V1.7.8

Documented Changes[]

Gameplay Changes[]

"Something spooky" has appeared in the Ashpit!
Lazarus now reverts to his normal form when going to the next floor, gaining his extra life back if he lost it.
Lazarus now gains a permanent +.5 damage up each time he turns into his revived form.
Lazarus now only loses up to 1 heart container when turning into his revived form; this cannot bring him below 1 heart container.
Increased the damage multiplier of Lazarus' revived form to 1.4 (from 1.2).
Reduced the duration of the temporary damage bonus granted by Lazarus' Birthright from 3 minutes to 1; however, this bonus is granted every time Lazarus turns into his revived form.
??? now gets devil deals at a reduced cost and starts with an innate Lil Larva effect (destroying poop spawns 1 blue fly).
Bleed effects from Mom's Razor and Backstabber now deal damage based on how quickly an enemy is moving (faster enemies take more damage). While an enemy bleeds, they leave behind creep that damages other enemies. The effects can now also be applied to bosses.
Mom's Razor now blocks projectiles and can damage bosses.
Camo Undies now grants +.5 speed while cloaked. When uncloaking, all nearby enemies take damage, and Isaac gains a brief tears + damage up.
Lost Fly now deals damage less frequently (7 damage every 7 frames) but forces nearby enemies to target it.
D12 can now reroll most obstacles, including poop, spikes and fireplaces, and can generate more varied obstacles.
Pay to Play now works on double locked doors, key blocks, and chests, and features new sprites for all types of locked doors.
We Need to Go Deeper! / Mom's Shovel / Rune of Ehwaz now feature a secret method to guarantee a crawlspace once per floor and no longer create them based on random chance.
Lil Dumpy is now a follower and automatically produces a Butter Bean fart when an enemy or projectile is about to hit Isaac.
Voodoo Head now improves curse room layouts/rewards.
The Book of Sin no longer creates Micro Batteries (only Lil' Batteries and rarely Golden/Mega Batteries).
Adjusted the formula used to calculate damage for Libra and the pause menu stat tallies (this results in overall higher damage during Libra runs).
Reduced the Devil Deal price of The Nail, Bloody Lust, and Bloody Gust to 1 heart.
Added Little Horn to the Devil Room item pool (it was previously only there in Greed mode).
Replaced Razor Blade with Blood Rights in the Devil Room item pool.
Replaced Mom's Razor with Razor Blade in the Curse Room item pool.
Increased the weight of Blank Card in the Shop item pool (was previously more rare).
Bomber Boy now has normal weight/rarity in the Bomb Bum item pool (was previously more rare).
Toned down the amount of enemies spawned on the first floor of Greed/Greedier Mode.
Beggars no longer give Treasure Map, The Compass, or Contract From Below in Greed Mode.
Added Odd Mushroom to the Treasure Room item pool in Greed mode.
Added Ball of Bandages to the Greed Mode Boss item pool.
Removed Cube of Meat from most Greed Mode item pools except the Boss and Shop item pools.
Removed Dead Bird and Ouija Board from the Devil Room item pool in Greed mode.
Reduced the appearance rate of the Devil Room layout with only Runes in Greed mode.
Urn of Souls now deals 50% more damage when combined with The Book of Belial via Judas' Birthright.
Significantly increased the durability of Book of Virtues wisps created from Ventricle Razor.
Significantly increased the range and damage of the Brimstone beams from Sulfur wisps.
Devil's Crown no longer affects the mirrored Treasure Room in Downpour \ Dross II.
Monster Manual can now grant Gemini and Psy Fly.
Rooms containing pits in Corpse can no longer be bloody.
D7 no longer teleports Isaac when used in certain special rooms (such as Devil Rooms).
Red champion Monstro II now has faster attacks, but also slightly reduced health.
Added unique champion sprites for bosses.
Added visual and audio feedback for Backstabber’s effect.
Added more new room layouts.
Updated various item qualities.
Updated localization files.

Fixes[]

