The Cellar

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Cellar.png

The Cellar is one of the environments in Chapter 1. It is unlocked after defeating each boss in The Basement, including defeating the smallest twin first in Gemini's fight. It is not necessary to defeat Steven to unlock the Cellar. The theme of the Cellar is spiders and poop.

Monsters[edit | edit source]

Monsters Description
Sack
Sack
Stationary enemy that decreases in size when hit, but regenerates to its full size until fully destroyed. Occasionally spawns Spiders when fully swollen.
Walking Sack
Walking Sack
Does not shrink or regenerate. Walks around aimlessly and occasionally spawns Spiders.
Clotty
Clotty
Randomly wanders around the room, firing 4 blood shots in the cardinal directions.
Clot
Clot
Randomly wanders around the room, firing 4 tar shots in the ordinal directions.
I.Blob
I.Blob
Randomly wanders around the room, firing 8 shots in all directions.
Dip
Dip
Slowly dashes in random directions, dealing contact damage.
Squirt
Squirt
Dashes towards the player and deals contact damage. Spawns 2 Dips upon death.
Embryo
Embryo
Aimlessly hops around the room, dealing contact damage.
Fatty
Fatty
Slowly walks towards Isaac. Occasionally farts, which pushes Isaac and adjacent enemies away.
Black Fly
Black Fly
Tiny black fly with neutral AI. Does not hurt Isaac upon touch.
Ring Fly
Ring Fly
Gathers with any other Ring Flies in the room. These flies orbit around themselves, while following Isaac.
Moter
Moter
Follows Isaac, similar to Attack Flies. Splits into 2 Attack Flies upon death.
Pooter
Pooter
Slow-moving fly that occasionally fires single blood shots at Isaac. Does not deal touch damage.
Level 2 Fly
Level 2 Fly
Flies toward Isaac erratically, dealing touch damage.
Full Fly
Full Fly
Flies toward Isaac erratically, dealing touch damage. Splits into 6 directional shots upon death.
Spit
Spit
Flies slowly towards Isaac, firing an Ipecac shot towards Isaac upon death.
Gaper
Gaper
Walks towards Isaac, dealing contact damage. Usually turns into a Pacer or a Gusher upon death.
Frowning Gaper
Frowning Gaper
Walks towards Isaac, dealing contact damage. Upon getting near Isaac, it will open its eyes and pursue Isaac faster. Usually turns into a Pacer or a Gusher upon death.
Skinny
Skinny
Slowly walks towards Isaac, leaving short-lasting red creep behind itself.
Horf
Horf
Stationary enemy that fires a medium ranged blood shot at Isaac when he gets in range of them.
Psychic Horf
Psychic Horf
Stationary enemy that fires a homing shot at Isaac when he gets in range of them.
Mulligan
Mulligan
Walks around the room, avoiding Isaac. Upon death, spawns several flies, which can be Black Flies, Attack Flies, or Pooters. Can suicide to explode and launch projectiles in the four ordinal directions while still releasing flies.
Mulligoon
Mulligoon
Walks around the room, avoiding Isaac. Upon death, spawns a Troll Bomb and fires four shots in the ordinal directions. Can suicide to explode, spawn a Troll bomb, and launch projectiles in eight directions.
Mulliboom
Mulliboom
Chases Isaac and explodes upon death or upon touching Isaac. The explosion deals a half-heart of damage instead of the regular full heart.
Nest
Nest
Walks around the room, avoiding Isaac while spawning Spiders. Spawns a Big Spider or a Trite upon death.
Pacer
Pacer
Walks aimlessly around the room.
Gusher
Gusher
Walks aimlessly around the room, occasionally firing short-ranged blood shots.
Round Worm
Round Worm
Pops out of the ground in random locations and spits a blood shot at Isaac if he is in sight.
Nightcrawler
Nightcrawler
Pops out of the ground in random locations and fires four short-range shots that spiral outwards if Isaac is in sight.
Spider
Spider
Erratically moves towards Isaac and deals touch damage.
Big Spider
Big Spider
Erratically moves towards Isaac and deals touch damage. Splits into two Spiders upon death.
Level 2 Spider
Level 2 Spider
Crawls around the room erratically, following Isaac and dealing touch damage. Can jump small distances.
Ticking Spider
Ticking Spider
Crawls around the room erratically, following Isaac and dealing touch damage. Can jump small distances. Explodes upon death.
Trite
Trite
Quickly leaps towards Isaac and deals touch damage.
Ragling
Ragling
Quickly leaps towards Isaac and deals touch damage. Randomly shoots two purple shots that orbit around it.
Baby Long Legs
Baby Long Legs
Runs away from Isaac and frequently spawns Spiders.
Small Baby Long Legs
Small Baby Long Legs
Runs away from Isaac and occasionally spawns Sacks.
Crazy Long Legs
Crazy Long Legs
Chases Isaac, dealing touch damage. Occasionally stops to spit blood shots in 8 directions.
Small Crazy Long Legs
Small Crazy Long Legs
Chases Isaac, dealing touch damage. Occasionally stops to spit blood shots diagonally in 4 directions.
Wall Creep
Wall Creep
Crawls along walls to try to line up with Isaac and shoots three blood shots in a line.
Poky
Poky
Slides around the room aimlessly, damaging Isaac by contact. Disappears when the room is cleared.

