worked tirelessly to place by far the most fearsome challenge yet in his path. This time, Isaac will face our free and fan-made The Binding of Isaac: Rebirth expansion, Antibirth. So what exactly is in store for him?

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Bosses Challenges Chapters Characters Items
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Monsters Objects Pickups Trinkets Unlockables
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17 March 2018

     09:24  Planetarium‎ (diff | hist) . . (+191). . (talk) (Trivia: added a fun fact about The Stars and planetariums) (Tag: Visual edit)


Changes‎‎ (3 changes | history) . . (+842). . [‎ (3×)]



(cur | prev) . . (+182). . (talk) (Monsters: Added a source for the previous change/bug.) (Tag: Visual edit)



(cur | prev) . . (+463). . (talk) (Monsters: Added a change to Famine's spawning with the Book of Revelations, possibly a bug.) (Tag: Visual edit)



(cur | prev) . . (+197). . (talk) (The Lost: Added the change in the unlock method from Rebirth's version to Afterbirth's.) (Tag: Visual edit)

751 participating in this Wiki so far! We are currently maintaining 1,880 pages (190 articles).