Null

"The rite of passage."
 * -|Current=

- World Description

"Return to nothing."
 * -|Former=

- Former World Description

Description
null is a secret world that the player can encounter when they use Wrath (Sin) item to instakill the boss in the final room of Droids HQ. This world will immediately load instead of the spinning rune and the button appearing in the boss arena. Each room in Null is preset and will never be randomized. It is impossible to get a Vault in this world.

Environment
null has a blackish purple color scheme, with granite walls and floor. This world will always take place at night.

Upon entering null, all of your items are removed, your abilities are disabled, and you are given a Singularity Sword. The first room is simply a spinning rune of the floor with a button on the center. The second room contains a single Friendly Droid that you are forced to kill to proceed. All proceeding rooms will be empty except the last room, where there is a spinning Rune with a Wrath Sword on the center. Picking up this sword will end your run and give you a win and rewards.

null is completely dark, having pitch-black walls and a pitch-black floor. The time is set to night and there is no way to change it to day, due to you losing all your items and abilities but you gain the Singularity Sword when accessing this world.

The first room in null has a button which you need to press to access the second room. The second room has a Friendly Droid that you are forced to kill in order to proceed. The third to ninth rooms are all empty, and each room has a slight delay before proceeding to the next empty room. The tenth room features a large spinning rune, with the Wrath (Sword) in the middle. Picking up the sword will end the game, and give the player a win, or a crown if they are playing a Crown Challenge.

Trivia

 * null is one of the five secret worlds in the game, the other worlds being The Darkness, Astray, Respite, and The Brink.
 * null cannot be accessed in Ascension or multiplayer sessions, due to the boss not getting instakilled and requiring you to defeat it legitimately. Activating Wrath (Sin) on the boss will instead incur its usual effects, while the boss has full immunity to its effects.
 * It's possible to bring items into null by dropping them in the boss room using Butterfingers before using the Wrath (Sin).
 * Cake Candle & Item Vision can also give you the assorted items in the null.
 * The Friendly Droid is considered an enemy by the game so it can be affected by items such as Ghost Dagger or The Bomb.
 * There is a softlock if you enter null during a Crown Challenge with the [Frendly Forcefields] rule, as you may be unable to kill the Friendly Droid in the second room which is invincible due to having a forcefield without certain items.
 * Reaching this softlock requires a Crystal Torch or another rule that allows you to get the Wrath sin (e.g. [Seven Deadly Sins] or [Altar Spree]) as you'll be unable to kill the shopkeepers yourself to enter The Darkness.
 * It's possible to kill the Friendly Droid in this scenario by using a Crystal Torch to remove the forcefield or instakill items which bypasses the forcefield (such as The Bomb or Pocket Nuke). These items must be brought into null using Butterfingers or being extraordinarily lucky with Item Vision.
 * null, The Darkness and the Blood Moon are the only worlds to not be able to be set to day or be able to warp.
 * If the player tries to set the time to day, the following text will appear: It's too dark...
 * If the player attempts to warp, the following text will appear: ...
 * Before Update 1.5, null was always accessed after Atomic Factory and only consisted of one room that contained a single spinning Rune with an elevated button that ends your run with a win when pressed. It also did not delete your items and was possible to set the time to Day using a Lantern or Illumina.