Floors

All 29 floors and alternate floors, with their boss pools

Data updated 14 Nov 2026

The 29 floors include Basement with its variants Cellar and Burning Basement, and Caves with Catacombs and Flooded Caves. Repentance added Downpour, Dross, Mines, Ashpit, Mausoleum, Gehenna and Corpse, plus Home. Sheol, Cathedral, Dark Room and Chest sit past the Womb line, with ???, The Void and Home further out. The Shop and Ultra Greed are the Greed mode floors. Each floor lists its bosses with a percentage, the share of that floor's boss pool.

Basement
Rebirth
- Monstro 11%
- Gemini 11%
- Larry Jr. 11%
- Dingle 11%
- Dangle 3%
- Gurglings 11%
- Turdling 3%
- Steven 3%
- Duke of Flies 11%
- Little Horn 11%
- Baby Plum 11%
Cellar
Rebirth
- Pin 13%
- The Widow 13%
- The Blighted Ovum 13%
- The Haunt 13%
- Duke of Flies 13%
- Little Horn 13%
- Rag Man 13%
- Baby Plum 13%
Burning Basement
Afterbirth
- Monstro 10%
- Gemini 10%
- Larry Jr. 10%
- Dingle 10%
- Dangle 3%
- Gurglings 10%
- Turdling 3%
- Steven 3%
- Duke of Flies 10%
- Little Horn 10%
- Rag Man 10%
- Baby Plum 10%
Caves
Rebirth
- Chub 9%
- Gurdy 9%
- Fistula 9%
- Mega Maw 9%
- Mega Fatty 9%
- C.H.A.D. 2%
- Peep 9%
- Gurdy Jr. 9%
- The Stain 9%
- Rag Mega 9%
- Big Horn 9%
- Bumbino 9%
Catacombs
Rebirth
- The Hollow 8%
- The Husk 8%
- Dark One 8%
- Polycephalus 8%
- The Carrion Queen 8%
- The Wretched 8%
- Peep 8%
- Gurdy Jr. 8%
- The Forsaken 8%
- The Frail 8%
- Rag Mega 8%
- Big Horn 8%
- Bumbino 8%
Flooded Caves
Afterbirth
- Chub 8%
- Gurdy 8%
- Fistula 8%
- Mega Maw 8%
- Mega Fatty 8%
- C.H.A.D. 2%
- Peep 8%
- Gurdy Jr. 8%
- The Stain 8%
- The Forsaken 8%
- The Frail 8%
- Rag Mega 8%
- Big Horn 8%
- Bumbino 8%
Depths
Rebirth
- Mega Fatty II 14%
- Monstro II 14%
- Mega Maw II 14%
- Gish 3%
- Loki 14%
- Brownie 14%
- Sisters Vis 14%
- Reap Creep 14%
Necropolis
Rebirth
- Dark One II 14%
- The Bloat 14%
- Mask of Infamy 14%
- Loki 14%
- Brownie 14%
- Sisters Vis 14%
- The Pile 14%
Dank Depths
Afterbirth
- Mega Fatty II 13%
- Monstro II 13%
- Mega Maw II 13%
- Gish 13%
- Loki 13%
- Brownie 13%
- Sisters Vis 13%
- Reap Creep 13%
Womb
Rebirth
- Scolex 19%
- Mega Gurdy 19%
- Lokii 19%
- Mega Fred 19%
- Blastocyst 19%
- The Matriarch 5%
Utero
Rebirth
- Teratoma 20%
- Lokii 20%
- Daddy Long Legs 20%
- Triachnid 20%
- The Bloat 20%
Scarred Womb
Afterbirth
- Scolex 13%
- Mega Gurdy 13%
- Lokii 13%
- Mega Fred 13%
- Blastocyst 13%
- Triachnid 13%
- The Matriarch 25%
???(Blue Womb)
Afterbirth
No random boss pool: its bosses are fixed.
Sheol
Rebirth
No random boss pool: its bosses are fixed.
Cathedral
Rebirth
No random boss pool: its bosses are fixed.
Dark Room
Rebirth
No random boss pool: its bosses are fixed.
Chest
Rebirth
No random boss pool: its bosses are fixed.
The Shop
Afterbirth
No random boss pool: its bosses are fixed.
Ultra Greed
Afterbirth
No random boss pool: its bosses are fixed.
The Void
Afterbirth+
No random boss pool: its bosses are fixed.
Downpour
Repentance
- Beelzeblub 25%
- Wormwood 25%
- The Rainmaker 25%
- Min-Min 25%
Dross
Repentance
- Beelzeblub 20%
- Wormwood 20%
- Clog 20%
- Colostomia 20%
- Turdlet 20%
Mines
Repentance
- Reap Creep 25%
- Tuff Twins 25%
- Hornfel 25%
- Great Gideon 25%
Ashpit
Repentance
- The Pile 20%
- The Shell 20%
- Singe 20%
- Great Gideon 20%
- Clutch 20%
Mausoleum
Repentance
- The Siren 50%
- The Heretic 50%
Gehenna
Repentance
- The Visage 50%
- Horny Boys 50%
Corpse
Repentance
- The Scourge 33%
- Chimera 33%
- Rotgut 33%
Home
Repentance
No random boss pool: its bosses are fixed.
?(The Ascent)
Repentance
No random boss pool: its bosses are fixed.