Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

Date released
December 6, 2015

Added in Afterbirth

Undocumented changes[]



  • 15►Stop Watch Stop Watch is no longer a special item.
  • Blocking damage with 15►Holy Mantle Holy Mantle now activates 15►Stop Watch Stop Watch.
  • Decreased 15►Scissors Scissors charge time 6 → 2.
  • Decreased 15►Friendly Ball Friendly Ball charge time 4 → 3.
  • 15►Abel Abel now fires tears directly towards Isaac.
  • Modified room #717 on the Basement/Cellar so that Mulligans no longer spawn next to the entrances. (Mulligans have a chance to randomly explode upon room loading. If this occurred before the patch, it was guaranteed damage to the player.)
  • Removed the top entrances from Devil room #11 and #14. (These are the rooms with Nulls and an Imp, which also happen to spawn at the top of the room, which causes near-guaranteed damage to the player.)
  • Reworked sacrifice rooms.
  • 15►Lost Fly Lost Fly, 15►Papa Fly Papa Fly, 15►Friend Zone Friend Zone, and 15►Obsessed Fan Obsessed Fan now all counts towards the Beelzebub transformation.
  • 15►Cain's Other Eye Cain's Other Eye now scales with Isaac's damage.
  • Curse of the Tower no longer activates if you are damaged by a troll bomb spawned by Curse of the Tower.
  • The window for using 15►Glass Cannon Glass Cannon to steal Devil Room items is much smaller.
  • 15►Crack the Sky Crack the Sky's damage has been buffed and now targets enemies specifically.


  • Fixed the bug where players who completed the 1001% achievement before the release of v1.06.0067 were unable to get the achievement.
  • Fixed 15►The Battery The Battery bug where it was impossible to get a full overcharge on an activated item from clearing rooms.
  • Fixed the bug where it was possible to respawn an Angel Room statue by reloading the room with 15►Goat Head Goat Head (or quitting and continuing).
  • Fixed the bug where it was possible to quit and continue from a Boss Rush in order to quickly complete it.
  • 15►Taurus Taurus now works in Greed mode as expected.
  • Picking up 15►God's Flesh God's Flesh will now properly update Isaac's tear color.

(You can find technical details of afterbirth.a file changes here.)

New bugs[]

  • 15►Technology Technology, 15►Technology 2 Technology 2, and 15►Tech.5 Tech.5 function as if the player has spectral tears. (Visually, the items will appear to be functioning normally, but this isn't the case.)
  • The 15►Dr. Fetus Dr. Fetus and 15►Tech X Tech X synergy causes enemies to drop black hearts as if they were killed by 15►Maw of the Void Maw of the Void.
  • If you pick up 15►Tech X Tech X after picking up 15►Ipecac Ipecac, you still erroneously retain the +40 damage boost from 15►Ipecac Ipecac and the increased tear delay. After the damage stat is refreshed (by picking up another damage item), this bug goes away.
  • With a controller attached, it is possible to move Isaac when the game is out of focus and get him across loading zones and spikes without taking any damage.[1]


Collectible Broken Modem icon.png Version History Collectible Broken Modem icon.png
Rebirth v0.9, v1.0, v1.01, v1.02, v1.031, v1.032, v1.04, v1.041, v1.05 (Hotfix)

v1.06, v1.06 Hotfix, v1.06.0051, v1.06.0052, v1.06.0059, v1.06.0060, v1.06.0067, v1.06.0076, v1.06.0109

Afterbirth †
v1.06.0180, v1.06.0181, v1.06.0182, v1.06.0183, v1.06.0185, v1.06.0187, v1.06.0188, v1.06.0190, v1.06.0192 (Re-release), v1.06.0193, v1.06.0211
Booster Pack #1 v1.06.J34, v1.06.J39
Booster Pack #2 v1.06.J75, v1.06.J85
Booster Pack #3 v1.06.J99, v1.06.J103, v1.06.J104
Booster Pack #4 v1.06.J113, v1.06.J114, v1.06.J119, v1.06.J127
Booster Pack #5 v1.06.J149, v1.06.J150, v1.06.J168
Repentance v1.06.J787, v1.06.J791, v1.06.J796, v1.06.J813, v1.06.J818, v1.06.J820
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
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