Flooded Caves

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(except in Rebirth)

The Flooded Caves is one of the environments in chapter 2 added in The Binding of Isaac: Afterbirth. The theme of the Flooded Caves is water; as such, most of the enemies inhabiting it are airborne, such as One Tooth and flies, and many of them shoot projectiles, while there are fewer ground-bound and contact-damage-reliant enemies. Some enemies like the Hive.pngHive have a chance to be replaced with their drowned variants (except in Repentance and Repentance+) and rocks have a chance to be replaced with water-filled pits.

The Flooded Cave's alternate floors are the CavesCaves and the CatacombsCatacombs.

(in Repentance and Repentance+)After A Secret Exit A Secret Exit is unlocked, a boarded door similar to the one leading to a Bedroom will appear in this floor's Boss RoomBoss Room upon defeating the boss, leading to the MinesMines / AshpitAshpit. This door, like a Bedroom, requires two bombs to be opened. Unlike Angel RoomAngel Rooms and Devil RoomDevil Rooms, this door never disappears.

(in Repentance and Repentance+) Though there is some overlap with DownpourDownpour due to both featuring water flooding, Downpour's unique enemies are often ghostly and supernatural in nature as opposed to the Flooded Cave's theme of drowned or bloated enemies.

(except in Rebirth and Afterbirth) The Flooded Caves are unlocked by defeating Boss It Lives ingame.pngIt Lives 16 times.

