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IsaacHD Isaac Rebirth The Caves are the second chapter the player encounters. It takes the shape of a brown stone cave.

This environment introduces Pits and Spikes. The player cannot move over pits without The Ladder, items that give him flight, or bombing an adjacent Rock to fill the hole in.

Spikes hurt Isaac for one heart of damage, unless he has flight.

Caves

Caves 2: Note the miniboss fight

TNT barrels are found on this environment. These barrels explode if shot.

Rooms[]

  • 1: The room will always appear once in this floor
  • 2: The room will always appear twice in this floor
  • Possible: There is a chance for this room to appear, usually due to certain criteria being met
  • -: The room cannot appear in this floor.


Rooms with the core game
Rooms Caves 1 Caves 2 Caves XL Note
Regular Rooms 9 - 12 13 - 14 21 - 25 The player must have Wrath of the Lamb installed for The Caves XL to appear.
Treasure room icon Treasure Room 1 1 2
Shop icon Shop 1 1 1 There is always one shop, even in XL floors.
Secret room icon Secret Room 1 1 1
BossRoomIcon Boss Room 1 1 2 Boss Rooms are always linked in XL floors.
Challegne room icon Challenge Room Possible Possible Possible Will only be generated if Isaac has full health while entering the floor.
Arcade icon Arcade - Possible Possible Only generated when Isaac has 5 Coins upon entering a new floor or part.
Super secret room icon Devil Room Possible Possible Possible
Super secret room icon I AM ERROR Possible Possible Possible Only reachable by using the Telepills, which have a 6.66% chance to teleport Isaac to this room.
Rooms with Wrath of the Lamb
Rooms Caves 1 Caves 2 Caves XL Note
Super secret room icon Super Secret Room 1 1 1
Curse room icon Curse Room Possible Possible Possible
Sacrifice room icon Sacrifice Room Possible Possible Possible
Angel room icon Angel Room Possible Possible Possible
Libary icon Library Possible Possible Possible 5% base chance to spawn, 25% if Isaac is holding a book.
Boss challenge room Boss Challenge Room Possible Possible Possible

Monsters[]

Monster Description WotL DLC
Black Fly
Fly
Tiny black flies that do not hurt Isaac upon touch.
Attack Fly
CUSTOMredfly
Red Flies that follow Isaac and deal touch damage.
Moter
Moters
Follows Isaac, similar to Attack Flies. Will split into 2 Attack FliesCUSTOMredfly upon death.
Red Boom Fly
Spitfly
Flies around the room diagonally, dealing touch damage and exploding into 6 directional blood shots upon death.
Sucker
Sucker
Flies slowly towards Isaac, exploding into 4 projectiles in a + formation upon death.
Hive
Hive
Walks around the room, avoiding Isaac while spawning Attack FliesCUSTOMredfly. Spawns a large number of FliesFly upon death.
Hopper
Hopper
Jumps around the room slowly, damaging Isaac by touch.
Gusher
Gusher
Walks aimlessly around the room, firing extremely short-ranged blood projectiles from its head. Usually spawned after killing a Gaper/Frowning Gaper.Gaper
Maw
Maws
Floats towards Isaac, firing fast-moving blood shots.
Red Maw
Redmaw
Floats towards Isaac faster than regular Maws, exploding into 4 blood shots in a plus pattern upon death. Does not fire any shots.
Globin
Globin
Walks towards Isaac, dealing one heart of contact damage. Turns into a pile of goo after taking enough damage, where it can be killed. Will regenerate after a short amount of time if not killed quickly.
Gazing Globin
Globin 2
Quickly walks towards Isaac, dealing one heart of contact damage. Turns into a pile of goo and slides away after taking enough damage, where it can be killed. Will regenerate after a short amount of time if not killed quickly.
Clotty
Clotty
Moves around the room, firing 4 blood shots in a plus pattern.
Clot
Clot2
Moves around the room, firing 4 tar shots in an X pattern.
I. Blob
Blockade
Moves around the room, firing 8 shots in all directions.
Maggot
Maggot
Aimlessly moves around the room, damaging Isaac by contact.
Charger
Charger
Slowly moves around the room, charging at Isaac when he gets in its line of sight.
Spitty
Spity
Slowly moves around the room, firing a single long-ranged blood shot when Isaac gets in its line of sight.
Host
Host1
Invulnerable stationary enemy. 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 and lower its head again.
Red Host
Host2
Stationary enemy that can be damaged even when its head is lowered. Fires 5 blood shots instead of 3 when rising, and fires more frequently.
Bosses found in normal rooms:
Embryo
Embryo
Aimlessly hops around the room, damaging Isaac by contact damage.
Larry Jr.
Larryjr full
Multi-segmented enemy that quickly crawls around the room, not targeting Isaac. Constantly leaves trails of Poop.
Fistula
Fistula
Floats around the room diagonally, splitting into smaller, faster versions every time it takes damage. Smallest versions spawn a Charger when killed.

Bosses[]

Room-Layouts[]

Related Achievements[]

Spelunkerhat "The Spelunker" - Complete The Caves once.
Lilchubby "Lil Chubby" - Defeat all of the bosses in The Caves. (Fistula, Gurdy, Peep, Chub)
Spelunkerboy "Spelunker Boy" - Complete The Caves without taking damage.

Chapters
Chapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6

The ChestWrath of the Lamb DLC

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