Fixed some characters in the item description font (such as b and d) not displaying correctly since last update.
Fixed some missing shading in The Horny Boys' boss portrait.
Fixed Bag of Crafting being able to craft locked items using fixed recipes.
Fixed Bag Lunch and Wish Bone causing strange behavior with pickups for the rest of the run after triggering (such as infinitely duplicating items from Damocles).
Fixed Devil Rooms not spawning in the floor in Greed Mode if Womb wasn't unlocked first.
Fixed Co-op ghosts being able to take damage from certain sources.
Fixed a rare crash caused by floor generation in the Red Redemption challenge.
Fixed Astral Projection causing a crash when triggering in a room containing rain.
Fixed Clickety Clacks becoming white champions, which could result in a softlock.
Fixed a softlock when throwing Tainted Forgotten into the special minecart in Mines / Ashpit II right after entering the room.
Fixed Tainted Forgotten getting extra plays on Devil Beggars during damage iframes.
Fixed the sound of Tainted Forgotten hitting the ground playing when thrown into a trapdoor.
Fixed The Book of Belial not increasing Devil Deal chance when held by Judas with Birthright.
Fixed Satan sometimes becoming invulnerable during his second phase when under the effects of I'm Excited.
Fixed not being able to shoot during the Kidney Stone barrage effect with Chocolate Milk.
Fixed Neptunus + Chocolate Milk preventing the charge bar from completely filling up.
Fixed Head of Krampus dealing 19 ticks of damage instead of 20.
Fixed Brimstone + Anti-Gravity + Soy Milk not working as intended.
Fixed Pyromaniac being more rare than intended.
Fixed various minor issues with certain room layouts.
Fixed Mother's Shadow's chase track not looping correctly.
Fixed the door to the minecart room in Mines / Ashpit II taking longer to open than intended after successfully escaping Mother's Shadow.
Fixed Colostomia sometimes staying invulnerable for longer than intended during the transition to her second phase.
Fixed VIII - Justice? removing an item from the current room's item pool for every chest spawned.
Fixed Rocket in a Jar Bombs exploding on contact with perma-charmed enemies.
Fixed a softlock caused by falling into a pitfall while Mega Mush is active.
Fixed Sumptorium sometimes not being able to recall all clots when playing as Tainted Eve.
Fixed Black Hole not destroying Fool’s Gold rocks.
Fixed various issues caused by D7 in Home.

Modding changes[]

The rewind console command now instantly reverts the game to the last visited room, skipping the fade in transition.
Fixed EntityPlayer:TriggerBookOfVirtues() not working correctly.
Fixed EntityFamiliar:PlayChargeAnim, PlayShootAnim, and PlayFloatAnim crashing the game when called.
Fixed Level:MakeRedRoomDoor() crashing the game when called.
Added missing enums for recently added item tags.
Added Room:GetEnemyDamageInflicted().
- Returns the total amount of HP lost by all enemies in the room within the current frame.
- This is used by items that charge on damage inflicted such as Berserk!.
Added EntityPlayer.SamsonBerserkCharge.
- Internally used by Tainted Samson, increases based on damage dealt, range is 0-100000.
Added EntityPlayer.IBSCharge.
- Internally used by IBS, increases based on damage dealt, range is 0-1.

Undocumented Changes[]

Added two new co-op babies: Finger Baby and Bald Baby.
In modding, calling json.decode will no longer create a global variable for no reason.
When the game crashes, it will print the Lua line number that caused the crash (if applicable).
The Haunt's 2nd phase sprite was updated.
The Hollow's teeth got some new shading.
Mega Satan (both forms, and both forms of each hand) have the nodelirium tag now (preventing Delirium from transforming into them).
Blank Card's weight also increased in the Greed Mode Shop item pool (from 0.2 to 0.5).
Crooked Penny's weight in the Greed Mode Shop item pool changed from 0.5 to 1.
D Infinity's weight in the Greed Mode Shop item pool changed from 1 to 0.5.
Lost Contact's icon was very slightly changed, and Lost Fly's icon was changed significantly.
Odd Mushroom was also added to the Greed Mode Boss item pool.
Razor Blade was added to the Treasure Room item pool (normal and Greed modes).
Specific item quality changes:
- Backstabber: 1 to 2
- Camo Undies: 0 to 2
- Compound Fracture: 2 to 3
- D12: 0 to 1
- Glaucoma: 2 to 1
- Golden Razor: 2 to 1
- Glyph of Balance: 2 to 3
- Hemoptysis: 3 to 2
- Iron Bar: 3 to 2
- Lazarus' Rags: 1 to 2
- Lil Dumpy: 0 to 2
- Member Card: 1 to 2
- Mom's Razor: 0 to 2
- Purity: 2 to 3
- The Relic: 4 to 3
- Tarot Cloth: 3 to 2
- We Need to Go Deeper!: 0 to 2
The following items gained the nolostbr item tag:
Heartbreak lost the nolostbr item tag.
Localization team members appear in the Credits now:
- German:
  - Michael Lambert (plus Defiant Seagulls?)
- Japanese:
  - Pikii GK (translation + art)
- Chinese:
  - Yazawa Akio (art, translation review/edits)
  - Asakin Xheepey87 (translation review/edits)
- Korean:
  - Bada Games (translation)
  - SeonYeon Min (Rojen) (art)
- Spanish:
  - Luis Roberto Gómez Calderón, Juvenal Paye Cahuaya (both translation + art)
- Russian:
  - Calmic Ivan (translation)
  - Stepan Derevenko, Remezyuk Maxim, Rogachev Dmitry (all art)

Erroneous Patch Notes[]

The following changes were claimed in the patch notes but weren't actually implemented:
- Added Guppy's Eye to the Curse Room item pool.
- Updated Onan's Streak to require Judas and It Lives be unlocked first.