Monsters

Entity ID Description
Boil
Boil
30.0 Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Fires multiple short-ranged blood projectiles in random directions when fully swollen.
Gut
Gut
30.1 Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Fires Collectible Ipecac icon.pngIpecac shots in random directions when fully swollen.
Sack
Sack
30.2 Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Occasionally spawns Spider.pngSpiders when fully swollen.
Bony
Bony
227.0 Wanders around the room and throws a bone at Isaac when he is in sight.
Clotty
Clotty
15.0 Randomly wanders around the room, firing 4 blood shots in the cardinal directions.
Clot
Clot
15.1 Randomly wanders around the room, firing 4 tar shots in the ordinal directions.
I.Blob
I.Blob
15.2 Randomly wanders around the room, firing 8 shots in all directions.
Dip
Dip
217.0 Slowly dashes in random directions, dealing contact damage.
Squirt
Squirt
220.0 Dashes towards Isaac and deals contact damage. Spawns 2 Dip.pngDips upon death.
Embryo
Embryo
77.0 Aimlessly hops around the room, dealing contact damage.
Fatty
Fatty
208.0 Slowly walks towards Isaac. Occasionally farts, which pushes Isaac and adjacent enemies away.
Pale Fatty
Pale Fatty
208.1 Slowly walks towards Isaac. Occasionally farts and shoots 6 blood shots in all directions. Has a chance to turn into a Blubber upon death.
Blubber
Blubber
210.0 Walks around aimlessly and randomly spews a cluster of blood shots in all directions. Has a chance to turn into a Half Sack when killed.
Half Sack
Half Sack
211.0 Wanders around aimlessly and leaves a trail of Red Creep.
Fly
Fly
13.0 Hovers in place. Does not deal contact damage and is harmless, but can turn into Pooter.pngPooters if they stay around Poop.pngPoop.
Attack Fly
Attack Fly
18.0 Red fly that follows Isaac and deals contact damage.
Ring Fly
Ring Fly
222.0 Gathers with any other Ring Flies in the room. These flies orbit around themselves while following Isaac. Deals contact damage.
Moter
Moter
80.0 Follows Isaac, similar to Attack Fly.pngAttack Flies. Deals contact damage. Splits into 2 Attack Flies upon death.
Eternal Fly
Eternal Fly
96.0 Invulnerable fly that circles Corny Poop.pngCorny Poop and various monsters. Deals contact damage. Turns into a vulnerable Attack Fly.pngAttack Fly after the object or monster it circles is destroyed.
Level 2 Fly
Level 2 Fly
214.0 Flies toward Isaac erratically, dealing contact damage.
Boom Fly
Boom Fly
25.0 Flies across the room in straight diagonal lines, dealing contact damage. Explodes upon death.
Red Boom Fly
Red Boom Fly
25.1 Flies across the room in straight diagonal lines, dealing contact damage. Creates a ring of 6 blood shots upon death.
Full Fly
Full Fly
249.0 Flies toward Isaac erratically, dealing contact damage. Releases 6 bullets in all directions upon death.
Pooter
Pooter
14.0 Slowly drifts toward Isaac, occasionally firing a single blood shot at him. Does not deal contact damage.
Super Pooter
Super Pooter
14.1 Slowly drifts toward Isaac, occasionally firing two blood shots in a V-formation at him. Does not deal contact damage.
Sucker
Sucker
61.0 Flies slowly towards Isaac, exploding into 4 shots in the cardinal directions upon death.
Gurgle
Gurgle
87.0 Walks towards Isaac, dealing contact damage and periodically firing Collectible Ipecac icon.pngIpecac shots at him; they are immune to this explosion, but other enemies are not. Can turn into a Splasher.pngSplasher upon death.
Skinny
Skinny
226.0 Slowly walks towards Isaac, leaving short-lasting Red Creep behind itself.
Rotty
Rotty
226.1 Slowly walks towards Isaac, leaving short-lasting Red Creep behind itself. Spawns a Bony.pngBony or two Attack Fly.pngAttack Flies upon death.
Globin
Globin
24.0 Chases Isaac, dealing a full heart of contact damage. Upon taking enough damage, it collapses into a pile of goo, which can be killed. Will regenerate after a short period of time if not killed quickly.
Gazing Globin
Gazing Globin
24.1 Quickly chases Isaac, dealing a full heart of contact damage. Upon taking enough damage, it collapses into a pile of goo, which will slide away from Isaac and can be killed. Will regenerate after a short period of time if not killed quickly.
Grub
Grub
239.0 Erratically moves around the room like Boss Larry Jr. ingame.pngLarry Jr. and charges at Isaac when he gets within its line of sight. Spawns Maggot.pngMaggots, Charger.pngChargers, or Spitty.pngSpitties upon death, one for each of its segments.
Gurgling
Gurgling
237.0 Charges towards Isaac when he lines up with them, leaving a trail of Red Creep and shooting 6 blood shots.
Hopper
Hopper
29.0 Slowly hops around the room, doing contact damage. Can turn into a Flaming Hopper by jumping into Fire Place.pngFire Places or other fires.
Flaming Hopper
Flaming Hopper
54.0 Quickly hops around the room, doing contact damage. Covers a larger distance than the regular Hopper.
Leaper
Leaper
34.0 Hops around the room, doing contact damage. Occasionally jumps high into the air, dropping down onto Isaac's position while firing 4 blood shots in the cardinal directions.
Psychic Horf
Psychic Horf
248.0 Stationary enemy that fires a homing shot at Isaac when he gets in range of them.
