Random Dungeon Generator
Looking for a full map? Try the Dungeon Map Generator
Randomly generate parts of a dungeon on the fly, pieces are modular and fit together so you can even generate an entire dungeon this way. If you're generating from scratch, begin with a starting area and then add random doors and passages. Passages can connect to other passages, and should continue to be generated until they're all linked to doors, rooms, or dead-ends. Refresh to generate new things. You can also drag and drop pieces onto the grid map to build as you go.
Jump to a section:
- Dungeon Start
- Passages
- Doors
- Chamber (Rooms)
- Stairs
- Contents
- Monster
- Random Hazards
- Random Obstacles
- Random Traps
- Random Tricks
Dungeon Start
Dungeon Type: Lair (Click to make permanent). or choose:
Starting Area: 
Rectangle, 80 x 20ft., with row of pillars down the middle; two passages leading from each long wall, doors on each short wall
Description
Noises: Chanting
Air: Clear, with smoke covering ceiling
Odors: Dank or moldy
Purpose: Chapel where the lair's inhabitants worship
Current state: Holes, floor partially collapsed
Contents: Random Trap
Possible feature: Wood pieces, rotting; Cracks, wall; Cobwebs
Possible furnishings: Couch; Table, round; Table, large
(Religious) Possible furnishings: Altar; Altar, Gong
(Mage) Possible furnishings: Pews; Candles; Brazier
Possible personal items: Razor; Pipe, musical; Wig
Passages
Passage Width: 
40ft. wide, 20ft. high, gallery 10ft. above floor allows access to level above / Leads to: 
Continue straight 20ft., door to the right, then an additional 10 ft. ahead
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns right and continues 10ft.3rd Passage Width:
10 ft. / Leads to: 
Chamber4th Passage Width:
5 ft. / Leads to: Continue straight 20ft., then the passage turns right and continues 10ft.
Doors
Door: Wooden / Leads to: 
Stairs (if not multi-level then reroll)
Extra doors (if necessary):
Door 2: Wooden / Leads to: False door with trap
Door 3: Wooden / Leads to: Chamber
Door 4: Iron, barred or locked / Leads to: 
Passage 20 ft. straight ahead
Door 5: Wooden / Leads to: Chamber
Door 6: Wooden / Leads to: Chamber
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Square, 30 x 30 ft.
Number of exits: 0
Exit locations:
Exit types:
Description
Purpose: Pen or prison where captives are held
Current state: Furniture wrecked but still present
Contents: Random Obstacle
Possible feature: Fungi (common); Stones, small; Cobwebs
Possible furnishings: Shrine; Screen; Butt (huge cask, 125 gallons)
(Religious) Possible furnishings: Holy or unholy symbol; Throne, Tripod
(Mage) Possible furnishings: Vestments; Incense burner; Idol
Possible personal items: Tray; Salve or unguent; Wig
Stairs
Stairs connect multiple floors of a dungeon. If your dungeon doesn't have multiple floors, then reroll the passage or door that spawned them.
Stair Type: Shaft (with or without elevator) up one level to a chamber and down one level to a chamber
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Husks
Book, Scroll, or Tome: Book of pressed flowers
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Conquer the dungeon
Personality: Greedy; wants treasure.
Random Hazards
Hazard: Violet fungus: This purplish mushroom uses root-like feelers growing from its base to creep across cavern floors. The four stalks protruding from a violet fungi's central mass are used to lash out at prey, rotting flesh with the slightest touch. Any creature killed by a violet fungus decomposes rapidly. A new violet fungus sprouts from the moldering corpse, growing to full size in 2d6 days.
Random Obstacles
Obstacles block or hamper progress and can affect more than one room.
Obstacle: Poisonous gas (deals 1d6 poison damage per minute of exposure)
Random Traps
Trigger: Moved through (doorway, hallway)
Severity: Dangerous (DC 12, +8 to-hit)
Effect: Door or other object is coated with contact poison
| Damage | |
|---|---|
| Level 1-4: | 2d10 |
| Level 5-10: | 4d10 |
| Level 11-16: | 10d10 |
| Level 17-20: | 18d10 |
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Cracked gem
Effect: Changes one substance to another, such as gold to lead or metal to brittle crystal
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Their contribution stands as a beacon of hope for all adventurers!
