A Boss Room (Gemini
) in the Binding of Isaac: Rebirth (BOIR)
. This screen is a good indicator that you have entered a Boss Room.
The Boss Room is a type of Room in The Binding of Isaac: Rebirth (TBOIR)
In this room, you will fight the Boss of the level
You need to defeat the Boss before you can proceed to the next floor.
- Boss rooms often contain blood, rocks, or Poop