The Binding of Isaac: Antibirth Wiki
The Binding of Isaac: Antibirth Wiki

This page documents Antibirth's changes to Rebirth's content and its expansions.


The Lost[]


  • Eden no longer has variable luck (at least in as reported in missing hud). Instead, Eden always has their luck set to zero. Because of how Rebirth handles Eden luck, being revived as a different character doesn't change luck, even if the character was Eden.


  • Lazarus received tweaked hair sprites.


Dark Judas[]

  • Most costumes now have unique Dark Judas variants, improving how the character looks when many collectibles have been obtained.

Red Alts[]

  • Most costumes with an alternate appearance for when the character has been turned red now have an improved color palette.†


Black Hearts[]

  • Black hearts have a different sound when picked up.†
  • Bigbook animation has been replaced with a screen shake and black particles that fall from the room's walls.
  • Monsters disappear in a cloud of black smoke.


  • Bombs' detonation time is slightly increased.
  • Fuse now has a lit appearance, and emits a small amount of light.



  • D12 is featured as a new item, without the need for Afterbirth.
    • Antibirth's D12 has the same effect as Afterbirth's D12 merely by chance, both developers came up with the same idea independent of each other.
  • D12 has a new sprite.
  • D100 activates D12 as well.

Other items[]

  • Many Screen Pop-ups such as Whore of Babylon and The Bible are now much faster than they were before.
  • Book of Belial has a new animation. The damage buff it gives can be applied infinitely, and can also stack with Devil cards.
  • Poop created by E Coli is not axis-aligned, but is now similar to a normal poop.†
  • Picking up The Mind will have it display its own unique mini-map icon instead of all three map types.
  • Butter Bean deals much more knockback to both enemies and shots. Shots reflected back can also hit enemies.
  • Remote Detonator makes Bomb Rocks explode.

New sprites[]


New sprites[]


New sprites[]



Sacrifice room[]

  • Sacrifice Rooms now have an alternate backdrop with blood on the floor and walls.


Devil Deals[]

  • Taking a 2 heart devil deal while you have one red heart container will cause your character to lose all health.
  • Running out of red heart containers to spend will cause all other devil deals to turn into soul heart devil deals, like in Afterbirth.
  • Soul heart devil deals are sometimes offered without having any red heart containers, like the original Binding of Isaac.


  • Beggars have unique mini-map icons.
  • A new icon is displayed below the mini-map indicating any curses that are active on the floor.
Curse Icon
Curse of the Blind Curse of the Blind Icon.png
Curse of Darkness Curse of Darkness Icon.png
Curse of the Lost Curse of the Lost Icon.png
Curse of the Maze Curse of the Maze Icon.png
Curse of the Unknown Curse of the Unknown Icon.png
Curse of the Labyrinth Curse of the Labyrinth Icon.png
Curse of the Cursed Curse of the Cursed Icon.png

Other Changes[]

  • The lighting engine has been improved.
  • Tear sprites have been adjusted to be more circular instead of polygonal.
  • Isaac has a revamped animation for when using the beam of light leading to the Cathedral.†


  • Many of these changes were added officially to the game as part of Afterbirth†'s Booster Pack #5.
    • These have been denoted with a cross† symbol.
  • More of these changes were added officially to the game as part of the Repentance DLC. If these changes weren't added, there were different changes that were added to the DLC.


Sacdag.png Antibirth Sacdag.png

Boss Baby Plum.png Bosses MainPageChallenges.png Challenges MainPageChapters.png Chapters Character.png Characters Book of Virtues.png Items
Dumpling.png Monsters Bucket.png Objects Immortal Heart.png Pickups Blessed Penny Icon.png Trinkets MainPageAchievements.png Unlockables