Special Rooms

Special Rooms are a type of room that appears at the end of every world (except for The Darkness and Droids HQ, where the tenth room is replaced with a Boss Arena). It is a room with no enemy droids. When entering a Special Room, every player will receive a 25 heal (50  if there is only 1 player alive). Special Rooms are guaranteed to contain items for sale, ready to be purchased with circuits (most of the time). Items that are purchased will be replaced with a different item of the same type. Items bought with circuits get more expensive in later worlds.

Special Rooms contain a red button, that multiple players are required to press it in order to enter the next world. It will teleport all players, items, and Anti Droids to the next world. It will also teleport circuits only if they are within the Special Room. The amount of votes needed to proceed to the next world depends on the number of players alive.

Special Room Variants
There are 7 Special Room variants in the game, and 2 of them are inaccessible by playing the game normally. In each run, there will be a slight weight in favor of either the Shop, Laboratory, Forge or the Library. Do note that the weighting is random, and it is common to get all 4 variants in a single run. The Shop is a type of Special Room that may be encountered at the end of each world, ranging from Sandy Canyon to Mechtropolis. It is one of the five Special Rooms that can be found without special requirements. The Shop is also guaranteed to be found in the first special room. There are 5 item slots in a single file. The 3 items to the left will be weapons, while the 2 items to the right will always be consumables. In later worlds, there may be a 6th item slot that will only sell Recycling Bins. There is a Friendly Droid behind the counter unless you have survived The Darkness, where only its hat will remain.
 * -|Shop=

Appearance
The Shop has a brown color scheme, with mostly brown wooden walls and a dark brown wooden floor. The items are placed on a wooden counter with a white marble countertop. The red button is located to the left of the counter, and there is a board on the left wall that displays game tips and trivia.

Music
The music that plays in the Shop is Kubbi - Ember.

The Laboratory is a type of Special Room that may be encountered at the end of each world, ranging from Mount Whirl to Mechtropolis. It is one of the main five Special Rooms that can be found without special requirements. There are 5 item slots in a single file. The 2 items to the left will be weapons, the center item will be a potion, while the 2 items to the right will always be berries. In later worlds, there may be a 6th item slot that will only sell Recycling Bins. There is a Friendly Droid behind the counter unless you have survived The Darkness, where only its hat will remain. There is also a cauldron in the center of the room, where players can also mix berries to get potions. However, the limit to the amount of potions the cauldron can make is 3, but you can spawn more cauldrons in the room with the Alchemist's or the Witch's ability.
 * -|Laboratory=

Appearance
The Laboratory has a gray color scheme, with mostly gray walls and a dark gray floor that has a bond pattern. The items are placed on a gray counter with a white marble countertop. The red button is located to the left of the counter, and there is a board on the left wall that displays more information on potion-making, and one combination for a random potion.

Music
The music that plays in the Shop is Kubbi - Cascade.

The Forge is a type of Special Room that may be encountered at the end of each world, ranging from Mount Whirl to Mechtropolis. It is one of the main five Special Rooms that can be found without special requirements. There are 5 item slots in a single file. The 2 items to the left will be weapons, the center item will be a utility, while the 2 items to the right will always be gemstones. The Forge is also the only way for classes to get gemstones (other than the Blacksmith). In later worlds, there may be a 6th item slot that will only sell Recycling Bins. There is a Friendly Droid behind the counter unless you have survived The Darkness, where only its hat will remain. There is also an anvil in the center of the room, where players can upgrade their swords with gemstones.
 * -|Forge=

Appearance
The Forge has a brown color scheme, with mostly dark brown wooden walls and a dark brown floor that has a herringbone pattern. The items are placed on a wooden counter with a white marble countertop. The red button is located to the left of the counter, and there is a board on the left wall that displays more information on upgrading swords with gemstones.

Music
The music that plays in the Shop is Kubbi - Firelight.

The Library is a type of Special Room that may be encountered at the end of each world, ranging from Mount Whirl to Mechtropolis. It is one of five Special Rooms that can be found without special requirements. There are 5 item slots in a single file. The 2 items to the left will be weapons, while the 3 items to the right will always be tomes Tomes can only be activated in a Library (except for the Lost Tome). The Library is also the only way for classes to get tomes and spells (other than the [[Wizard, Elementalist, Cold Conjurer, and Bloodmage). The center item will always have a guaranteed free Mana Spell but will be replaced with a tome when purchased. In later worlds, there may be a 6th item slot that will only sell Recycling Bins. There is a Friendly Droid behind the counter unless you have survived The Darkness, where only its hat will remain.
 * -|Library=

Appearance
The Library has mostly a dark brown color scheme, with dark brown wooden walls and a dark red carpeted floor. The items are placed on a wooden counter with a white marble countertop. The red button is located to the left of the counter. Bookshelves are placed on the left and right sides of the room, and this is the only main Special Room out of the four to not have a board. This is the only special room allows you to jump onto the walls with your base jump power (Using the bookshelves you are able to jump onto the wall, it may take a few tries.

Music
The music that plays in the Shop is Kubbi - Firelight.

