This was supposed to be the final "booster pack" update, but instead, they decided to make it into a large free DLC update. Since it's significantly bigger than the other Isaac updates over the last year, I thought maybe this one deserved a thread on its own
Out now on PC, coming "soonish" to PS4 and Switch.
Major changes
- Over 60 new achievements
- 5 new enemies
- 1 new boss
- Over 800 new rooms
- Over 20 new items
- Lots of quality of life improvements
- FREE if you own Afterbirth+
- Maybe something forgotten???????? :O
And this behemoth of a bug fix list (get your mousewheel finger ready to scroll)
Game changes
Debug console changes
- Fixed Mega Fred not creating a blood explosion on death
- Fixed some minor graphical issues in the main menu
- Fixed special rocks (ie pots and mushrooms) not playing the appropriate sound in some floors
- Fixed boil rocks giving the wrong drops when destroyed in the Blue Womb
- Fixed Haunt champion variants not being transparent during their first phase
- Fixed multidimensional tears not scaling properly (only one of the two layers would scale)
- Slightly improved navigation in the collection menu (faster and loops back on itself when scrolling vertically)
- Updated game over sprites for some of the items from Booster #4
- Fixed The Magician and Judgement having unwanted transparent pixels
- Improved animations for the Shade familiar (and some minor behavior fixes)
- Improved a few existing item and trinket sprites
- Improved sprites for eyeball tears (from Pop)
- Added a more distinctive visual effect to Haemolacria (also visual synergies with Brimstone/Tech/Tech X and Dr Fetus)
- Haemolacria now uses the same tear delay calculation as Ipecac (should scale a little better)
- Fixed Lil Monstro not playing its shooting animation (also replaced its sound effect with a more appropriate one)
- Laser familiars like Robo Baby and Lil Brimstone can now damage fireplaces and poops
- Fixed Stone Grimaces not closing their eyes when the room is cleared
- Fixed a broken interaction between Lachryphagy and Death's Touch
- Fixed an infinite recursion issue with Haemolacria + Lead Pencil and Haemolacria + Dr Fetus + Sad Bombs
- Fixed the Cage's grey creep not blinking like damaging creep normally does
- Fixed the Cage's rolling attack ending as soon as it begins
- Fixed Level 4 Bumbo occasionally getting stuck trying to pick up a coin
- Fixed Mushrooms not displaying status effects, not playing their hiding animation, and moving around way too much when shot
- Stonies now have a brief death animation and break into rock debris
- Added a generic firing animation to Brimstone for combos that keep its appearance but removes its ability to charge (i.e. Haemolacria)
- Slightly toned down the tear delay penalty from Haemolacria + Monstro's Lung + Brimstone/Dr Fetus
- Troll bombs now play their drop sound when they hit the ground, not when they spawn
- Fixed some stray pixels in Rag Mega's animation
- Fixed charmed enemies not being able to deal contact damage to a charmed target
- Betrayal will no longer trigger if there are less than 2 enemies in the room
- Fixed pressure plate rooms granting a charge when bombing out of them
- Fixed spikes rarely staying in their raised position when clearing pressure plate rooms
- Spikes will now start (and remain) in their lowered position when entering a cleared pressure plate room
- Fixed boss HP bar counting negative boss HP, causing it to report inaccurate values or even disappear when bosses are killed with very high damage
- Fixed Razor Blade always giving blood tears when held instead of only when activated
- Fixed Eve not leaving a pool of blood behind instead of pee when walking between rooms at low HP
- Fixed mushroom items not playing their unique pickup sound
- Ministro now has a new hopping animation instead of a sliding animation to reflect its behavior better
- Fixed Euthanasia being able to kill Ultra Greed during his transformation into Ultra Greedier
- Charmed enemies will now prioritize non charmed enemies unless there aren't any
- Fixed the Greed fight before Ultra Greed not triggering the victory jingle when cleared
- Nerve Endings 2 now play a sound when attacking
- Nerve Endings 2 can never replace Nerve Endings next to doors
- Swingers now spawn with their head retracted and extend over 2 seconds (so the head is less likely to spawn right on top of the player with no warning)
- Decreased the damage rate of Level 3 and 4 Bandage Girl to match Meat Boy (it was way too high before)
- Increased the damage rate of Angry Fly to match other fly orbitals (that's only fair, considering its base damage and how often it hits enemies...)
