Floor 4
Names: Floor 4fourth floorThe Iron TangleIron Tangle Rail SystemFourth LevelThe Tangle
First appears in Book 1: Dungeon Crawler Carl, chapter 4 (4)
Appearances
B1
B2
B3
B4
B5
B6
B7
B8
What you know
Book 1: Dungeon Crawler Carl
- Ch 4From the fourth floor, levels have random themes, are smaller, and their stairs are guarded by quests or bosses.
Book 2: Carl’s Doomsday Scenario
- Ch 12A hidden staircase to the fourth floor appears where Grimaldi's circus stood after the quest.
- Ch 15From the fourth floor, staff, tourists and managers get system protection: if they die, they are only kicked from the game.
Book 3: The Dungeon Anarchist’s Cookbook
- Ch 1The fourth floor, 'The Iron Tangle', is a vast subway-style rail system with 9,375 stairwells and ten days until collapse.
- Ch 1Stores and inns sit at stations; larger transfer stations link multiple lines, including subways and full-size trains.
- Ch 2Only 389,441 crawlers remain entering the fourth floor; several group quest events across the Over City killed hundreds of thousands.
- Ch 3On the fourth floor, stairwells only open six hours before collapse; nobody may descend early.
- Ch 4Mobs can't leave trains, so crawlers can kill them through open doors from the platform, though experience comes slowly.
- Ch 5The Tangle is a vast train system with many coloured lines; trains run in loops and a trip from stop 11 to 435 takes three days.
- Ch 30The Iron Tangle's named lines trace the Syndicate logo; the map represents the galaxy, with the abyss as its center.
- Ch 31The Iron Tangle announces self-destruct; stairwell portals open in 18 hours and stay open only six hours.
Book 8: A Parade of Horribles
- Ch 93A mysterious broadcast on every screen outside the center system shows a map of the Iron Tangle, apparently a tunnel node.
Connections
- includesRed Line
- containsRed Line
- containsYellow Line
- includesEmployee Break Room
- has memberGore-Goretrain engineer
- has memberMadison
- includesThe Iron Tangle Substation E
- has memberKravyad
- has memberRod
- includesInterdiction Rapid-Response Railway Repair Cart
- includesThe Abyss
- containsStation and Repair Hub E
Key moments
- Book 3 · Ch 31Iron Tangle self-destruct and Krakaren eruption
The Iron Tangle announces self-destruct; station floors open and Krakaren pour up from below, overrunning stations whose crawlers ignored Carl's warning.