Challenge Room

Description

Challenge Rooms are special rooms that allow Isaac to fight enemies for extra rewards. They will only spawn on a floor if, upon entering the floor, Isaac's total health is greater than or equal to his number of heart containers. There are two kinds of challenge rooms: Normal Challenge Rooms, which appear on the first floor of a chapter or on floors, and Boss Challenge Rooms, which appear on the second floor of a chapter. Challenge rooms do not appear in chapter 6.

Normal Challenge Room

Normal Challenge Rooms can only be entered via their doors if Isaac's total health (Red, Black, and Soul Hearts) is greater than or equal to his number of heart containers. Picking up its contents will cause three waves of enemies to spawn. While in chapter 4 (Womb/Utero/Scarred Womb), 3 waves of bosses will be spawned, typically from Chapters 1 or 2.

nr Waves

The enemies that spawn depend on the current chapter, and each chapter has two different possible sets of enemies:

Boss Challenge Room

Boss Challenge Rooms will only spawn if Isaac has full health upon entering the second floor of a chapter, and can also only be entered via their doors if he has one or fewer hearts of health. Picking up its contents will cause two waves of bosses to spawn. Starting on Chapter 4, they use the same waves of bosses as Normal Challenge Rooms. The bosses that spawn depend on the current chapter. Alternate floors have two possible sets of bosses that could spawn:

Layouts

The following room maps were made using Basement Renovator for cleaner viewing; note that both normal and boss challenge rooms use the same layouts.

Notes

* will cause an additional chest to spawn after a normal Challenge Room is completed as well as cause an additional item from the Boss item pool to spawn after completing a Boss Challenge Room. * a The waves appear in random orders rather than the orders listed above. * If Isaac has some way to teleport out of the room, the contents of the Challenge Room can be taken without fighting the enemies. ** If a trigger to start a challenge room is left in the room after teleporting out (such as a chest or active item) or an item is spawned in the room and collected (such as rewards from s or s), the challenge room will start over when it is picked up/opened. * If a Secret Room is next to a Challenge Room, it can be entered by using a bomb in the Secret Room on the wall separating the two rooms. However, the entrance to the Secret Room from the Challenge Room closes itself, meaning Isaac cannot escape through the Secret Room entrance.

Images