Rooms

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Each floor of the game is made up of a number of rooms. The number of rooms on each floor generally increases as the game progresses.

Normal Rooms

Normal Rooms make up the majority of the rooms on a floor. These rooms typically contain enemies and may drop a pickup or chest after all enemies are killed. Many rooms also contain various pickups, chests, items, and obstacles.

Isaac cannot leave a room with enemies until they are all killed or until he uses a bomb to open a door. If Isaac is currently holding an active item, completing a room with enemies will add one charge.

Rooms can come in various sizes; while normal-sized rooms are the most common, double and quadruple-sized rooms can also appear.

DLC Indicator.png L-shaped triple-sized rooms, narrow hallways, and tiny rooms can also appear. Additionally, completing a quadruple-sized room or an L-shaped room will add two charges to Isaac's active item.

Special Rooms

Boss Rooms

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Boss Rooms contain one of the many Bosses, with victory granting Isaac an item from the Boss Pool, Hearts (depending on difficulty), and a trap door leading to the next level.

Mini-Boss Room

Mini-Boss Rooms are identical in appearance to normal rooms and contain one of the Seven Deadly Sins.

Treasure Rooms

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A Treasure Room, or Item Room, is guaranteed to appear on all floors From Basement 1 to Depths 2. From Basement 2 and on, this room requires a key to enter. The room can contain enemies and one item from the Treasure Pool. Various obstacles may be present.

Shops

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Shops sell various items in exchange for coins. Shops start at level 0 and only sell 2 items, but shops at higher levels sell more items. They can be upgraded through the Donation Machine, which can be commonly found in the shops and sometimes in an Arcade. Shops also have a chance of being replaced by a miniboss room containing Greed or Super Greed.

Arcades

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These rooms are locked and require one coin to be opened. Arcades can only spawn on even floors (Basement II, Caves II, Depths II, Utero II) or XL floors if the previous floor was completed with 5 or more coins. Arcades can contain Machines, Beggars, and other objects.

Challenge Rooms

Normal Challenge Room

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Challenge Rooms can only be entered if Isaac's total health (red, black, and soul hearts) is equal to or greater than his number of heart containers. Upon picking up its contents, Isaac has to fight three waves of enemies.

Boss Challenge Room

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Boss Challenge Rooms can only be entered if Isaac has one or less red heart. Its contents are similar to the normal Challenge Room, but upon picking up its contents, Isaac has to fight two waves of Bosses instead of normal monsters.

Curse Rooms

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Curse Rooms feature spikes on the door that hurt Isaac when entering and exiting the room. Curse rooms can contain various things, ranging from enemies to items.

Sacrifice Rooms

Sacrifice Rooms have a chance to spawn a chest after Isaac damages himself on the spikes featured at the center of the room. DLC Indicator.png Sacrifice Rooms can pay out with a much wider variety of rewards.

Secret Rooms

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Secret Rooms must be bombed into, and are usually surrounded by 3 or 4 rooms. Secret Rooms usually contain shopkeepers and various pickups.

Super Secret Rooms

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Super Secret Rooms must be bombed into, and are only located next to one other room. Super Secret Rooms can contain a variety of pickups.

Libraries

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Libraries require a key to be entered and can contain books, cards, runes, and trinkets.

Devil Rooms

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These rooms allow the player to make deals with the devil by trading health for items. Devil Rooms can also contain red chests, black hearts, spikes, or monsters.

Angel Rooms

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Angel Rooms contain an angel statue and an item, soul hearts, or eternal hearts. The Angel Room has a chance to replace the Devil Room if certain conditions are met.

Vaults

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Vaults require two keys to open and can contain various things, ranging from items to Donation Machines.

Dice Rooms

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Dice Rooms require two keys to open. Depending on the number imprinted on the large red die embedded in the floor, stepping onto the center of the die activates an effect.

Bedrooms

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Bedrooms require two bombs to open. Bedrooms contain a bed that can be used once to restore all of the player's health, or if they have no red hearts they give you 3 soul hearts and fully recharge their active item. Depending on if the bedroom is clean or dirty, bombing the center of the carpet will reveal a Crawl Space or a trapdoor leading to the next floor.

Crawl Spaces

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These rooms are entered through trapdoors with ladders in them. They can rarely be found under destroyed rocks. They can also be found using We Need to Go Deeper!, Ehwaz, or in a clean Bedroom. These rooms are viewed from the side, rather than the top like the rest of the rooms in the game. Crawl Spaces usually contain an item or various pickups. Rarely, the Crawl Space will lead to a Black Market.

Black Markets

Black Markets are accessed through Crawl Spaces. These rooms are 2 rooms wide and have 5 shop items that can all be bought for 1 heart container. Black Markets also contain a trapdoor to the next floor and various machines or beggars.

I AM ERROR

I AM ERROR rooms have a small chance of being reached upon teleporting. Every I AM ERROR room contains a trapdoor to the next floor along with various pickups or items. The only way out of an I AM ERROR room is through this trapdoor or by teleporting out.

Boss Rush

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If the player manages to beat Mom in under 20 minutes (visually indicated by the clock icon that appears during the cutscene between floors), a crack will open in the wall of the boss room upon defeating her, allowing entry to a large room with 2 or 4 item pedestals in the center. Taking one of the four presented items will begin the Boss Rush.

Final Boss Room

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This room is only found in the starting room of The Chest and The Dark Room. Opening this door requires Dad's Key or the two key pieces from Angels. Once the room is entered, Isaac will have to face off against the final boss, Mega Satan.

DLC Indicator.png Blue Womb

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If the player manages to beat Mom's Heart or It Lives in under 30 minutes (visually indicated by the clock icon that appears during the cutscene between floors), a crack will open in the wall of the boss room upon defeating it, with a trapdoor to the Blue Womb.

DLC Indicator.png Closets

Closets are rare, small, dead end rooms. They will often contain a unique arrangement of items, objects, or pickups.

SmallIsaac.png The Binding of Isaac: Rebirth SmallIsaac.png

MainPageAchievements.png Achievements MainPageAttributes.png Attributes MainPageBosses.png Bosses TarotCard.png Cards and Runes MainPageChallenges.png Challenges MainPageChapters.png Chapters
Isaac App.png Characters MainPageBabies.png Co-op Magic Mushroom Icon.png Items Isaac's Tears Icon.png Item Pools MainPageMonsters.png Monsters MainPageObjects.png Objects
Red heart.png Pickups BlueBlue.png Pills MainPageRooms.png Rooms MainPageSeeds2.png Seeds Guppy App.png Transformations The Left Hand Icon.png Trinkets

SmallIsaac.png Rooms SmallIsaac.png

Boss Room Icon.png
Boss Room
Mini-Boss Room Icon.png
Mini-Boss Room
Treasure Room Icon.png
Treasure Room
Shop Icon.png
Shop
Arcade Icon.png
Arcade
Challenge Room Icon.png
Challenge Room
Boss Challenge Room Icon.png
Boss Challenge Room
Curse Room Icon.png
Curse Room
Sacrifice Room Icon.png
Sacrifice Room
Secret Room Icon.png
Secret Room
Super Secret Room Icon.png
Super Secret Room
Library Icon.png
Library
Devil Room Icon.png
Devil Room
Angel Room Icon.png
Angel Room
Vault Icon.png
Vault
Dice Room Icon.png
Dice Room
Bedroom Icon.png Bedroom2 Icon.png
Bedroom
Super Secret Room Icon.png
I AM ERROR
Super Secret Room Icon.png
Boss Rush
Super Secret Room Icon.png
Crawl Space
Super Secret Room Icon.png
Black Market