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: Temple or shrine (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: Footsteps ahead
Air: Clear and damp
Odors: Manure
Purpose: Central temple built to accommodate rituals
Current state: Stripped bare
Contents: Monster (pet or allied creature)
Possible feature: Dripping blood; Sticks; Cobwebs
Possible furnishings: Butt (huge cask, 125 gallons); Rug (small or medium); Bunks
(Religious) Possible furnishings: Candles; Altar, Pipes, musical
(Mage) Possible furnishings: Offertory container; Altar; Holy or unholy symbol
Possible personal items: Lamp or lantern; Bottle; Cane or walking stick
Passages
Passage Width: 
20 ft. / Leads to: 
Continue straight 20ft., then the passage turns left and continues 10 ft.
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Chamber3rd Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns right and continues 10ft.4th 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: False door with trap
Extra doors (if necessary):
Door 2: Secret door / Leads to: 
Stairs (if not multi-level then reroll)
Door 3: Stone, barred or locked / Leads to: Chamber
Door 4: Wooden / Leads to: Chamber
Door 5: Wooden / Leads to: 
Passage 20 ft. straight ahead
Door 6: Wooden / Leads to: Passage 20 ft. straight ahead
Chamber (Rooms)
Whenever a passage, door, or anything else results in a chamber, use one of these.
Dimensions: 
Trapezoid, roughly 40 x 60 ft.
Number of exits: 2
Exit locations: Wall left of entrance / Wall opposite entrance /
Exit types: Corridor, 10ft. long / Corridor, 10ft. long /
Description
Purpose: Central temple built to accommodate rituals
Current state: Pristine and in original state
Contents: Monster (random creature) guarding treasure found in a loose stone
Possible feature: Dust; Dust; Water, large puddle
Possible furnishings: Stool, normal; Rug (small or medium); Table, trestle
(Religious) Possible furnishings: Tripod; Whistle, Holy or unholy writings
(Mage) Possible furnishings: Screen; Pipes, musical; Whistle
Possible personal items: Towel; Food; Tinderbox (with flint and steel)
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: Cinders
Book, Scroll, or Tome: Travelogue for an exotic land
Monster
Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).
Motivation: Slay a rival
Personality: Brave; stands its ground.
Random Hazards
Hazard: Spiderwebs (DC 12 Dex or restrained. DC 12 Athletics or Acrobatics to escape. AC 10, 15 HP, fire vulnerability, immunity to bludgeoning / piercing / psychic)
Random Obstacles
Obstacles block or hamper progress and can affect more than one room.
Obstacle: Chasm 1d4 x 10 ft. wide and 2d6 x 10ft. deep, possibly connected to other levels of the dungeon
Random Traps
Trigger: Moved through (doorway, hallway)
Severity: Dangerous (DC 12, +7 to-hit)
Effect: Thunderwave knocks characters into a pit or spikes
| 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: Tapestry or rug
Effect: Casts polymorph on the characters (lasts 1 hour)
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Their contribution stands as a beacon of hope for all adventurers!
