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Basement


The Basement is the first and starting Floor in The Binding of Isaac: Rebirth. It has two stages (Basement I and Basement II) and is arguably the easiest floor in the game.

Unique Features

  • Jars are found in The Basement. They will either contain nothing, Spiders, Coins, The Swallowed Penny, or The Quarter upon being exploded, the chances of said items spawning being in order from greatest to least.
  • The Item Room on The Basment I requires no Key to open.
    • If Curse of the Labyrinth (XL Floor) is in effect, both Item Rooms will require no Keys.
  • The Basement's Theme is Flies.

Monsters

Monster Behavior
Attack Fly Gif
Attack Fly

Flies towards Isaac. Deals contact damage.

Black Fly Gif
Black Fly

Ignores Isaac, flying randomly around the room. Does not deal contact damage. Can turn into a Pooter if near Poop.

Clot
Clot

Moves randomly around the room, occasionally shooting tears in an "X" pattern. Deals contact damage.

Clotty
Clotty

Moves randomly around the room, occasionally shooting tears in a plus pattern. Deals contact damage.

Embryo
Embryo

Randomly hops around the room, ignoring Isaac. Deals contact damage.

Fat Fly Gif
Fat Fly

Randomly and very slowly flies around the room. Will shoot two tears at Isaac in a "V" pattern if close enough. Deals contact damage.

Flaming Hopper
Flaming Hopper

Hops around the room quickly and randomly unless Isaac is in its vicinity, in which it will hop towards Isaac. Can hop over holes, spikes, and rocks. Deals contact damage.

Frowning Gaper
Frowning Gaper

Stationary until it has a path to move towards the player. Can turn into a Pacer or Gusher on death. Deals contact damage.

Gaper
Gaper

Stationary until it has a path to move towards the player. Can turn into a Pacer or Gusher on death. Deals contact damage.

Gusher
Gusher

Randomly walks around the room, occasionally shooting a tear in a random direction. Deals contact damage.

Hopper
Hopper

Randomly hops around the room, unless the player is nearby, in which it will hop towards the player. Can hop over rocks, holes, and spikes. Deals contact damage.

Horf
Horf

Shoots a tear at the player when the player is near it. Stationary. Deals contact damage.

I Blob
I. Blob

Randomly hops around the room, occasionally firing tears in an asterisk pattern. Deals contact damage.

Moter Gif
Moter

Flies towards the player. When killed, splits into two Attack Flies. Deals contact damage.

Mulliboom
Mulliboom

Walks towards the player. When close to the player or when killed, it explodes. Does not get close enough to deal contact damage. Unlike all other explosive damage, this particular explosion only deals a half heart of damage.

File:Mulligan (Enemy).png
Mulligan (Enemy)

Walks away from the player. On death, spawns a Troll Bomb. Does not deal contact damage.

Pacer
Pacer

Randomly walks around the room, ignoring the player. Deals contact damage.

Poky
Poky

Randomly moves around the room, not disappearing until every enemy in the room has died. Deals contact damage.

Pooter Gif
Pooter

Randomly and flies around the room quite slowly. Will shoot a single tear at the player if close enough.

Spider
Spider

Randomly dashes around the room in short bursts until it is near the player, in which it will dash towards the player. Deals contact damage. Warning: Can dash between two rocks.

Sucker Gif
Sucker

Flies slowly towards the player. When killed, shoots four tears in a plus pattern. Deals contact damage.

Bosses

Bosses
Dingle Portrait Duke of Flies Portrait Famine Portrait Gemini Portrait
Dingle The Duke of Flies Famine Gemini
Gurglings Portrait Larry Jr Portrait Monstro Portrait Steven Portrait
Gurglings Larry Jr. Monstro Steven

Trivia

  • The Basement's theme is titled Diptera Sonata, Diptera being the order (in biological terms) of flies.

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