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 random). or choose:
Starting Area: 
Square, 20 x 20ft.; door on two walls, passage in third wall
Description
Noises: Tapping
Air: Clear and damp
Odors: Sulfurous
Purpose: Throne room where the lair's leaders hold court
Current state: Pool of water; chamber's original contents are water damaged
Contents: Random Trick
Possible feature: Wood pieces, rotting; Pottery shards; Cracks, ceiling
Possible furnishings: Couch; Quilt; Loom
(Religious) Possible furnishings: Chimes; Statue, Idol
(Mage) Possible furnishings: Pipes, musical; Shrine; Cassocks
Possible personal items: Horn, drinking; Wool; Washcloth
Passages
Passage Width: 
10 ft. / Leads to: 
Continue straight 20ft., door to the left, then an additional 10 ft. ahead
Extra passages (if necessary):
2nd Passage Width:
10 ft. / Leads to: 
Chamber3rd Passage Width:
5 ft. / Leads to: 
Continue straight 20ft., side passage to the left, then an additional lO ft. ahead4th Passage Width:
10 ft. / Leads to: 
Continue straight 20ft., then the passage turns left and continues 10 ft.
Doors
Door: Secret door, barred or locked / Leads to: Chamber
Extra doors (if necessary):
Door 2: Wooden, barred or locked / Leads to: False door with trap
Door 3: Wooden / Leads to: Chamber
Door 4: Wooden / Leads to: Chamber
Door 5: Wooden / Leads to: Chamber
Door 6: Stone, barred or locked / 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: 
Square, 20 x 20 ft.
Number of exits: 3
Exit locations: Same wall as entrance / Wall right of entrance / Wall left of entrance /
Exit types: Corridor, 10ft. long / Corridor, 10ft. long / Corridor, 10ft. long /
Description
Purpose: Banquet room for important celebrations
Current state: Used as a campsite
Contents: Monster (pet or allied creature)
Possible feature: Hammer head, cracked; Dripping blood; Leather boot
Possible furnishings: Pegs; Chair, padded, or divan; Chair, plain
(Religious) Possible furnishings: Vestments; Brazier, Screen
(Mage) Possible furnishings: Vestments; Robes; Idol
Possible personal items: Tinderbox (with flint and steel); Brush; Coffer
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 passage 20ft. long
Contents
Whenever a container or book is generated, use this to determine its contents
Container Contents: Semiliquid suspension
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: Seek an item in the dungeon
Personality: Greedy; wants treasure.
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: Blade barrier blocks passage
Random Traps
Trigger: Opened (door, treasure chest)
Severity: Setback (DC 11, +5 to-hit)
Effect: Magic missiles shoot from a statue 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: Cracked gem
Effect: Asks three skill-testing questions (if all three are answered correctly, a reward appears)
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Their contribution stands as a beacon of hope for all adventurers!