Host
Host
27.0 Stationary enemy that is normally invulnerable. Raises its head up when Isaac gets close, revealing a fleshy stem that can be damaged. Upon raising its head, it will fire 3 blood shots in a spread and lower its head again.
Red Host
Red Host
27.1 Stationary enemy that can be damaged even when its head is lowered. Fire 5 spread blood shots when it raises its head.
Mobile Host
Mobile Host
204.0 Acts like the Host, but follows Isaac and deals contact damage.
Flesh Mobile Host
Flesh Mobile Host
247.0 Acts like the Red Host, but follows Isaac and deals contact damage.
Knight
Knight
41.0 Moves erratically around the room and charges towards Isaac when in line of sight. Can only be damaged from behind.
Maggot
Maggot
21.0 Aimlessly moves around the room, dealing contact damage.
Charger
Charger
23.0 Slowly moves around the room, charging at Isaac when he gets in its line of sight.
Spitty
Spitty
31.0 Slowly moves around the room, occasionally firing a single blood shot forward.
Conjoined Spitty
Conjoined Spitty
243.0 Slowly moves around the room, occasionally firing a blood shot from both ends of its body.
Maw
Maw
26.0 Slowly floats towards Isaac, firing a blood shot at him when he is in their range.
Red Maw
Red Maw
26.1 Floats quickly towards Isaac and releases 4 blood shots in the cardinal directions upon death.
Psychic Maw
Psychic Maw
26.2 Slowly floats towards Isaac, firing homing shots at him when he is in their range. Spawns with an Eternal Fly orbiting around it.
Mr. Maw
Mr. Maw
35.0 Walks towards Isaac and attacks by launching its head towards him. Turns into a Maw.pngMaw or Gusher.pngGusher upon death depending on the killed body segment. Occasionally separates at will.
Hive
Hive
22.0 Wanders around the room, avoiding Isaac and spawning Attack Fly.pngAttack Flies if he gets close. Spawns a large number of flies on death, which can be Fly.pngFlies, Attack Fly.pngAttack Flies, and/or Pooter.pngPooters.
Nest
Nest
205.0 Wanders around the room, avoiding Isaac and spawning Spider.pngSpiders if he gets close. Spawns a Big Spider.pngBig Spider or Trite.pngTrite upon death.
One Tooth
One Tooth
234.0 Follows Isaac and periodically dashes towards him when it gets close. Deals contact damage.
Splasher
Splasher
238.0 Walks aimlessly around the room, firing Ipecac shots in random directions.
Round Worm
Round Worm
244.0 Pops out of the ground in random locations and spits a blood shot at Isaac if he is in sight.
Night Crawler
Night Crawler
255.0 Pops out of the ground in random locations and fires four short-range shots that spiral outwards if Isaac is in sight.
Spider
Spider
85.0 Erratically moves around the room. If Isaac gets close to it, it chases him, trying to deal contact damage.
Big Spider
Big Spider
94.0 Erratically moves around the room. If Isaac gets close to it, it chases him, trying to deal contact damage. Spawns two Spiders upon death.
Ticking Spider
Ticking Spider
250.0 Crawls around the room erratically, following Isaac and dealing contact damage. Can jump small distances. Explodes upon death.
Trite
Trite
29.1 Quickly leaps towards Isaac and deals contact damage.
Ragling
Ragling
246.0 Quickly leaps towards Isaac and deals contact damage. Randomly shoots two purple shots that orbit around it.
Baby Long Legs
Baby Long Legs
206.0 Runs away from Isaac and frequently spawns Spiders.
Small Baby Long Legs
Small Baby Long Legs
206.1 Runs away from Isaac and occasionally spawns Sacks.
Crazy Long Legs
Crazy Long Legs
207.0 Chases Isaac, dealing touch damage. Occasionally stops to spit 8 blood shots in all directions.
Small Crazy Long Legs
Small Crazy Long Legs
207.1 Chases Isaac, dealing touch damage. Occasionally stops to spit 4 blood shots in the diagonal directions.
Wall Creep
Wall Creep
240.0 Crawls along walls to try to line up with Isaac and shoots three blood shots in a line.
Blind Creep
Blind Creep
242.0 Randomly crawls along walls and shoots three spread blood shots.
Swarmer
Swarmer
91.0 Slowly floats around the room, spawning several Attack Fly.pngAttack Flies. Spawns Pooter.pngPooters upon taking damage. Spawns a Boom Fly.pngBoom Fly upon death.
Tumor
Tumor
229.0 Moves around the room diagonally, occasionally firing 6 blood shots in all directions. Fires more often upon getting damaged.
Stone Grimace
Stone Grimace
42.0 Stationary and invulnerable monster that occasionally fires a blood shot at Isaac. Stops firing when room is cleared.
Constant Stone Shooter
Constant Stone Shooter
202.0 Stationary and invulnerable monster that continuously fires shots in a single direction.
Gaping Maw
Gaping Maw
235.0 Stationary and invulnerable monster that sucks Isaac towards it, along with Isaac's tears and enemy projectiles.
Slide
Slide
44.1 Quickly slides towards Isaac when he gets in its line of sight, then moves slowly back to its original position. Cannot be destroyed.
Wall Hugger
Wall Hugger
218.0 Moves around the room like Guts, damaging Isaac by contact. Cannot be destroyed.
Blue Boil
Blue Boil
298.0 Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Fires 1-3 blood shots towards Isaac when fully swollen.
Corn
Corn
217.1 Quickly dashes in random directions, dealing contact damage.