- Stoneys now roar less often and will stop doing it while catching their breath
- Fixed Mega Clotties not making any sound when stomping
- Fixed a glitch which caused Shoop da Whoop to only deal damage during its first few frames, and gave it a flickering impact effect
- Halved the damage of Shoop da Whoop to compensate for the above fix (total damage remains the same, but it will be inflicted over a slightly longer period of time)
- Pickups can now be picked up as soon as they hit the ground
- Added unique card backs for Card Against Humanity, Credit Card, Chaos Card and the cards introduced in booster packs
- Death's Heads no longer deal contact damage during their death animation
- Fixed bosses spawned by Delirious dropping key pieces when killed in angel rooms
- Fixed Succubus not granting its damage bonus when obtained via Cambion Conception
- Fixed Devil Deals costing soul hearts instead of red hearts if all of the player's heart containers are empty
- Improved animation for charged keys
- Fixed Nerve Endings 2 having a 2 pixel thick outline at the base of their tentacle during their attack animation
- Eternal hearts will now take half a heart worth of damage from any lethal hit taken with only soul hearts
- Fixed orbitals jittering when spawning or entering a new room
- Improved sprites for Mystery Egg
- Fixed the Glowing Hour Glass not discharging on use when overcharged
- Fixed an exploit involving the Glowing Hour Glass and the Schoolbag
- Fixed permanently charmed enemies not being able to shoot projectiles through each other
- Permanently charmed enemies will no longer try to go after Punching Bag
- Fixed use animation not playing when activating Satanic Bible
- Number One and Kidney Stone now cause Isaac to fire "tears" from the middle (since they don't come from his eyes anymore... you know), and at a slightly lower height
- Fixed Glowing Hour Glass duplicating expendable familiars (blue flies/spiders) and perma-charmed enemies
- Fixed projectiles from perma-charmed enemies being blocked by familiars
- Dressing Table will no longer spawn locked items or items that were previously picked up
- Fixed Dressing Table visually duplicating itself when dropping a collectible after being bombed
- Fixed Rag Man's appear animation lasting much longer than intended
- Fixed the Fallen's brimstone attack being delayed due to previous changes to Krampus' AI
- Fixed Krampus' brimstone attack animation not matching the timing of the actual attack
- Fixed Famine starting his dash later than he's supposed to, resulting in a weird looking animation
- Fixed blue Famine's head playing its attack animation with the wrong timing
- Fixed surprise minibosses such as Greed and angels not playing the alternate boss music when they should
- Fixed the Hollow occasionally getting stuck along a wall
- Fixed the Hollow's champion variants often not dropping what they're supposed to drop
- Fixed Freds looking jittery when jumping over obstacles
- Glowing Hourglass now rewinds event counters as well (this includes donations and Eden's blessings)
- Using ? card with Glowing Hourglass will now consume the card
- Removed the 5 uses limit from Glowing Hourglass as all (or most) known game breaking exploits have been fixed (needs testing)
- Changed all of Isaac's red alt spritesheets to have more consistent shading
- Fixed lvl 3 and 4 Meat Boy having inconsistent head and body color (and lvl 3 and 4 Bandage Girl, to a lesser extent)
- Fixed the following item costumes not having color alts: My Little Unicorn, Piggy Bank, Bogo Bombs, Lord of the Pit, Holy Grail, Fate, Cancer, Sagittarius, Synthoil, The Body, Bursting Sack, Betrayal, Lusty Blood, Sticky Bombs, Polydactyly
- Also added color alts to the following transformation costumes: Mom, Spun, Conjoined, Spider Baby
- Some transformations will now properly override the player's skin color (Leviathan, Bob and Fun Guy)
- Fixed Hive Mind head costume not showing up in game
- Fixed an issue where rebuilding the player's costume map would cause visual issues with costumes containing multiple head layers with different spritesheets (such as Mysterious Liquid)
- Runes and Dice Shard no longer play a paper sound on pickup
- Fixed Backasswards having a chance to give items that weren't unlocked yet or multiple copies of the same item, and allowing starting items to appear again during the run
- Improved costume for Broken Modem
- Fixed Mulligans and all variants instantly exploding if killed during their spawn animation