The Altar is a type of Special Room that may only be encountered at the end of each world once you have survived The Darkness, ranging from Mount Whirl to Mechtropolis. The Altar is not guaranteed to appear in runs, even after surviving The Darkness, but it is common to find an Altar shortly after surviving The Darkness. The Cultist heals an additional 25 when entering or leaving the Altar. There are 4 item slots, 3 placed at the back and 1 placed at the front. The 3 items at the back will always be sins, while the item at the front will always be a weapon (unknown if ranged weapons are purchasable in the Altar). Instead of circuits, items are instead bought with ,each item costing 50 regardless of world, unless there is a player that has 50  or less, which the items will then cost (-1). A Recycling Bin will never appear regardless of what world you are in.
 * -|Altar=

Appearance
The Altar has a eerie and unsettling feel. It has a dark red color scheme, with mostly dark red cracked walls and the floor is pitch-black. The items are placed on a gray altar. The red button is located behind the altar.

Music
The music that plays in the Shop is Modulogeek - Grace.

The Final Shop is a type of Special Room that is located at the end of Atomic Factory, and it is the final Special Room to be encountered in a normal run without warping. It is one of the five Special Rooms that can be found without special requirements. There are 5 item slots in a single file. The items from left-to-right are: Medkit, Fast Forward, Singularity Sword, Heart Container, and The Bomb. Each item costs 100, except the Singularity Sword which is free. However, there is only one copy of each item, and the item slot will remain empty once the item is purchased. If you use happy hour in this room however, all unbought items will be replaced by a drink. These consumables will not disappear no matter how many times you buy them nor will they change what consumable they are allowing you to spend all of your circuits. It is unknown if this is a bug or a feature.
 * -|Final Shop=

Appearance
The Final Shop has a black color scheme, with black cracked walls and a completely transparent floor. The items are placed on a gray altar. The red button is located behind the altar, and there is no board to display information.

Music
The music that plays in the Shop is PMD2 - TEMPORAL SPIRE (Orchestral Remix).

The Wrath Shop is a type of Special Room that may only found at the end of Respite, which can only be accessed by warping backwards in Sandy Canyon There is only 1 item slot in the Special Room. The item will only sell the Wrath (Sword) once, which requires 666 to be purchased. When it is purchased, it is not replaced by another item, and the item slot will remain empty. However, you can purchase the sword multiple times by entering the Wrath Shop multiple times.
 * -|Wrath Shop=

Appearance
The Wrath Shop is very unsettling, and has a pitch-black color scheme, that showcases the spinning rune similar to the one in Null. The Wrath (Sword) is placed on a gray altar in the center of the room. The red button is located behind the altar, and when pressed, the screen blacks out and a glitchy noise plays, before being sent to Sandy Canyon where the game resumes.

Music
The music that plays in the Wrath Shop is The Caretaker - K1 - Stage 5 Advanced plaque entanglements.

1.3 Version
Similarly to the Pre-1.3 Version, the Wrath Shop looked exactly like the shop and would sell items for 0, with the price going up by 666 if something was bought. The major differences between this shop and the Pre-1.3 Version is that the Friendly Droid would behave similarly to a regular one, and did not have a garbled name. The board on the left wall is not glitched out and only displays a text that is encrypted in Base64. The music that played in this shop was the same as the one playing in the regular Shop.

Pre-1.3 Version
The Wrath Shop used to look more like the Shop variant, but it would instead sell regular shop items for 0, with the price going up by 666 if something was bought. The Wrath (Sword) was also sold in one of the two weapon item slots, and costed 666 initially. There is a unique Friendly Droid in the Wrath Shop, which had a garbled name and would try to attack the player, dealing 1 contact damage. This Friendly Droid would also not drop circuits, or take away the player's when killed. The board on the left wall is glitched out and is completely black with a few white garbled symbols. It is impossible to make out anything from the board.

Vault
The Vault is a type of room that is located at the second final room of each world (excluding Droids HQ, The Darkness, or Respite), if you complete the world either without taking damage or under the challenge time. It's important to note that Vaults are not typically considered special rooms, as special room bonuses don't apply, and Lucky Droids can spawn in them. However, if a Lockpick is used, a special room variant of the Vault will spawn. There are 4 item slots in a single file. The three items to the left will be consumables or utilities (or even sins if The Darkness is cleared, at least 1 sin is guaranteed per vault, always appearing in the slot to the left of the Golden Circuit), while the rightmost item will always be a Golden Circuit. All the items are free, but you may only pick one (two with Raider's first ability). After choosing an item, the remaining items disappear, and all the item slots will be empty, as the room is cleared.

Appearance
The Vault has a gray color scheme, with metal gray walls and a metal gray floor. The items are placed on a metal table. If the Vault replaces a special room, the red button is located to the right of the table and there is no board to display information.

Music
The music that plays in the Vault (only if it replaces a Special Room) is A Shellin the Pit - Trilobyte.

Trivia

 * The Final Shop and the Library are the only Special Room to have guaranteed items purchasable for free.
 * Killing the Shopkeeper does not affect the price of items on sale.
 * Happy Hour works on any Special Room, but does not reduce the cost in Altars or in the Wrath Shop.