Burning Basement

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Burning Basement.png

The Burning Basement is one of the environments in Chapter 1 added in the Binding of Isaac: Afterbirth expansion. The theme of the Burning Basement is fire, and most enemies are replaced with burning versions. There are relatively few flying or shooting enemies; most of the enemies are ground-based and rely on contact damage. Rocks have a chance to be replaced with fireplaces.

The Burning Basement's alternate floors are The Basement and The Cellar.

The Burning Basement is unlocked by defeating Mom's Heart 11 times.

Monsters[edit | edit source]

Monsters Description
Black Fly
Black Fly
Tiny black fly with neutral AI. Does not hurt Isaac upon touch.
Attack Fly
Attack Fly
Red fly that follows Isaac and deals touch damage.
Ring Fly
Ring Fly
Gathers with any other Ring Flies in the room. These flies orbit around themselves, while following Isaac.
Dart Fly
Dart Fly
Added in Afterbirth
Flies towards Isaac and attempts to mimic his movements. Deals contact damage.
Swarm Fly
Swarm Fly
Added in Afterbirth
Follows Isaac in large groups and deals contact damage.
Moter
Moter
Follows Isaac, similar to Attack Flies. Splits into 2 Attack Flies upon death.
Eternal Fly
Eternal Fly
Invulnerable fly that circles corny poop and various monsters. Turns into a vulnerable Attack Fly after the object or monster it circles is destroyed.
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.
Sucker
Sucker
Flies slowly towards Isaac, exploding into 4 shots in the cardinal directions upon death.
Spit
Spit
Flies slowly towards Isaac, firing an Ipecac shot towards Isaac upon death.
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.
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.
Trite
Trite
Quickly leaps towards Isaac and deals touch damage.
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.
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.
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.
Round Worm
Round Worm
Pops out of the ground in random locations and spits a blood shot at Isaac if he is in sight.
Roundy
Roundy
Added in Afterbirth
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
Added in Afterbirth
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.
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.
Dukie
Dukie
Added in Afterbirth
Flies around the room diagonally, occasionally spitting out a Dart Fly.
Hopper
Hopper
Slowly hops around the room, dealing touch damage. Can turn into a Flaming Hopper by jumping into fire.
Flaming Hopper
Flaming Hopper
Quickly hops around the room, dealing touch damage. Covers a larger distance than the regular Hopper.
Pacer
Pacer
Walks aimlessly around the room.
Gusher
Gusher
Walks aimlessly around the room, occasionally firing short-ranged blood shots.
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.
Flaming Gaper
Flaming Gaper
Added in Afterbirth
Walks towards Isaac, dealing contact damage. Usually turns into a Pacer or a Gusher upon death.
Cyclopia
Cyclopia
Added in Afterbirth
Walks towards Isaac, dealing contact damage and leaving behind a trail of damaging red creep. Occasionally shoots a blood shot towards Isaac.
Skinny
Skinny
Slowly walks towards Isaac, leaving short-lasting red creep behind itself.
Crispy
Crispy
Added in Afterbirth †
Slowly walks towards Isaac, but increases in speed as they take damage. Constantly passively takes damage.
Horf
Horf
Stationary enemy that fires a medium ranged blood shot at Isaac when he gets in range of them.
Fatty
Fatty
Slowly walks towards Isaac. Occasionally farts, which pushes Isaac and adjacent enemies away.
Flaming Fatty
Flaming Fatty
Added in Afterbirth
Slowly walks towards Isaac. Occasionally farts, which pushes Isaac and adjacent enemies away. Has a chance to leave behind a damaging flame upon death.
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.
Wall Hugger
Wall Hugger
Moves around the room like Guts, damaging Isaac by contact. Cannot be destroyed.
Embryo
Embryo
Aimlessly hops around the room, dealing contact damage.

Bosses[edit | edit source]

Boss Monstro.png
Boss Larry Jr..png
Boss The Duke of Flies.png
Boss Famine.png
Boss The Haunt.png
Monstro Larry Jr. The Duke of Flies Famine Needs to be unlocked The Haunt
Boss Rag Man.png
Boss Little Horn.png
Rag Man Added in Afterbirth Needs to be unlocked Little Horn Added in Afterbirth Needs to be unlocked

Unlockable Achievements[edit | edit source]

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

Music[edit | edit source]

The track that plays in the Burning Basement is titled Fundamentum.

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
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Isaac App.png Characters MainPageBabies.png Co-op MainPageItems Small.png Items Item Pools Item Pools MainPageMonsters.png Monsters MainPageObjects.png Objects
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