Dank Squirt
Dank Squirt
220.1 Dashes towards Isaac and deals contact damage, creating slowing black creep. Spawns 2 Clot.pngClots upon death.
Conjoined Fatty
Conjoined Fatty
257.0 Slowly walks towards Isaac. Occasionally pauses to fart out a line of damaging Green Creep towards Isaac. Chance to turn into a regular Fatty upon death.
Swarm
Swarm
281.0 Follows Isaac in large, tightly-clustered groups and deals contact damage.
Dart Fly
Dart Fly
256.0 Flies towards Isaac and attempts to predict his movements. Deals contact damage.
Drowned Boom Fly
Drowned Boom Fly
25.2 Flies across the room in straight diagonal lines, dealing contact damage. Upon death, explodes and fires four blood shots in the cardinal directions. Also has a chance to spawn a Drowned Charger.pngDrowned Charger upon death.
Greed Gaper
Greed Gaper
299.0 Walks towards Isaac, dealing contact damage.
Blue Gaper
Blue Gaper
297.0 Walks towards Isaac, dealing contact damage.
Blue Boil
Blue Boil
298.0 Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Fires 1-3 blood shots towards Isaac when fully swollen.
Drowned Charger
Drowned Charger
23.1 Slowly moves around the room, charging at Isaac when he gets in its line of sight. Explodes into four blood shots in the ordinal directions upon death.
Drowned Hive
Drowned Hive
22.1 Wanders around the room, avoiding Isaac and spawning Drowned Charger.pngDrowned Chargers if he gets close. Spawns 0-2 Drowned Chargers upon death.
Dukie
Dukie
288.0 Flies around the room diagonally, occasionally spitting out 1-2 Dart Fly.pngDart Flies.
Fat Bat
Fat Bat
258.0 Slowly flies towards Isaac. Tries to align itself diagonally to Isaac and shoots at him when in that alignment.
Roundy
Roundy
276.0 Pops out of the ground in random locations, creating a small rock wave. Fires an explosive Ipecac shot at Isaac if he is in sight.
Ulcer
Ulcer
289.0 Pops out of the ground in random locations and spawns a Dart Fly if Isaac is in sight. Fires a blood shot after spawning 6 Dart Flies.
Corn Mine
Corn Mine
295.0 Goes off when destroyed or after some time, then releases a cloud of poisonous gas and fires corny shots in eight directions.
Dark Ball
Dark Ball
404.1 Floats towards Isaac, doing contact damage.
Mr. Red Maw
Mr. Red Maw
(except in Rebirth and Afterbirth)
35.2 Walks towards Isaac and attacks by launching its head towards him. Turns into a Red Maw.pngRed Maw or Gusher upon death depending on the killed body segment. Occasionally separates at will.
Mr. Mine
Mr. Mine
(except in Rebirth and Afterbirth)
311.0 Can only appear in pits. Attempts to launch itself at Isaac if he comes near. Occasionally burrows and pops up in another pit, and fires six shots in all directions upon death.
Stoney
Stoney
(except in Rebirth and Afterbirth)
302.0 Chases Isaac and blocks tears, but does not deal contact damage. Temporarily pauses in exhaustion after a certain amount of time. Invulnerable; dies when the room is cleared.
Ministro
Ministro
(except in Rebirth and Afterbirth)
305.0 Hops around randomly and hop towards Isaac when he gets close, occasionally spitting out a cluster of disorganized shots.
Mushroom
Mushroom
(except in Rebirth and Afterbirth)
300.0 Stationary enemy that occasionally pops up and fires four shots in the cardinal or diagonal directions. Takes less damage while its head is down.
Tube Worm
Tube Worm
(except in Rebirth and Afterbirth)
244.1 Pops out of the ground in random locations and fires a long-range spray of arcing shots where Isaac will be.
Cross Stone Shooter
Cross Stone Shooter
(except in Rebirth and Afterbirth)
202.10 Stationary and invulnerable monster that continuously fires shots in four directions, alternating between cardinal and ordinal.
Portal
Portal
(in Afterbirth †)
306.0 Spawns various enemies from the current floor until it either vanishes or is killed.
Bloaty
Bloaty
(in Repentance and Repentance+)
879.0 Lumbers around, occasionally spitting green shots and a line of damaging green creep in a random direction.
Bulb
Bulb
(in Repentance and Repentance+)
61.5 Flies in erratic, angled movements toward Isaac if his active item has charges; on contact, they drain up to 2 charges, but never deal contact damage. If he has no active item, or no charges, they wander around the room aimlessly.
Faceless
Faceless
(in Repentance and Repentance+)
827.0 Wanders around the room, rarely firing a radial burst of six shots. Chases Isaac and fires shots more frequently after taking damage.
Needle
Needle
(in Repentance and Repentance+)
881.0 Pops out of the ground and lunges towards Isaac, dealing contact damage.
Pasty
Pasty
(in Repentance and Repentance+)
881.1 Pops out of the ground and lunges toward Isaac, dealing contact damage and firing four shots in the ordinal directions.
Prey
Prey
(in Repentance and Repentance+)
817.0 Wanders around the room, avoiding Isaac and spawning Small Leech.pngSmall Leeches if he gets close. Spawns 3 Small Leeches upon death.
Willo
Willo
(in Repentance and Repentance+)
808.0 Flies in a circle around Isaac (in formation with other Willos if available), keeping an exact distance away from him. One Willo at a time will occasionally light up and fire a shot at Isaac.

