The Binding of Isaac Rebirth update 1.7.7 (Dec 4, 2021) is now available to download on PC (Steam). According to the Binding of Isaac Rebirth patch notes, the latest update brings various gameplay changes, fixes, enhancements, and more.

Previously, a big update added various quality of life fixes and improvements.

Unfortunately, since the last patch, players are experiencing a number of issues. Today’s The Binding of Isaac Rebirth patch 1.7.7 will fix a few of these issues. Read more details below.

The Binding of Isaac Rebirth Patch Notes (Official) – December 4, 2021

Gameplay changes

  • Added more new room layouts
  • Tainted Cain can now pick up items normally in the Genesis room
  • Strawman, Found Soul, Soul of the Forgotten and Soul of Jacob and Esau now always match their speed to their owner’s
  • Reduced the cooldown of Yuck Heart to 4 (from 6)
  • Technology 2 now works with any familiar that replicates the player’s attack (i.e. Incubus)
  • Isaac’s Heart now grants its effects to Tainted Forgotten’s soul instead of Tainted Forgotten himself
  • Ipecac + Hemoptysis no longer deals damage to players
  • Wiggle Worm’s tears up now scales with trinket multipliers
  • Hook Worm, Ring Worm and Ouroboros Worm now grant a tears up similarly to Wiggle Worm
  • The D1 no longer creates exact copies of pickups (i.e. duplicating a card may spawn a different card)
  • Echo Chamber now only copies the last 3 cards/pills used
  • C Section + Technology shots now only have a luck based chance to replicate themselves when combined with Explosivo, Sinus Infection or Mucormycosis to prevent infinite loops
  • Tainted Moles can no longer be champions
  • Increased the armor strength of Tainted Round Worm to 30 (from 12)
  • Reduced the health of Tainted Mulligan to 100 (from 120)
  • Reduced the health of Flesh Death Head to 30 (from 50)
  • Added Dead Tooth and Monstro’s Tooth to Bumbino’s special drop pool
  • The creep pool spawned by Free Lemonade now deals more damage and lasts twice as long
  • Updated the sprite of Magic Fingers
  • Updated a few item qualities
  • Updated localization files


  • Addressed Tainted Lazarus’ hologram taking damage from the lava in the Beast fight
  • Addressed Tainted Lazarus’ hologram being affected by poison clouds and Dogma’s Godhead shots
  • Addressed Tainted Lazarus not being able to shoot after flipping while Dark Arts is active

Addressed Tainted Keeper still getting less coins than intended in from killing enemies in Greed mode if he left the starting room at any point during the current floor

  • Addressed Tainted Forgotten not being able to throw his body if blindfolded with a charged attack (such as Chocolate Milk or Cursed Eye)
  • Addressed a crash caused by recalling clots as Tainted Eve while moving between rooms
  • Addressed a crash caused by using Hemoptysis right as the effects of Berserk end
  • Addressed a crash caused by Lil Portal picking up a heart that spawned as part of a devil room
  • Addressed secret shops and angel shops not generating in the Red Redemption challenge, crashing the game if entered
  • Addressed Eden’s Blessing applying to newly created players during the current run (such as Strawman or Tainted Lazarus’ hologram)
  • Addressed Temporary Tattoo, Old Capacitor, Nuh Uh!, Crystal Key and Karma appearing in Greed mode
  • Addressed C Section, Mom’s Knife, Brimstone and Monstro’s Lung not working at 30 tear rate or above
  • Addressed Cursed Eye not working at 60 tear rate or above
  • Addressed Neptunus + Chocolate Milk not firing any tears at 30 tear rate or above
  • Addressed red chests in the Genesis room still teleporting the player to the Devil room
  • Addressed the aura of Censer and Succubus not rendering correctly when held by Tainted Lazarus’ hologram
  • Addressed Lost Soul taking damage from lasers fired by friendly enemies
  • Addressed the Visage getting stuck in its first phase if the chain is broken by Uranus or Freezer Baby
  • Addressed the Boomerang being able to push stalactites around in the Beast fight
  • Addressed bouncy lasers from the pink champion version of the Haunt having a flickering effect
  • Addressed the Duke of Flies setting off explosive gas when summoning flies
  • Addressed BFFs not affecting Finger
  • Addressed Tainted Lazarus’ inactive form spawning its familiars if the key pieces or knife pieces are consumed while shared between the two
  • Addressed Tainted Lazarus sometimes causing a crash when flipping with the Mom transformation
  • Addressed flipped items sometimes not granting health or consumables

Addressed bosses taking less damage when non co-op players are present (such as Strawman, Found Soul, Soul of the Forgotten and Soul of Jacob and Esau) or when playing as Tainted Forgotten

  • Addressed Lemegeton causing a crash if any non orbiting wisps are present (such as How To Jump)
  • Addressed Tainted Forgotten getting two copies of the Dogma item when entering the Beast fight
  • Addressed freezing the Bony spawned by the Forsaken preventing it from reappearing and doing its Brimstone attack
  • Addressed the Stairway spawning in an inaccessible position in some Greed mode starting room layouts

Addressed familiars not storing their RNG seed properly when saved and restored (this could cause bag familiars to keep dropping the same reward as Tainted Lazarus)

  • Addressed active items sometimes getting lost as Tainted Lazarus when both forms holds two copies of the same active item
  • Addressed Trisagion shots always facing right when combined with Anti-Gravity
  • Addressed Genesis, Joker and Reverse Emperor not teleporting the player to the correct room when used in the mirror dimension or the Death Certificate area
  • Addressed rocket bombs colliding with tears and other bombs
  • Addressed Blood Clot, Chemical Peel and Stye not working correctly on Incubus and similar familiars
  • Addressed troll bombs spawned as part of certain room layouts being turned into poop pickups when playing as Tainted ???

Addressed Guppy’s Eye causing content previews to briefly appear in room layouts containing buttons set to spawn chests or sacks when pressed

  • Addressed Guppy’s Eye not working in crawlspaces
  • Addressed Soul of Lazarus not being removed upon revival when held by Esau
  • Addressed some lights not rendering properly since 1.7.5 (this was particularly notable with Night Light)
  • Addressed glitch items not being removable by victory laps
  • Addressed another issue which caused Lachryphagy tears to accumulate more damage than intended
  • Addressed C Section + Pop! or Lachryphagy causing fetuses to never hit the ground
  • Addressed a rare crash caused by using Rotten Tomato against Mask of Infamy
  • Addressed hearts staying visible in the HUD after turning into the Lost in the middle of a run
  • Addressed damage inflicted by the Greed Mode button not counting as self inflicted damage
  • Addressed extra items spawning when saving and resuming a run while in the Genesis room

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