Dungeons consist of a network of rooms, containing various types of monsters based on the theme of the dungeon. The last room will contain one or more boss enemies, which may drop special items. These items may be considered as inferior, or extremely useful.

To reach a dungeon, it is necessary to kill certain enemies, which will randomly or systematically open the entrance to that dungeon. Any player can enter to fight the monsters inside, usually by clicking “Enter” or using the interact key when standing on an entrance.

Some dungeons have a multi-stage layout with portals connecting different stages. Details of these are described on the individual dungeon pages.

All portals stay open for 30 seconds before vanishing, except for the Locked Wine Cellar Portal which will remain for two minutes if not opened. An unlocked Wine Cellar portal remains open indefinitely.

Passing through the exit portal of most dungeons results in a completion statistic being counted on that player’s character. The Tunnel Rat fame bonus is awarded to characters that have completed all the requisite Tunnel Rat dungeons. These are indicated in the tables below. Not every dungeon tracks a completion stat - the dungeons that have no functioning counter are indicated with NC. Some dungeons have no completion/exit portal, these are indicated by NP.

Most dungeons have a player limit of 65 players. Attempting to enter a full dungeon will only result in a “Dungeon is full” message appearing in the chat. The exceptions to this limit are:

Realm Dungeons

Realm Event Dungeons

These dungeons drop from enemies which can spawn up to once per realm. With a few exceptions, they are generally more difficult than Realm Dungeons and include some of the hardest dungeons in the game. All of the dungeons listed below drop at a guaranteed rate.

Note that the enemies listed under “dropped” do not include seasonal reskins, which can be found here.

Name Portal Key Dropped Difficulty TR
Beachzone Beachzone Beachzone Key Beach Bum 1 NP
Davy Jones’ Locker Davy Jones' Locker
Davy's Key Ghost Ship 4 N
Mountain Temple Mountain Temple Mountain Temple Key Jade Statue Garnet Statue 4 N
Lair of Draconis Lair of Draconis Draconis Key Rock Dragon 5 N
Deadwater Docks Deadwater Docks Deadwater Docks Key Crystal Prisoner 5 N
Woodland Labyrinth Woodland Labyrinth Woodland Labyrinth Key Lucky Ent God 5 N
The Crawling Depths The Crawling Depths The Crawling Depths Key Lucky Djinn 5 N
Ocean Trench Ocean Trench Ocean Trench Key Hermit God 5 Y
Ice Cave Ice Cave Portal Ice Cave Key Lord of the Lost Lands 5 N
Tomb of the Ancients Tomb of the Ancients Tomb of the Ancients Key Grand Sphinx 5 Y
Fungal Cavern Fungal Cavern Portal Fungal Cavern Key Crystal Worm Father 5 N
Crystal Cavern Crystal Cavern Portal Crystal Cavern Key Crystal Worm Mother 5 N
The Nest The Nest Portal The Nest Key Killer Bee Nest 5 N
The Shatters The Shatters Shatters Key Avatar of the Forgotten King 5 N
Lost Halls Lost Halls Lost Halls Key Lost Sentry 5 N
Cultist Hideout Cultist HideoutCultist Hideout None Agonized Titan
(portal opens after being defeated)
5 N
The Void The Void None Marble Colossus
Must use Vial of Pure Darkness to open
5 N


Wormholes are portals to four alien worlds. None of these are required for the Tunnel Rat fame bonus.

Once the Alien UFO is defeated, Commander Calbrik orders his soldiers to retreat and leave a malfunctioning wormhole generator behind. Several wormholes subsequently appear across the realm, and are visible on the minimap as colored dots. Each wormhole is guarded by a small party of enemies from the dungeon.

Wormhole keys can only be used in the Vault and Guild Hall.