Bosses[edit | edit source]

Boss The Haunt.png Boss Blighted Ovum.png Boss Pin.png Boss Widow.png
The Haunt Blighted Ovum Pin Widow
Boss The Duke of Flies.png
Boss Famine.png
Boss Fistula.png
Boss Rag Man.png
Boss Little Horn.png
The Duke of Flies Famine Needs to be unlocked Fistula Added in Afterbirth Rag Man Needs to be unlocked Added in Afterbirth Little Horn Needs to be unlocked

Notes[edit | edit source]

  • Unlocking the Cellar requires defeating every boss in the Basement. However, this does not require actually fighting them in the Basement. It is possible, for instance, to have defeated every single boss except for the Gurglings, encounter them in the Womb, clear the room in which they are encountered, and successfully unlock the Cellar.

Unlockable Achievements[edit | edit source]

  • Basement Boy
    Basement Boy - Beat chapter 1 without taking damage.

Music[edit | edit source]

The music for the cellar is titled Periculum. Periculum is Latin for "danger" or "risk", signifying how the Cellar is a step-up from the Basement.

Binding of Isaac: Rebirth Music


SmallIsaac.pngChaptersSmallIsaac.png
Chapter 1 Chapter 2 Chapter 3 Chapter 4 Optional Chapter 5 Chapter 6 Endgame
Normal mode only
Hard mode only
Stage basement.png Stage caves.png Stage depths.png Stage womb.png Stage sheol.png
Sheol


Stage cathedral.png
Cathedral
Stage dark room.png
Dark Room


Stage chest.png
The Chest
The Basement The Caves The Depths The Womb
Added in Afterbirth Added in Afterbirth †
Stage cellar.png Stage catacombs.png Stage necropolis.png Stage utero.png ??? Stage the void.png
The Cellar The Catacombs Necropolis Utero ??? The Void
Added in Afterbirth Added in Afterbirth Added in Afterbirth Added in Afterbirth
Stage burning basement.png Stage flooded caves.png Stage dank depths.png Stage scarred womb.png
Burning Basement Flooded Caves Dank Depths Scarred Womb
Added in Afterbirth Greed mode only
Added in Afterbirth † Greedier mode only
Added in Afterbirth Added in Afterbirth
Stage basement.png Stage caves.png Stage depths.png Stage womb.png Stage sheol.png The Shop Ultra Greed
The Basement The Caves The Depths The Womb Sheol The Shop Ultra Greed


The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
MainPageAchievements.png Achievements MainPageAttributes.png Attributes MainPageBosses.png Bosses TarotCard.png Cards and Runes MainPageChallenges.png Challenges MainPageChapters.png Chapters
Isaac App.png Characters MainPageBabies.png Co-op MainPageItems Small.png Items Item Pools Item Pools MainPageMonsters.png Monsters MainPageObjects.png Objects
Red heart.png Pickups BlueBlue.png Pills MainPageRooms.png Rooms MainPageSeeds2.png Seeds Guppy App.png Transformations The Left Hand Icon.png Trinkets