The Iron Tangle

The Fourth Floor is called the Iron Tangle because it consists entirely of thousands of interconnected subway tunnels. Each tunnel has a color designation or unique name an has one or more trains running in a loop.

Train stations are located up and down the lines. At some stops mobs board or exit the train; some contain safe rooms. There are also transfer stations where crawlers can transfer to different lines.

When trains get to the end of the line they are portaled to either a train yard where they are readied for another loop or to the abyss - a giant pit where wreckage is discarded.

## Introductory Announcement

> *Hello Crawlers. Welcome to the fourth floor!*
>
>
> *We are so very excited to introduce you to what is being hailed a genius feat of engineering. We call it the Iron Tangle. The trick is to find the stairwells. There are a lot of them out there, but where? Let's see how many of you figure it out.*
>
>
> *This is important. This is not a permanent change, but it is a new rule for this level only.* *You may not go down early this level. The stairwells will open six hours prior to collapse, and that's it. Again, you may not go down early this floor. Now have fun out there. These train things are so nifty. We never had anything like it on our world.*
>
>
> *Patron bidding is active, and we are very happy with the results so far. You will get a notification when your bidding has concluded. We'll have more info on that later.*
>
>
> *You will notice that the leaderboard has finally populated. Congratulations to everybody on the list. As you can see, each member of the top 10 has a bounty after their names. That means hunting season is* open*! Isn't that exciting? If you kill one, you will receive a loot box containing the reward. If you are on the leaderboard, don't worry, you get to join in on the fun too. If you survive the floor, you will receive 10% of your own bounty upon floor collapse. That percentage goes up each floor.*
>
>
> *Finally, we'd like to address the especially high mortality rate of the third floor. This occurred due to a high instance of group quests gone bad. While the number of crawlers are still in the acceptable range, we are all concerned about early extinction. That does not mean we will be letting up. So quit sucking. It's as simple as that.*
>
>
>
> *Now get out there, ride the rails, and kill, kill, kill!*
>
>

## Named Trains

* *Nightmare Express* - A black steam engine with a large cowcatcher wedge in front. Comes every 90 minutes. Runs a figure-eight track in a loop with five stops: Transit to Yellow/Red #83, Transit to Mauve/Purple #283, Abyss #436, Transit to Green/Yellow #283, Transit to Tangerine/Plum #83)
* *Misery*
* *Dismemberment Limited* - A white monorail train with only two cars. Comes every 48 minutes. Has a war mage named Dismember aboard.
* *Eviscerator*
* *Raven Blade Unlimited*
* *Escape Velocity*
* *Homeward Bound* - Employee-only train that runs on employee line straight to stop #60

## Notable Colored Lines

* Red
* Yellow
* Orange
* Indigo
* Azure
* Brown
* Purple
* Mauve
* Green
* Tangerine
* Plum
* Winter Sky
* Ochre
* Fulvous
* Camel
* Cobalt
* Puce
* Vermillion
* Mango
* Sinopia
* Mindaro
* Grullo
* Zomp

## Navigating the Tangle

* **Stairwells** at 12, 24, 36, 48, and 72 on any colored line
* **Saferooms** at prime numbered transfer stations (11, 13, 17, etc.)
* **Exit-only Caverns** every five stations (15, 20, etc.) where monsters get Rev-Up Vitamin Shots
* **Desperado Club** at transfer stations ending with 1
* **Club** **Vanquisher** at transfer stations ending with 9
* **Trainyard** at 10
* **End of the Line** 435 (employees depart and portal to trainyard)

## Named Stations

* **Jikininki Peak** **Station** #12
* **Barren Station** #18
* **Employee Station** - All colored lines and *Homeward Bound* #60
* **Sirin** **Station -** Red Line #81 with Drek
* **Mora** **Station -** Red Line#82 with Psycho Sticker
* **Rusalka** **Station** - Red Line #84
* **Phantom Kangaroo** **Station** - Yellow Line #84 with Pollyslog
* **Mothman** **Station** - Yellow Line #88 with Skinned Mollie
* **Banshee** **Station** - Yellow Line #116 with Red Cornet
* **Terminus** **Station** #433 with Station Mimic
* **Abyss** **Station** #436