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: Mine (Click to make permanent). or choose:
Starting Area: 
Square, 20 x 20ft.; passage on each wall
Description
Noises: Tapping
Air: Clear but cold
Odors: Manure
Purpose: Lode where metal ore is mined (75 percent chance of being depleted)
Current state: Furniture wrecked but still present
Contents: Monster (random creature)
Possible feature: Slime (harmless); Cobwebs; Iron bar, bent and rusted
Possible furnishings: Couch; Rug (small or medium); Barrel (40 gallons)
(Religious) Possible furnishings: Incense burner; Vestments, Bells
(Mage) Possible furnishings: Brazier; Holy or unholy symbol; Prayer rug
Possible personal items: Cup; Thread; Brush
Passages
Passage Width: 
20 ft. / Leads to: 
Continue straight 20ft.; passage ends in a door
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns left and continues 10 ft.3rd Passage Width:
40ft., with pillars / Leads to: Continue straight 20ft.; passage ends in a door4th Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., side passage to the right, then an additional 10 ft. ahead
Doors
Door: Wooden / Leads to: 
Passage 20 ft. straight ahead
Extra doors (if necessary):
Door 2: Secret door / Leads to: Passage 20 ft. straight ahead
Door 3: Iron, barred or locked / Leads to: 
Chamber
Door 4: Wooden / Leads to: Chamber
Door 5: Portcullis / Leads to: Passage 20 ft. straight ahead
Door 6: Wooden / Leads to: Chamber
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Rectangle, 20 x 30 ft.
Number of exits: 3
Exit locations: Wall opposite entrance / Wall opposite entrance / Wall opposite entrance /
Exit types: Door / Corridor, 10ft. long / Corridor, 10ft. long /
Description
Purpose: Lode where metal ore is mined (75 percent chance of being depleted)
Current state: Used as a campsite
Contents: Random Trap
Possible feature: Dampness, wall; Wax blob (candle stub); Dung
Possible furnishings: Idol (large); Wall basin and font; Cask (40 gallons)
(Religious) Possible furnishings: Vestments; Lamp, Stand
(Mage) Possible furnishings: Shrine; Lectern; Lamp
Possible personal items: Washcloth; Needle(s); Statuette or figurine
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) down one level to a chamber
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Gelatin
Book, Scroll, or Tome: Map or atlas
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Avoid danger
Personality: Cowardly; looking to surrender.
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: Wall of fire blocks passage
Random Traps
Trigger: Moved through (doorway, hallway)
Severity: Deadly (DC 17, +10 to-hit)
Effect: Stone block smashes across hallway
| Damage | |
|---|---|
| Level 1-4: | 4d10 |
| Level 5-10: | 10d10 |
| Level 11-16: | 18d10 |
| Level 17-20: | 24d10 |
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Tapestry or rug
Effect: Creates a force field
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Their contribution stands as a beacon of hope for all adventurers!