- Fixed Cod Worms being briefly vulnerable during their spawn animation
- Fixed Knights and Eyes being completely invincible during their spawn animation (Knights will still block tears from the front and sides)
- Fixed Blastocyst not splitting when killed while poisoned (and awkwardly sliding towards the player during its splitting animation sometimes)
- Added a small random delay before Gushers, Splashers and Blubbers can shoot projectiles (so they don't immediately shoot as soon as an enemy turns into them)
- Fixed Doples firing their first shot from the middle of the room when the player enters the room while firing
- Fixed the Lamb's body not triggering the boss victory jingle if killed last
- Fixed Gemini's baby not making a small grunt when it detaches (clearly an oversight as Steven's baby does it)
- Mom's Knife now applies status effects in a more consistent way
- Fixed Big Horn getting instantly killed by Sharp Straw (among with other minor animation fixes)
- Fixed Ouija Board costume overwriting the player's skin color to pink instead of white
- Added interpolation to enemy projectiles with wiggling effects (they will now look much smoother in motion)
- Fixed slot machines appearing as batteries in the minimap if a battery is present in the same room
- Fixed Rag Mega's invincibility ending later than what his animation would suggest
- Lost Contact now only affects the player's tears (and tears shot by Incubus)
- Fixed mimic chests instantly opening and damaging the player if they spawn at their position when clearing a room
- Fixed Greed donation machines jamming even when the HUD displays a jamming rate of 0%
- Directional tear variants (i.e. Cupid's Arrow) now take their falling speed into account when computing sprite rotation
- Added minimap icons for half hearts, half soul hearts, blended hearts and golden hearts
- Improved some of the existing minimap icons (notably sacrifice rooms)
- Spectral tears will no longer bounce off rocks with Rubber Cement
- Hush and Greed Gapers will now have a proper appear animation if spawned by a room rather than by a boss
- Reduced base HP of Hush Gapers and added stage HP so they have slightly more reasonable health when encountered early
- Fixed Portals being able to spawn two enemies in very quick succession upon entering a room
- Fixed some champion types rarely spawning what they're supposed to spawn in hard mode (such as splitting champions)
- Fixed enemies spawned from splitting champions sometimes appearing too far away from the original enemy
- Exploding champions will no longer explode if killed very close to the player 1 second within entering the room
- Unlockable pickups (i.e. golden bombs) will be replaced with a random variant if they haven't been unlocked yet
- Made Rage Creep's attack animation slightly longer so it won't start moving until its laser has fully disappeared
- Rooms made for the Afterbirth alt floors after Booster #4 will no longer be subjected to random rock replacements
- Pressure plates that spawn enemies will now close the doors as well
- Breath of Life will now immediately give invincibility frames when triggered by Void (previous behavior made it extremely exploitable)
- Added some visual feedback when Breath of Life provides its invincibility
- Breath of Life can now be held down between rooms
- Fixed Technology 2 beam being deleted and respawned twice if maintained during a room transition
- Fixed not being able to pick up a trinket if the player has that trinket's effect via the Error trinket
- Fixed Death's List streak ending if a perma-charmed enemy dies
- Fixed alt skin color spritesheets not loading for mod items
- Added a visual cue to Hairpin when it recharges the player's active item upon entering a boss room, audio cue now plays after boss intro instead of before
- Fixed spawner familiars (i.e. sacks) not playing their floating animation until they spawn something
- Fixed Little C.H.A.D. having missing animation frames
- Fixed Little C.H.A.D. playing its kissing sound every room cleared instead of only when it spawns hearts
- Spawner familiars now have a more consistent spawning algorithm (also BFFs now actually increases their spawn rate as intended)
- Fixed spawn command ignoring subtype when spawning entities by name (i.e. heart pickups)
- Fixed the Left Hand not affecting bomb chests
- Fixed Lil Gurdy being excessively loud when hitting walls
