The Abyss

The Abyss, the hardest World that the player needs to conquer and get all of its rewards. 
== Entering the Ä̴͈̮͉͖̱́̀̊͠ͅͅb̶̹̜̰̻̘̯̒̊͘͝y̴̦̒̕ͅs̵̢͕͉̘̖̫̣̄̑͜s̶̡̹͕͈̪̝̾͆ ==
To enter the Abyss, the player must create w̷͙̖ͧa̮̫̪̖̮̗͔ͬͥͧ̀ͅt̨̺̤̗͉͈̭̣̉e̴͙͇̫̹͕̥̤̯̿͆r̘͕̹̖̬̤̃͞ by adding brown mushroom in a cauldron and then using vial to obtain it. Go to the house in Town and talk to Cat (The Endless) while holding the w̷͙̖ͧa̮̫̪̖̮̗͔ͬͥͧ̀ͅt̨̺̤̗͉͈̭̣̉e̴͙͇̫̹͕̥̤̯̿͆r̘͕̹̖̬̤̃͞ out. You will get a notification to enter the Abyss.
 
== Within the Ä̴͈̮͉͖̱́̀̊͠ͅͅb̶̹̜̰̻̘̯̒̊͘͝y̴̦̒̕ͅs̵̢͕͉̘̖̫̣̄̑͜s̶̡̹͕͈̪̝̾͆ ==
You find yourself in a teleporter that lets you return to Earth World. In the room you are is green Spirit King, also known as Eldrin.
The Abyss is a chaotic maze that randomly constructs itself every 15 minutes with the following elements: 
* Spawn Point
* Long Hallway
* Long Pillar Hallway
* Blue Mushrooms Room
* 4 Pillars Room
* 2 Giant Pillars Room
* Coffins Room
* Staircase
* Wall Teleporter
* Library
* Praying Room
* Green Library
* Crossroad
* Summon Circle Crossroad
* Cat Teleporter Room
* Angel Statue
* Gallery Room
Special Elements accessed through Gray Gates:
* White Flame Teleporter Room
* Shape Puzzle Room
Some of these elements have specific use. Using the White Flame Teleporter will give you the Abyss Explorer Badge. 
Opening an Abyss Chest will give you the Abyss Chest Badge, Moon Coins/Abyss Speed Potion (15 in total) and a small chance for Chest Fragment (1 in total). Abyss Chests spawn in Library and Blue Mushroom Rooms.
Praying Rooms have the praying platform that can be used. If the pray is successful, you are given Moon Coins, Souls and small chance for Pray Fragment (2 in total), then the praying platform can be used again after 180 seconds. If the praying fails, the player is rejected by the Ä̴͈̮͉͖̱́̀̊͠ͅͅb̶̹̜̰̻̘̯̒̊͘͝y̴̦̒̕ͅs̵̢͕͉̘̖̫̣̄̑͜s̶̡̹͕͈̪̝̾͆ and killed instantly and the Praying Room becomes a 4 Pillar Room while a random 4 Pillar Room becomes a Praying Room.
The Shape Puzzle Room has the same concept as the Lunar Ruins. Complete the puzzle to get the Shape Fragment (1 in total).
Getting all 4 Fragments will reward you with the Abyss Fragments Badge.
Gallery Room naturally shows the portraits of different players above the "Member" rank and those within top 5 on leaderboards. There is a chance to find a Corrupted Gallery Room, with the only difference that it has a teleporter instead of a portrait in the main picture. Using the teleporter you will teleport to G̶͉̲̲̐̔̅̀ͅa̷̪̯̩̤̎͌͠͝ḷ̴̜̦͕̽̉̄̐ḻ̴͊̏ë̶̙̜̳̕ṛ̵̱̘̐͋̕y̴̝̓.
Green Library has the Tome that the player can grab. Give it back to Eldrin and be rewarded with Starlight Essence.
In 4 Pillar Room there is a chance for Celestara to spawn. Answer his riddles and be rewarded with Cosmic Essence.
Coffins Room is where the Corrupted Scythe spawns with 0.16% chance at the beginning of every Ä̴͈̮͉͖̱́̀̊͠ͅͅb̶̹̜̰̻̘̯̒̊͘͝y̴̦̒̕ͅs̵̢͕͉̘̖̫̣̄̑͜s̶̡̹͕͈̪̝̾͆ that is created.
You will be awarded with a badge after obtaining the Corrupted Scythe.
== Trivia ==
After using the White Flame Teleporter, the player gets teleported to a Cat Teleporter Room. If the Abyss doesn't have any Cat Teleporter Room, the player is teleported to Spawn Point.
The Abyss can have multiple Floors via Staircases. The highest recorded floor level is 8.
Summon Circles are used by players to summon other players and regroup within the Abyss.
On the left wall of the Spawn Room there is a text "The Elysian Fields Hotel". Upon interacting with it, a weird message appears. It's use is currently unknown.