Random locations

Random dungeons are new type of content introduced in Underrail version 1.1.1.0.

Mechanics

Random dungeons appear in low level areas to spice up the early game on successive playthroughs.

They do not pop up and later disappear like random events do. They either are there from the beginning of a playthrough, integrated and continuous with the static map, or they are not. All playthroughs will have some random dungeons, but usually not all of them. Random dungeons can also be chained so that one random dungeon leads into another.

They should be as indistinguishable from regular areas as possible: A random dungeon will modify one or more zones by adding a small world fragment into the zone that serves as the dungeon's entrance. Usually, any entrance fragment can lead to any random dungeon of matching type (eg. a trapdoor will connect to a ladder, west transition will connect to east transition) but some random dungeons have pre-defined locations.

In addition to random loot like in static areas, random dungeons have randomized entrances and other varying random factors.

Dungeon zones

Base zones for random dungeons. The contents of these zones are randomized to varying degrees.

• Low level bunker 1 is a small bunker.
• Low level bunker 2 is a three-floor robot facility.
• Low level bunker 3
• Low level bunker 4
• Low level cave 1 is a fairly large, but possibly partially blocked, cave.
• Low level cave 2 is a small two-level cave that may lead to other random dungeons.
• Low level cave 3
• Low level cave 4
• Lower Passages (Random dungeon)
• Water Treatment Facility is a fairly large and complex two-floor facility that's always in the same place (Junkyard tunnels) if it appears. It also has a random quest tied to it, Mushroom Cove scavenger.
• Core City Office Building
• Jet Eater Lair ^E

Dungeon fragments

Fragments are small changes added to existing static zones. They usually serve as random dungeon entrances, or other points of interests in quests related to random dungeons.

In Lower Caves:

• South Gate Outposts, northwest outpost (bunker passage entrance)^HD
• South Gate Outposts, east outpost (cave passage entrance)
• Crossroad Caves, area 3 (trapdoor/ladder entrance)
• Crossroad Caves, area 5 (cave passage entrance)
• Mushroom Cove Base (bunker passage entrance)
• Mushroom Cove Base (cave passage entrance)
• Lower Caves, Junkyard tunnels 1 and 4 (Water Treatment Facility peekhole and entrance)

In Lower Passages:

• Lower Passages (Random dungeon)

In Core City:

• Upper level, leading to Core City Office Building
• Sewers (2 potential random dungeons, not yet in-game?)^Verify

In Waterways: ^Expedition

• Drag 'n' Drop
• Jet Eater Lair
• Core City Sewer Exit, a boat

In Random dungeons:

• Low level cave 2 random dungeon, random entrance leading into another low level cave/bunker random dungeon.

Map gallery

Dungeon interiors

Maps of random dungeon zones. Note that parts of the dungeon layouts, such as entrances and which areas are blocked or damaged, can be randomized.

• 

  Low level bunker 1

• 

  Low level bunker 2 bottom floor

• 

  Low level bunker 2 middle floor

• 

  Low level bunker 2 top floor

• 

  Low level cave 1

• 

  Low level cave 2 upper floor

• 

  Low level cave 2 lower floor

• 

  Water Treatment Facility upper floor

• 

  Water Treatment Facility lower floor

• 

  Water Treatment Facility upper floor ventilation

• 

  Water Treatment Facility lower floor ventilation

Fragments

Random dungeons add small fragments to otherwise static areas, usually to serve as their entrance point. Normal areas included for comparison.

• 

  South Gate Outposts 3 normal

• ForlornStations3 frag frlstat3.png

  South Gate Outposts 3 with random dungeon entrance fragment

• 

  South Gate Outposts 4 normal

• 

  South Gate Outposts 4 with random dungeon entrance fragment

• 

  Crossroad Caves 3 normal

• CrossroadCaves3 frag xcaves3d.png

  Crossroad Caves 3 with random dungeon entrance fragment

• 

  Crossroad Caves 5 normal

• 

  Crossroad Caves 5 with random dungeon entrance fragment

• 

  Mushroom Cove Base normal

• MushroomCoveBase frag mushcb1.png

  Mushroom Cove Base with random dungeon entrance fragment 1

• MushroomCoveBase frag mushcb2.png

  Mushroom Cove Base with random dungeon entrance fragment 2

• 

  Junkyard tunnels 4 normal

• 

  Junkyard tunnels 4 with Water Treatment Facility entrance fragment

• 

  Junkyard tunnels 1 normal

• 

  Junkyard tunnels 1 with Water Treatment Facility entrance fragment

History

• 1.1.2.0: added more random dungeons
• 1.1.1.6: Fixed the bug that caused some of the random dungeons to never trigger due to a bug with difficulty restriction
• 1.1.1.5: Fixed yet another reason why a certain early-game dungeon wasn't appearing (fixed Water Treatment Facility entrance fragment)
• 1.1.1.0: introduced random dungeons