- Glowing Hour Glass will now also revert the player's character if it was changed by an item during the current room
- Fixed some minor visual issues when turning back time with Glowing Hour Glass (such as fires being invisible during the teleport in animation)
- Spiders and Big Spiders will no longer blink when the player has Bursting Sack
- Champion enemies will no longer deal contact damage if the non-champion version doesn't
- Charmed portals will now spawn permanently charmed enemies
- Fixed Spear of Destiny hit detection being shifted up by several pixels
- Fixed a crash when disabling a mod that contains custom characters
- Fixed the Bestiary not counting kills for Ultra Greed and Ultra Greedier
- Donations will now gradually accelerate if the player stays in contact with the donation machine (applies to Greed donations as well)
- Fixed Glaucoma blood tears being completely invisible
- Fixed Multidimensional Baby not working properly with Anti Gravity tears
- Fixed miniboss rooms not displaying the right character name if the player's character was changed via an item
- Fixed pickups not showing up in the Shop in the minimap
- Fixed red creep not being darkened in the Womb when playing Greed Mode
- Red creep will no longer be darkened in the Scarred Womb
- Fixed Eve not starting with the Razor Blade if the item itself hasn't been unlocked yet
- Holy Mantle will no longer be restored if the player saves and continues after losing it
- Fixed Famine's charge and Ultra Greed's dash being able to instantly kill the player in some cases
- Boss heart drops now depend on the room seed (they no longer depend on the order in which the bosses are killed)
- Fixed daily related achievements incorrectly notifying that all challenges have been unlocked
- Fixed a memory leak occuring when exiting a run while a coop baby is still on screen
- Fixed up some code related to coop babies to make them work better with Glowing Hourglass
- Fixed Lil Haunts having an incorrect sprite on the death screen (and in the bestiary)
- Fixed a bug which caused certain Greed mode waves to be much more common than others
- Achievement popups can now be fast forwarded by tapping Start
- Adjusted the stats of each character in the character selection menu to better reflect their actual in-game stats
- Updated charge bars to be less visually intrusive
- Fixed missing animation warning spam caused by Stoneys
- Added extra sounds and effects to creep attacks (from Conjoined Fatties and Meatballs)
- Fixed blue and purple fires having a chance to drop multiple soul hearts if extinguished by multiple simultaneous explosions
- Following familiars are no longer pushed back when very close to the player (behavior more consistent with Rebirth)
- Added a charge bar to Mom's Knife and Lil Gurdy
- Fixed Incubus' charge bar being incorrect with Mom's Knife
- Coop babies are now saved and restored by Glowing Hourglass
- Fixed some special coop babies giving the wrong amount of hearts back to the player when removed
- Fixed items that lock the player's aim completely overriding the blink animation
- Fixed a softlock with Mega Satan caused by Mine Crafter
- Fixed sacks dropping batteries and tarot cards way more often than intended
- Boosted announcer lines for the new cards and pills so they are consistent with the rest
- Parasitoid will no longer spawn spiders/flies when hitting invincible enemies such as stone grimaces
- Fixed using Mr. ME! with Car Battery causing stolen items to become non-solid
- Fixed Marked crosshair not blinking
- Fixed the inner part of the boss health bar casting a visible extra shadow
- Fixed some more enemies not having overlay effect attachment points
- Added unique sounds for golden hearts, black hearts and golden bombs
- Added better visual feedback for gold hearts when breaking
- Gold hearts will now turn nearby enemies to gold when breaking
- Character selection ring now has a perspective effect which scales with the number of characters so it never looks cluttered
- Custom characters will now be placed before Random rather than after
- Eden can now be randomed if the player has Eden tokens
- Fixed the character selection wheel decelerating too early when randoming, cycling through characters at minimum speed until reaching the desired character
- Added a failsafe to prevent crashes when too many entity queries are done in a single frame (this fixes a few crashes that occur when a lot of entities are on screen)
- Lil Haunts are no longer considered bosses (meaning they can be caught with Friendly Ball) and now have a unique death portrait