Degraded Bosses:

Name ID Notes
Blastocyst
Blastocyst
74.0 Small-form only
Fistula
Fistula
71.0 Small- and Medium-form only
The Hollow
The Hollow
19.1
Larry Jr.
Larry Jr.
19.0

Bosses

Boss Chub portrait.png
Boss C.H.A.D. portrait.png
Boss Gurdy portrait.png
Boss Gurdy Jr. portrait.png
Chub C.H.A.D. Needs to be unlocked Gurdy Gurdy Jr.
Boss Peep portrait.png
Boss Polycephalus portrait.png
Boss Dark One portrait.png
Boss Pestilence portrait.png
Peep Polycephalus (except in Repentance and Repentance+) Dark One (except in Repentance and Repentance+) Pestilence Needs to be unlocked
Boss The Fallen portrait.png
Boss Headless Horseman portrait.png
Boss The Forsaken portrait.png
Boss The Frail portrait.png
The Fallen Devil Room Icon.png Headless Horseman Needs to be unlocked The Forsaken Needs to be unlocked The Frail Needs to be unlocked
Boss The Stain portrait.png
Boss Big Horn portrait.png
Boss Rag Mega portrait.png
Boss Fistula portrait.png
The Stain Needs to be unlocked Big Horn (except in Rebirth and Afterbirth) Needs to be unlocked Rag Mega (except in Rebirth and Afterbirth) Needs to be unlocked Fistula (in Repentance and Repentance+)
Boss Mega Maw portrait.png
Boss Mega Fatty portrait.png
Boss Bumbino portrait.png
Mega Maw (in Repentance and Repentance+) Mega Fatty (in Repentance and Repentance+) Bumbino (in Repentance and Repentance+) Needs to be unlocked

Double Trouble

Double Trouble Bosses
Boss The Duke of Flies portrait.png
Boss Monstro portrait.png
Boss Rag Man portrait.png
Boss Pin portrait.png
(Double Trouble)
The Duke of Flies
(Double Trouble)
Monstro
(Double Trouble)
Rag Man Needs to be unlocked
(Double Trouble)
Pin (in Repentance and Repentance+)

Unlockable Achievements

  • Spelunker Boy
    Spelunker Boy - Beat Chapter 2 without taking damage.

Music

  • The music that plays in the Flooded Caves is titled Kave Diluvii.[1]

References