Name Portal Key Difficulty TR
Malogia Malogia Malogia Key 5 NC
Untaris Untaris Untaris Key 5 NC
Forax Forax Forax Key 5 NC
Katalund Katalund Katalund Key 5 NC

Oryx’s Castle

Two minutes after the realm closes, all players within the realm (not in dungeons) will be transported to Oryx’s Castle, which consists of multiple areas. None of these are required for the Tunnel Rat fame bonus.

Name Portal Dropped Difficulty TR
Oryx’s Castle No portal Automatically transported into it 2 minutes after realm closes 4 NC
Oryx’s Chamber Oryx's Chamber Stone Guardians Stone Guardians
Guaranteed drop
5 NC
Wine Cellar Wine Cellar Wine Cellar Oryx the Mad God
Locked portal is a guaranteed drop
Must be opened with a Wine Cellar Incantation
5 NC
Court of Oryx Court of Oryx Oryx the Mad God
Guaranteed drop
- NC

Mini Dungeons

Mini dungeons are accessible from Court of Oryx by defeating Janus the Doorwarden in Oryx Castle. None are required for the Tunnel Rat fame bonus.

Heroic Dungeons

These dungeons are a more difficult version of the boss room of their non-heroic counterparts, although they do provide better rewards in compensation. All heroic dungeons do not allow pets. None of these are required for the Tunnel Rat fame bonus.

Both heroic dungeons used to have a chance of dropping from the bosses of the respective non-heroic dungeon (Septavius the Ghost God and Archdemon Malphas) but they currently do not drop, meaning they are only accessible from keys. However, the keys are not currently sold in the Nexus. These dungeons are typically only accessible during special events.

Name Portal Key Dropped Difficulty TR
Heroic Undead Lair Heroic Undead Lair Heroic Undead Lair Incantation None 5 NC
Heroic Abyss of Demons Heroic Abyss of Demons Heroic Abyss of Demons Key None 5 NC

Special Event Dungeons

Special Event Dungeons are dungeons whose portals will drop from enemies and keys obtainable only during seasonal events. The exception is Belladonna’s Garden, whose key is always available for purchase in the Nexus.

None of these dungeons are required for Tunnel Rat.

Name Portal Key Dropped Difficulty Available TR
Battle for the Nexus Battle for the Nexus Battle Nexus Key None 5 Sep 2013; Occasional mystery boxes N
Belladonna’s Garden Belladonna's Garden Bella's Key None 4 Player Appreciation Event Feb 2014; Valentine’s Day since 2017 N
Ice Tomb Ice Tomb Ice Tomb Key Permafrost Lord 5 Christmas/Winter Events since 2016 NC
Rainbow Road Rainbow Road Rainbow Road Key Leprechaun
Guaranteed drop
1 St. Patrick’s Day Events since 2017 NP
Santa’s Workshop Santa's Workshop Santa's Workshop Key None 1 Christmas (Oryxmas) Events since 2017 NC
Mad God Mayhem Mad God Mayhem Mad God Mayhem Key Spirit of Oryx
Guaranteed drop
N/A Month of the Mad God Events since 2018 NC

Other Dungeons

These dungeons are neither dropped by enemies nor opened by keys. None are required for Tunnel Rat.

Name Portal Found Difficulty TR
Tutorial Tutorial Spawn point for new players, and also can be accessed directly by /tutorial command 0 NC
Oryx’s Kitchen Oryx's Kitchen The third stage of the tutorial, can be accessed indirectly via /tutorial or /nexustutorial commands 0 NC
The Arena The Arena Northwest area of Nexus, accessed by paying a fame or gold cost Rises each wave NP


  • Dungeons were added to the game in Build 74, representing the largest addition of content to the game since the extra Classes were first introduced.
  • When the first dungeons were added, monsters dropped Dungeon Keys, which were then used to open the portal. This was changed in build 110, with the exception of the Beach Bum.
  • Since build 111, Keys are available in the Nexus for Realm Gold.
  • Prior to Release X.32.7.0, most dungeons had a loosely enforced player limit of 85 players. It was easy to bypass this limit if many players entered a portal at once, because the player counter took several seconds to update.