The Caves

 

(chapter 2)

Stage ID
4     20

Floor ID
3, 4     2

The Caves is the second chapter of Rebirth. The Caves' unlockable variants are The Catacombs and the Flooded Caves.

Monsters

Entity	ID	Description
Pooter	14.0	Slow-moving fly that occasionally fires single blood shots at Isaac. Does not deal touch damage.
Clotty	15.0	Randomly wanders around the room, firing 4 blood shots in the cardinal directions.
Clot	15.1	Randomly wanders around the room, firing 4 tar shots in the ordinal directions.
I.Blob	15.2	Randomly wanders around the room, firing 8 shots in all directions.
Mulliboom	16.2	Chases Isaac and explodes upon death or upon touching Isaac. The explosion deals a half-heart of damage instead of the regular full heart.
Attack Fly	18.0	Red fly that follows Isaac and deals touch damage.
Maggot	21.0	Aimlessly moves around the room, dealing contact damage.
Hive	22.0	Walks around the room, avoiding Isaac while spawning Attack Flies. Spawns a large number of flies upon death, which can be Flies, Attack Flies or Pooters.
Charger	23.0	Slowly moves around the room, charging at Isaac when he gets in its line of sight.
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	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.
Boom Fly	25.0	Flies around the room diagonally, dealing touch damage and exploding upon death.
Red Boom Fly	25.1	Flies around the room diagonally, dealing touch damage and releasing 6 blood shots in all directions upon death.
Maw	26.0	Slowly floats towards Isaac, firing blood shots at him when he is in their range.
Red Maw	26.1	Floats towards Isaac and releases 4 blood shots in the cardinal directions upon death.
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.
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	27.1	Stationary enemy that can be damaged even when its head is lowered. Fire 5 spread blood shots when it raises its head.
Hopper	29.0	Slowly hops around the room, doing touch damage. Can turn into a Flaming Hopper by jumping into fire.
Trite	29.1	Quickly leaps towards Isaac and deals touch damage.
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	30.1	Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Fires Ipecac shots in random directions when fully swollen.
Sack	30.2	Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Occasionally spawns Spiders when fully swollen.
Spitty	31.0	Slowly moves around the room, occasionally firing a single blood shot forward.
Leaper	34.0	Hops around the room, doing touch damage. Occasionally jumps high into the air, dropping down onto Isaac's position while firing 4 blood shots in the cardinal directions.
Mr. Maw	35.0	Walks towards Isaac and attacks by launching its head towards him. Turns into a Maw or Gusher upon death depending on the killed body segment. Occasionally separates at will.
Knight	41.0	Moves erratically around the room and charges towards Isaac when in line of sight. Can only be damaged from behind.
Stone Grimace	42.0	Stationary and invulnerable monster that occasionally fires a blood shot at Isaac. Stops firing when room is cleared.
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.
Flaming Hopper	54.0	Quickly hops around the room, doing touch damage. Covers a larger distance than the regular Hopper.
Sucker	61.0	Flies slowly towards Isaac, exploding into 4 shots in the cardinal directions upon death.
Embryo	77.0	Aimlessly hops around the room, dealing contact damage.
Moter	80.0	Follows Isaac, similar to Attack Flies. Splits into 2 Attack Flies upon death.
Spider	85.0	Erratically moves towards Isaac and deals touch damage.
Gurgle	87.0	Walks towards Isaac, firing Ipecac shots at him. Can turn into a Splasher upon death.
Walking Gut	88.1	Does not shrink or regenerate. Walks around aimlessly and fires Ipecac shots in random directions.
Swarmer	91.0	Slowly floats around the room, spawning several Attack Flies. Spawns Pooters upon taking damage. Spawns a Boom Fly upon death.
Big Spider	94.0	Erratically moves towards Isaac and deals touch damage. Splits into two Spiders upon death.
Constant Stone Shooter	202.0	Stationary and invulnerable monster that continuously fires shots in a single direction.
Mobile Host	204.0	Acts like the Host, but follows Isaac and deals contact damage.
Nest	205.0	Walks around the room, avoiding Isaac while spawning Spiders. Spawns a Big Spider or a Trite upon death.
Baby Long Legs	206.0	Runs away from Isaac and frequently spawns Spiders.
Small Baby Long Legs	206.1	Runs away from Isaac and occasionally spawns Sacks.
Crazy Long Legs	207.0	Chases Isaac, dealing touch damage. Occasionally stops to spit 8 blood shots in all directions.
Small Crazy Long Legs	207.1	Chases Isaac, dealing touch damage. Occasionally stops to spit 4 blood shots in the diagonal directions.
Fatty	208.0	Slowly walks towards Isaac. Occasionally farts, which pushes Isaac and adjacent enemies away.
