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

Dungeon Type: Tomb (Click to make permanent). or choose:

Starting Area: Passage, 10 ft. wide; T intersection

Noises: Moaning
Air: Clear and damp
Odors: Dank or moldy

Purpose: Guardroom, usually guarded by undead, constructs, or other creatures that don't need to eat or sleep
Current state: Rubble, ceiling partially collapsed
Contents: Monster (pet or allied creature)

Possible feature: Slime (harmless); Bones; Mold (common)
Possible furnishings: Brazier and charcoal; Couch; Pegs
(Religious) Possible furnishings: Candles; Drum, Columns or pillars
(Mage) Possible furnishings: Lectern; Kneeling bench; Shrine
Possible personal items: Ear spoon; Wool; Statuette or figurine


Passage Width: 20 ft. / Leads to: Continue straight 20ft., then the passage turns right and continues 10ft.

Extra passages (if necessary):

2nd Passage Width: 10 ft. / Leads to: Continue straight 30ft., no doors or side passages

3rd Passage Width: 30 ft. / Leads to: Continue straight 20ft., side passage to the right, then an additional 10 ft. ahead

4th Passage Width: 10 ft. / Leads to: Chamber


Door: Stone / Leads to: Stairs (if not multi-level then reroll)

Extra doors (if necessary):
Door 2: Portcullis / Leads to: Chamber
Door 3: Secret door, barred or locked / Leads to: Passage 20 ft. straight ahead
Door 4: Wooden / Leads to: Passage 20 ft. straight ahead
Door 5: Iron / Leads to: Chamber
Door 6: Wooden, barred or locked / 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: 3
Exit locations: Same wall as entrance / Same wall as entrance / Wall opposite entrance /
Exit types: Corridor, 10ft. long / Door / Door /

Purpose: Crypt for less important burials
Current state: Furniture wrecked but still present
Contents: Monster (pet or allied creature)

Possible feature: Dampness, wall; Cobwebs; Arrow, broken
Possible furnishings: Bucket; Chair, padded, or divan; Buffet cabinet
(Religious) Possible furnishings: Font; Idol, Thurible
(Mage) Possible furnishings: Holy or unholy writings; Pews; Statue
Possible personal items: Washcloth; Vase; Yarn


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: Chimney up two levels to a passage 20ft. long


Whenever a container or book is generated, use this to determine its contents

Container Contents: Oil
Book, Scroll, or Tome: Map or atlas


Each monster should have a motivation in the dungeon. Sometimes this might make them peaceful (even if temporarily).

Motivation: Slay a rival

Random Hazards

Hazard: Shrieker

Random Obstacles

Obstacles block or hamper progress and can affect more than one room.

Obstacle: Overgrown mushrooms block progress and must be hacked down (25 percent chance of a mold or fungus dungeon hazard hidden among them)

Random Traps

Trigger: Moved through (doorway, hallway)
Severity: Dangerous
Effect: Brittle stairs collapse over spikes

Random Tricks

Tricks are quirky and less deadly than a trap. Some tricks are permanent, others can be dispelled with Dispel Magic.

Object: Statue
Effect: Changes one substance to another, such as gold to lead or metal to brittle crystal

This website exists thanks to the contribution of patrons on Patreon. If you find these tools helpful, please consider supporting this site. Even just disabling your adblocker will help (it's only text and plain image ads I promise). Becoming a patron will upgrade your account to premium, giving you no ads and more features.

Shout outs: Stacey, John Nazario, Cory Brooks, RaspySCREAMS, Gary, Gordon Alexander Fallon, Sunscryer, and Max Puplett.
Their contribution stands as a beacon of hope for all adventurers!

Become a patron
[-] Login▾

Make campaigns and save encounters / combats / dice rolls and more. One step!



Recovery Email (Optional):

Gift Premium