- Fixed a bunch of bestiary entries using the wrong portrait
- Locusts will now only spawn when a room has been entered for the first time (prevents farming them using Door Stop)
- Fixed Samson's Chain links not being positioned properly with BFFs
- Fixed Gemini familiar chain not being properly interpolated
- Fixed Gemini familiar not scaling with BFFs
- Fixed Pay To Win overriding More Options
- Coop babies can no longer borrow Guillotine from the player (very buggy interaction)
- Fixed rock waves from Wait What? and Mega Bean being able to hurt Isaac's Heart and co-op babies
- Trap buttons will now lock the room when spawning enemies
- Fixed some pills not playing the correct sad/happy animation
- Fixed being able to clip through item pedestals by running into them
- Incubus will no longer play sounds when firing Tech X (was particularly annoying with Brimstone)
- Fixed Scarred Para-bites sometimes spawning a projectile at the player's position when killed during their appear animation
- Added unique card back for Holy Card, ? Card and Get Out of Jail Free
- Fixed achievement popups being unnecessarily delayed once the player has played 31 or more dailies
- Afterbirth floor exclusive enemies (i.e. burning/flooded/dank) will no longer appear in Rebirth floors
- Fixed Adrenaline not updating when taking certain health affecting pills (such as Hematemesis)
- Fixed Dark Prince's Crown only reapplying its buff 1 frame after entering a new room, triggering Found HUD each time
- Bombs swallowed by Chub will now do their proper explosion effects
- Fixed Flush and Brimstone+Ludovico affecting friendly enemies
- Added safeguards to prevent boss champions that double themselves (i.e. Monstro, Cage and Gurdy Jr) from spawning on top of the player upon entering the room
- Fixed Guillotine not firing from the right position with Duct Tape
- Fixed some Caves/Depths rooms containing wall creeps being slightly broken since Booster #4
- Homunculus and Begotten will now be chained to an adjacent rock if the nearest wall is more than 1 grid cell away
- Fixed a corner wall entity not being generated in one of the L room shapes (shape 12, causes some issues, notably with Card Against Humanity)
- The Forsaken will now move to a more appropriate place to perform his Brimstone attack in L shaped rooms
- Multiple Forsakens in the same room will now be able to spawn their own bony each and will always spin their Brimstone attack in the same direction at the same speed
- Fixed being able to fire infinite rockets when using Doctor's Remote with Marked
- Fixed sacks dropped from Sack of Sacks often containing identical cards
- Fixed being able to teleport into an Error room on top of a hazard (i.e. a spiked chest)
- Most sources of blue spiders will now throw those spiders out instead of spawning them on the ground
- Parasitoid tears now spawn blue flies/spiders at their position rather than the player's (spawned flies and spiders will be thrown towards the player before targeting enemies)
- Red chests inside a Devil Room will no longer teleport the player to the Devil Room
- Fixed Athame and Maw of the Void being able to spawn many black hearts when damaging enemies with damage resistance (i.e. Mushrooms)
- Fixed some on-kill effects (such as Gimpy and Infestation 2) triggering more than once when an enemy is killed by simultaneous damage sources
- Fixed Envy's split parts sharing the same drop seed
- Moving Box is now unlocked by using Pandora's Box in the Dark Room (as it seems to have been originally intended)
- Coop babies can no longer drop out while the player is playing a pickup animation (could be used to exploit devil deals)
- Poops spawned by E. Coli and Flush now react to damage similarly to regular poops
- Movable TNT barrels now take damage exactly like their regular counterparts (they will take less shots to destroy at base damage)
- Mine Crafter will now spawn a TNT barrel directly at the player's position rather than on a nearby free tile
- Mine Crafter will now spawn two TNT barrels with Car Battery instead of spawning one and then immediately detonating it
- Chaos Card and Little Horn will now properly kill fireplaces without a blood effect
- All variants of Stone Grimaces now explode into rock debris when killed with Chaos Card or Little Horn and will no longer respawn when reentering the room if killed
- Stone Grimaces no longer play their appear animation if encountered in an already cleared room
