Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki
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** Using {{i|Dad's Key}} or a {{i|Get out of Jail Free Card}} can open the door.
 
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[[Category:Rooms]]
 
[[Category:Rooms]]
 
[[Category:Mechanics]]
 
[[Category:Mechanics]]

Revision as of 20:09, 23 May 2018

In a Mini-Boss Room, any of the mini-bosses can be encountered, which consists of the Seven Deadly Sins, their Super variants, and Ultra Pride.

As opposed to most other special rooms, a player can't tell this type of room from the appearance of the door without items that reveal this information, like The Compass or Spelunker Hat, making the encounter a surprise. Once entered, all doors will be barred with two horizontal wood planks and metal, making it impossible to escape by blasting them open with bombs.

It has three properties that are shared with many special rooms:

  • Not every floor contains a mini-boss room
  • No floor may contain more than one
  • It is always a dead end, except for a fight against Greed or Super Greed in the Secret Room.

Standard Mini-Boss Rooms can spawn on any floor up to Chapter 5. In Chapter 6, Mini-Boss Rooms do not appear except for Greed or Super Greed in the Secret Room. However, mini-bosses are frequently encountered as regular enemies.

Notes

  • A door leading to a Mini-Boss Room cannot be bombed open.
    • Using 15►Dad's Key Dad's Key or a Error: The given collectible ("Get out of Jail Free Card") does not exist. can open the door.

SmallIsaac.png Rooms SmallIsaac.png

Unlocked Added in Afterbirth Added in Afterbirth †
Boss Room Icon.png
Boss Room
Mini-Boss Room Icon.png
Mini-Boss Room
Curse Room Icon.png
Curse Room
Sacrifice Room Icon.png
Sacrifice Room
Room 1x1 small.png
Closet
Room 1x1.png
Grave Room
Locked Added in Repentance
Treasure Room Icon.png
Treasure Room
Shop Icon.png
Shop
Library Icon.png
Library
Planetarium Icon.png
Planetarium
Slotted Arcade Icon.png
Arcade
Barred Challenge Room Icon.png
Challenge Room
Boss Challenge Room Icon.png
Boss Challenge Room
Double-locked Vault Icon.png
Vault
Dice Room Icon.png
Dice Room
Double-boarded Bedroom Icon.png Bedroom2 Icon.png
Bedroom
Hidden Added in Repentance
Secret Room Icon.png
Secret Room
Super Secret Room Icon.png
Super Secret Room
Super Secret Room Icon.png
Crawl Space
Super Secret Room Icon.png
Black Market
Super Secret Room Icon.png
I AM ERROR
Ultra Secret Room Icon.png
Ultra Secret Room
Post-boss Added in Afterbirth
Devil Room Icon.png
Devil Room
Angel Room Icon.png
Angel Room
Super Secret Room Icon.png
Boss Rush
Super Secret Room Icon.png
Blue Womb Entrance