Mini-Boss Room is a room in The Binding of Isaac.

Contains a battle against one of the Seven Deadly Sins mini-bosses, including their Super variants, and Ultra Pride.

The Super variants may not be encountered in Stage 1.

The Mini-Boss Room door appears as a normal door until entered. It cannot be blasted through in order to escape.

Only one Mini-Boss Room can be generated on a floor.

Not every floor contains a Mini-Boss Room, and they can only generate up to Chapter 5.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this room for the previous Repentance version, check this page instead.

The Mini-Boss Room does not have an associated item pool.

• Check out the room description on the external Isaac Wiki.