- Head of Krampus no longer has a chance to rotate
- Achievements related to sleeping in beds (Wooden Cross, Blanket) will now be unlocked after the sleeping animation rather than before
- Fixed being able to force a revival with Guppy's Collar or Broken Ankh by saving and resuming the run after dying
- Adjusted Isaac's pickup animation so items no longer obstruct his face
- Updated Isaac's Cathedral transition animation
- Made a few minor visual tweaks to Ventricle Razor
- Ventricle Razor portals will now appear closed if they have no connected portal
- Fixed portals from Ventricle Razor sometimes not appearing when created in a large room which is then reentered from a different door
- Fixed not being able to enter Ventricle Razor portals within the same room if the player is in an off screen room (i.e. Devil Room)
- Fixed Devil Room doors not having proper door animations and disappearing when closed
- Items dropped by chests or slot machines no longer revert to their generic stone pedestal look upon leaving and reentering the room
- Fixed Mom's Wig spawning blue spiders way too frequently when the player has a charged attack
- Fixed Kidney Stone not updating the player's firerate on the final tick of the tear burst (effectively leaving the player with -1 tear delay until the tear state is updated)
- Fixed being able to keep the firerate buff from Kidney Stone permanently by picking up an item that changes Isaac's attack type during the tear burst
- Fixed Eden's Soul copying the charge of the previously held active item instead of starting at 0 charge
- Credits and epilogue will now adapt to the game's volume settings instead of always playing at max volume
- Familiars will now be teleported to the player's new position if it was changed by a boss such as Gurdy or Mom's Heart
- Fixed shadow layer not being loaded correctly in any room that doesn't have the standard 1x1 shape
- FX layers with parallax will now smoothly transition to their new position upon teleporting across the room
- Bombs spawned from Scatter Bombs will now actually scatter around
- Small bombs from Scatter Bombs now leave smaller craters
- Fixed Lump of Coal and Ludovico Technique tears looking odd due to always using the biggest tear sprite
Lua changes
- Console now slides in and out faster and more smoothly, accepts input even while sliding in, and can be closed with Esc
- Added support for non QWERTY keyboard layouts
- Backspace can now be held to delete characters quickly
- Text cursor can now be moved left and right in the console
- Home and End will now move the cursor to the beginning/end of the current command
- Ctrl+Home and Ctrl+End will scroll to the beginning and end of the history
- Numpad Enter can now be used to run commands
- Added "clear" command to clear the history
- Clamped console history to 1024 entries to limit memory usage
- Clamped command buffer to 64 entries to limit memory usage
- Commands rerun from the command buffer will now be moved rather than copied to the front (so running the same command multiple times doesn't clutter the command buffer)
- Condensed errors printed by the "lua" command so there is less useless junk at the beginning of the error string
- Lua errors will now be printed to the console
- Added automatic text wrapping to both the console history and input
- Added ConsoleFont parameter to options.ini, set to 1 to use a smaller font (0 by default, can also be switched in game using Ctrl-Numpad+ and Ctrl-Numpad-)
- Added FadedConsoleDisplay toggle to options.ini, shows recent console on screen even if the console is closed (disabled by default)
- Added SaveCommandHistory toggle to options.ini, enables or disables saving the console command history between sessions (enabled by default)
- Debug 4 (high damage) will now actually increase the player's damage stat so it applies to all attack types
- Debug 5 now shows information about the current room (notably the room ID)
- Fixed luamod reporting a success if Lua errors were encountered while loading a mod
- Added a custom implementation for the Lua print() function which outputs to the debug console
- Fixed Player:GetName() causing crashes with coop babies
- Added MC_PRE_ROOM_ENTITY_SPAWN Lua callback for entities spawned as part of a room's layout (int type, int variant, int subtype, int gridindex, int seed) -> int type, int variant, int subtype
- Fixed some mod callbacks crashing if anything other than a table is returned
