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: Stronghold (Click to make permanent). or choose:
Starting Area: 
Square, 20 x 20ft.; door on two walls, passage on third wall, secret door on fourth wall
Description
Noises: Knocking
Air: Clear, with mist covering floor
Odors: Earthy
Purpose: Banquet room for hosting celebrations and guests
Current state: Furniture wrecked but still present
Contents: Random Trap protecting treasure found in a small secret room
Possible feature: Sticks; Damp ceiling; Teeth or fangs, scattered
Possible furnishings: Stand; Tun (huge cask, 250 gallons); Cushion
(Religious) Possible furnishings: Shrine; Brazier, Incense burner
(Mage) Possible furnishings: Brazier; Pipes, musical; Vestments
Possible personal items: Dish; Knucklebones or dice; Spigot
Passages
Passage Width: 
30 ft. / Leads to: 
Stairs (if not multi-level then reroll)
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: Diagonal passage to the left for 30 ft (or straight then turn left)3rd Passage Width:
10 ft. / Leads to: 
Chamber4th Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., comes to a dead end; 10 percent chance of a secret door
Doors
Door: Stone / Leads to: Stairs (if not multi-level then reroll)
Extra doors (if necessary):
Door 2: Wooden, barred or locked / Leads to: 
Passage 20 ft. straight ahead
Door 3: Iron / Leads to: Chamber
Door 4: Portcullis, locked in place / Leads to: Chamber
Door 5: Wooden / 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, 50 x 80 ft.
Number of exits: 6
Exit locations: Same wall as entrance / Wall opposite entrance / Wall left of entrance / Wall right of entrance / Wall left of entrance / Wall opposite entrance /
Exit types: Corridor, 10ft. long / Door / Door / Door / Door / Door /
Description
Purpose: Sitting room for family and intimate guests
Current state: Rubble, ceiling partially collapsed
Contents: Random Trap protecting treasure found in a small secret room
Possible feature: Damp ceiling; Cracks, floor; Dung
Possible furnishings: Bunks; Candelabrum; Fireplace and wood
(Religious) Possible furnishings: Gong; Tripod, Incense burner
(Mage) Possible furnishings: Vestments; Tripod; Screen
Possible personal items: Basket; Knife; Flask or jar
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: Down one level to a chamber
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Powder
Book, Scroll, or Tome: Letter
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Slay a rival
Personality: Rabble; poorly trained and easily rattled.
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: Antilife aura with a radius of 1d10 x 10ft.; while in the aura, living creatures can't regain hit points
Random Traps
Trigger: Stepped on (floor, stairs)
Severity: Setback (DC 11, +3 to-hit)
Effect: Fire shoots out from wall, floor, or object
| Damage | |
|---|---|
| Level 1-4: | 1d10 |
| Level 5-10: | 2d10 |
| Level 11-16: | 4d10 |
| Level 17-20: | 10d10 |
Random Tricks
Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.
Object: Fresco
Effect: Releases, summons, or turns into a monster
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Their contribution stands as a beacon of hope for all adventurers!