Fat Sack	209.0	Slowly walks towards Isaac. Occasionally leaps off-screen and attempts to land on Isaac, leaving a puddle of Red Creep and shooting 6 blood shots in all directions where it lands. Has a chance to turn into a Blubber upon death.
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.
Pale Fatty	210.1	Slowly walks towards Isaac. Occasionally farts and shoots 6 blood shots in all directions. Has a chance to turn into a Blubber upon death.
Half Sack	211.0	Wanders around aimlessly and leaves a trail of Red Creep.
Dip	217.0	Slowly dashes in random directions, dealing contact damage.
Corn	217.1	Quickly dashes in random directions, dealing contact damage.
Squirt	220.0	Dashes towards the player and deals contact damage. Spawns 2 Dips upon death.
Dank Squirt	220.1	Dashes towards the player and deals contact damage. Spawns 2 Clots upon death.
Ring Fly	222.0	Gathers with any other Ring Flies in the room. These flies orbit around themselves while following Isaac.
Skinny	226.0	Slowly walks towards Isaac, leaving short-lasting Red Creep behind itself.
Rotty	226.1	Slowly walks towards Isaac, leaving short-lasting Red Creep behind itself. Spawns a Bony or two Attack Flies upon death.
Bony	227.0	Wanders around the room and throws a bone at Isaac when he is in sight.
Tumor	229.0	Moves around the room diagonally, occasionally firing 6 blood shots in all directions. Fires more often upon getting damaged.
One Tooth	234.0	Follows Isaac and periodically dashes towards him when it gets close. Deals contact damage.
Gaping Maw	235.0	Stationary and invulnerable monster that sucks Isaac towards it, along with Isaac's tears and enemy projectiles.
Gurglings	237.1
Splasher	238.0	Walks aimlessly around the room, firing Ipecac shots in random directions.
Grub	239.0	Erratically moves around the room like Larry Jr. and charges at Isaac when he gets within its line of sight. Spawns Maggots, Chargers, or Spitties upon death, one for each of its segments.
Wall Creep	240.0	Crawls along walls to try to line up with Isaac and shoots three blood shots in a line.
Blind Creep	242.0	Randomly crawls along walls and shoots three spread blood shots.
Conjoined Spitty	243.0	Slowly moves around the room, occasionally firing a blood shot from both ends of its body.
Round Worm	244.0	Pops out of the ground in random locations and spits a blood shot at Isaac if he is in sight.
Ragling	246.0	Quickly leaps towards Isaac and deals touch damage. Randomly shoots two purple shots that orbit around it.
Flesh Mobile Host	247.0	Acts like the Red Host, but follows Isaac and deals contact damage.
Psychic Horf	248.0	Stationary enemy that fires a homing shot at Isaac when he gets in range of them.
Full Fly	249.0	Flies toward Isaac erratically, dealing touch damage. Releases 6 bullets in all directions upon death.
Ticking Spider	250.0	Crawls around the room erratically, following Isaac and dealing touch damage. Can jump small distances. Explodes upon death.
Dart Fly	256.0	Flies towards Isaac and attempts to mimic his movements. Deals contact damage.
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.
Fat Bat	258.0	Slowly flies towards Isaac. Tries to align itself diagonally to Isaac and shoots at him when in that alignment.
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.
Swarm Fly	281.0	Follows Isaac in large groups and deals contact damage.
Dukie	288.0	Flies around the room diagonally, occasionally spitting out 1-2 Dart Flies.
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	295.0	Goes off when destroyed or after some time, then releases a cloud of poisonous gas and fires corny shots in eight directions.
Blue Gaper	297.0	Walks towards Isaac, dealing contact damage.
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.
Greed Gaper	299.0	Walks towards Isaac, dealing contact damage.
Mushroom	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.
Stoney	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	305.0	Hops towards Isaac, occasionally spitting out a cluster of disorganized shots.
Portal	306.0	Spawns various enemies from the current floor until it either vanishes or is killed.

Degraded Bosses
Blastocyst (small) Fistula (small) Larry Jr.

Bosses

Chub	Dark One	Gurdy	Gurdy Jr.

Mega Fatty	Mega Maw	Peep	The Fallen

C.H.A.D.	The Headless Horseman	Pestilence	The Forsaken

The Frail	The Stain	Big Horn	Rag Mega

Fistula	Bumbino

Double Trouble

Double Trouble Bosses
(Double Trouble) Dingle (Double Trouble) The Duke of Flies (Double Trouble) Gemini (Double Trouble) Larry Jr. (Double Trouble) Monstro (Double Trouble) Pin (Double Trouble) Polycephalus

Unlockable Achievements

• 

  Lil' Chubby - Beat chapter 2.

• 

  Something Cute - Beat chapter 2 30 times.

• 

  The Catacombs - Beat all The Caves bosses (not restricted to beating bosses in The Caves).

• 

  Telekinesis - Beat chapter 2 without taking damage.

• 

  Spelunker Boy - Beat chapter 2 without taking damage.

Music

The music in the caves is titled Sodden Hollow. The word "sodden" in the name is used to describe the damp, wet appearance of the caves.

Binding of Isaac: Rebirth OST