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Crystal Cavern

Last updated: Exalt Version (Feb 2024)
Crystal Cavern
Difficulty: 7.5Difficulty: 7.5Difficulty: 7.5Difficulty: 7.5Difficulty: 7.5Difficulty: 7.5Difficulty: 7.5Difficulty: 7.5
Teleportation Disabled
Dust Drops
Green Dust
Red Dust
Purple Dust

The Crystal Cavern is an extremely dangerous dungeon that is the second part of the Abandoned Mineshaft, with the Fungal Cavern being the first. This dungeon is one of the Exaltation dungeons, boosting Wisdom.

Like the first part, the dungeon is a source of Life Potions, assorted Greater Stat Potions, T14 Armor, and numerous untiered items. In addition, three pieces of the Crystal Kunoichi ST Set can drop here.

The portal drops from the Crystal Worm Mother, the boss of the Fungal Cavern, at a guaranteed rate.

This dungeon must be completed to earn ‘Conqueror of the Realm‘, ‘Hero of the Nexus’ and ‘Realm of the Mad Godfame bonuses.

The Realm Eye says:
Steamhammer’s Mining Co. began an ambitious operation to dig deeper beneath the realm than any humanoid had ever gone.
Surpassing even the depth of other subterranean manmade feats like the Toxic Sewers and Lost Halls, this enormous mineshaft extended nearly to Shaitan’s personal domain.
But Steamhammer’s gang pushed their luck and encountered an unexpected threat dwelling far beyond normal reach.
At first, the miners were able to make some amount of peace with the puzzling mushroom tribes. The dwarves were allowed to continue undisturbed and even engaged in some trade.
After a few weeks, the dwarves uncovered a chamber packed with more valuable ore than the entire realm had ever known to possess.
Eager to begin the haul, the dwarves started to chip away at the abundant crystals. But with a single strike of a pickaxe, the passive mushroom tribesmen were sent into a ravenous frenzy.
The miners were chased out of the cavern in a panic. Many were lost, and the survivors remained unsure of exactly what flipped a switch among the tribesmen.

The Crystal Cavern Guide is currently a work in progress.


Crystal Cavern Key The Crystal Cavern Key is unavailable for purchase and exists for testing purposes only.
Crystal Cavern Solo Key The Crystal Cavern Solo Key was available during Season 7 Swift Trials Speedrun Challenge by completing Swift Trials seasonal mission and during Horror STory II Tinkerer quest.



The dungeon is a sprawling network of caverns filled with dangerous enemies. Each room is a randomly chosen premade shape, but the layout is procedurally generated. Rooms contain dark purple floor tiles and irregular, light blue walls decorated with colorful crystals. Some rooms may contain wooden floor tiles with mining implements. Scattered throughout are stalagmites and various colored crystals serving as decorative objects. The boss room is a large, pentagon-shaped arena with a light blue, crystalline border, in a lake of impassable Crystallised Water.

Similar to the Fungal Cavern, the way to the boss is initially blocked off - players must find and destroy 25 Cavern Crystals in order to power up the Dwarf Miner’s drill and pave the way to the boss. There are always exactly 5 rooms in-between the starting room and the drill room (excluding both rooms).

There are more than 25 Cavern Crystals in total, meaning that it is optional to explore the whole dungeon; however, once the drill is activated and at least 1 person enters the boss room, all players within a certain radius will either be teleported to the boss room (right beneath the boss) to begin the fight or disconnected (if the player is standing on the bridge water when the bridge closes). Players do not need to be in the boss room to still be teleported to the boss, meaning they can sit in the drill room or a few rooms away and will still be teleported. However it is worth mentioning that the radius in which they will be teleported is not infinite, so they may still be left behind if they are more than 120 tiles away from the crystal entity. Additionally at least one player needs to be inside the boss room as the bridge closes or no one gets teleported and the boss fight fails.

Example Layout

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Crystal Entity Fight Crystal Entity Fight: Final Phase

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Crystal Bats

Crystal Slimes

Crystal Monsters


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Crystal Guardians

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Drops of Interest

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Daily Quests

The Crystal Cavern is part of the Epic Quest pool from the Tinkerer and has one associated quest. The Crystallized Epic Quest Chest, which is a reward for the quest, can drop items from both the Fungal and Crystal Caverns.

Name Description Items Needed Reward
The Crystal Defeat the Crystal Entity in the Crystal Cavern. Mark of the Crystal EntityMark of the Crystal EntityMark of the Crystal Entity Crystallized Epic Quest ChestLucky Clover

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Tips and Strategies

Due to the difficulty of the dungeon, organised runs via Discord are the main source of consistently completing the dungeon. A list of Discord servers that may run Fungal/Crystal Caverns can be found in the ‘RotMG Discord List’ server.

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  • The dungeon was released on Patch X.31.9.2 (Aug 2019), two weeks after the release of the Fungal Cavern.
  • Before Exalt Version (Dec 2022), this dungeon was the source for Vitality Stat Exaltation.

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